Smart corrosion-resistant coatings have attracted considerable attention due to their stimuli-response behavior, which is triggered by environment factors such as pH, metal ions, temperature, and moisture. However, the integration of multiple functional structural units into these coatings often presents challenges, limiting their practical applications. This study reports an acid-responsive, antibacterial, and anticorrosive bifunctional coating, synthesized by coupling polyacrylate with 2-aminobenzothiazole (ABT) through Schiff base (-CH=N - ) linkages. MMA (hard monomer) and BA (soft monomer) afford the polyacrylate excellent physical properties, with PHMA (functional monomer) providing aldehyde active sites for modification and intelligent responsiveness. The coating exhibits dual functionality, with both antibacterial and anticorrosion bproperties activated by the cleavage of -CH=N - bonds, resulting in the acid-responsive release of active molecules. The antibacterial performance, corrosion resistance, and their mechanisms of the coating were thoroughly investigated. The results reveal exceptional antibacterial efficiency of 99.99 % against E. coli and 99.45 % against S. aureus. Additionally, the impedance modulus of the ABT-incorporated coating at low frequency reaches 5.68 x 1010 Omega & sdot;cm2, three orders of magnitude higher than that of the control. This study demonstrates a promising strategy to achieve multifunctional smart coatings.

Abstract Photocured room-temperature phosphorescence (RTP) materials have considerable potential applications but are rarely reported. Here, we reported photocured RTP materials from naphthalimide, which simultaneously acts as RTP chromophore and photo-initiator. Specifically, naphthalimide generates radicals to polymerize acrylic acid and acrylamide upon UV irradiation. The resulting naphthalimide is tightly restricted in in-situ formed crosslinked matrix to achieve robust RTP (τp = 389.58 ms, φp = 17.83%, water and organic solvents resistance). Significantly, carboxyl can bind onto lone-pair electrons of tertiary amine in naphthalimide through proton transfer hydrogen-bonds (PTHBs), inhibiting nonradiative decay of S1 induced by photoinduced electron transfer (PET); increasing spin-orbit coupling (SOC) to promote intersystem crossing (ISC); cooperating with intermolecular hydrogen-bonds afford rigid microenvironment to stabilize triplet excitons. Moreover, afterglow colors are continuously tuned after loading different mass RhB via energy transfer. The as prepared materials are used as RTP inks for fabricating 3D printing and photopatterning for anti-counterfeiting and information encryption applications.

Lithium–oxygen batteries (LOBs) have been widely investigated as one of the next generations of potential energy storage devices due to their high theoretical energy density (3500 Wh kg −1 ), low cost, and small size. However, the performance of LOBs in practical applications is still not ideal. One of the vital bottlenecks is that the discharge product lithium peroxide (Li 2 O 2 ) is insoluble in organic electrolytes and self-insulation and cannot be completely decomposed during the charging process. In addition, the incompletely decomposed Li 2 O 2 blocks the electrode channel and covers the active site of the catalyst, eventually leading to fatal problems such as an increase in overpotential and a decrease in the cycle life of the battery. To solve the difficulties in the decomposition of Li 2 O 2 in LOBs, this work systematically reviewed the strategies for promoting Li 2 O 2 decomposition by developing a new electrolyte to improve the solubility of Li 2 O 2 , designing a new system or an efficient catalyst to boost the kinetics of the oxygen reduction/oxygen evolution reaction (ORR/OER), and regulating the morphology of the formed Li 2 O 2 . This review provides guidance and ideas for the design of a new generation of high-performance LOBs.

Tetracycline (TC) contamination in aquatic environments poses significant risks owing to antibiotic resistance gene dissemination and ecotoxicity. Integrating adsorption with photocatalysis offers a promising strategy for pre-concentrating contaminants at photocatalytic adsorbent surfaces while enabling solar-driven mineralization. Herein, a novel hierarchical mesoporous CeO2/TiO2 composite was constructed by transforming a Ti-based metal-organic framework, MIL-125-NH2 (NM), which serves as a highly efficient photocatalytic adsorbent for the treatment of high-concentration TC solutions. Remarkably, it delivered a high equilibrium adsorption capacity of 146.4 mg g-1 for TC within 240 min, significantly outperforming pristine NM by approximately 9.3 times. Moreover, its removal efficiency can further attain 93.1% for the high-concentration TC solutions (50 mg L-1) under simulated solar irradiation, and it remains above 80% after three successive cycles. The hierarchical porous structure enables a rapid TC preconcentration, while Ce-O-Ti heterointerfaces facilitate efficient charge separation and interfacial reactions. This work validates a facile MOF-templating approach for designing bifunctional composites that couple efficient adsorption with solar photocatalysis, offering significant potential for treating recalcitrant antibiotic pollutants in wastewater systems.

To resolve these dire environmental issues of today, it is imperative to develop highly effective and stable catalysts for the catalytic reduction of poisonous 4-nitrophenol (4-NP) to more useful and readily biodegradable 4-aminophenol (4-AP). Herein, we present a Cu2O nanoparticle-immobilized Ti-based metal–organic framework MIL-125-NH2 composite catalyst (Cu2O/NM), which was synthesized by facile coordination combined with an in situ reduction process. The Cu2O/NM catalyst has exhibited good catalytic performances in the reduction of 4-NP, with a rate constant of 3.524 min−1 and an activation energy (Ea) of 50.06 kJ mol−1, comparable to other reported Cu-based catalysts and even noble metal-based catalysts. The higher catalytic performance of Cu2O/NM can be ascribed to the high adsorption ability of NM and high effective electron transfer due to the Cu2+/Cu+ and Ti4+/Ti3+ redox couples (part of the Ti4+ in the NM was reduced to Ti3+ by NaBH4). Furthermore, it demonstrates exceptional recyclability and structural stability, highlighting its potential as an effective and durable catalyst for practical applications. Based on the composition, structure, and catalytic performance of Cu2O/NM, a plausible reaction mechanism is proposed. Therefore, this study presents a new paradigm for the fabrication of MOF-based composite catalysts with high catalytic activity and stability for the treatment of 4-NP-containing wastewater.

In this work, an efficient and stable catalyst composed of PdxCe1-xO2-delta solid-solution nanoparticles supported on porous TiO2 frameworks was developed, employing a two-step method comprising in situ etching of Ti-based metal-organic frameworks (MOFs) and subsequent calcination. During the synthetic process, the MOF-hydrolyzed TiO2 nanosheet networks served as structural scaffolds, efficiently maintaining the integrity of the basic architecture of the MOFs without distinct shrinking under calcination. Meanwhile, the introduced Pd species entered the CeO2 lattice on the surface, forming solid-solution nanoparticles that acted as stable active sites for CO oxidation. The resulting material possessed strong electronic interactions and an optimized reduction temperature, indicating that complete CO conversion could be achieved at 90 degrees C with a stable operation for 60 h at this temperature. We believe that this work not only offers a promising catalyst candidate for practical CO treatment but also shows a facile synthetic strategy for achieving MOF-derived highly active and stable hybrid catalysts.

Stimuli-responsive fluorescence materials are crucial in developing intelligent materials and have wide applications in anti-counterfeiting and information encryption. However, organic fluorescence dyes with strong π-π intermolecular interactions and dense molecular packing lead to inertia ability of stimuli-responsive. Here, we design and synthesize spacer group modified naphthalimide compounds (P1 and P2) with acidichromism and mechanochromism properties. Photoinduced electron transfer (PET) between naphthalimide and trimethylamine moieties quenches fluorescence of P1 and P2. Then, fluorescence is obtained when P1 and P2 interact with hydrochloric acid (named P1-HCl and P2-HCl). More importantly, the spacer group modified P1-HCl with a highly twisted conformation, preventing strong intermolecular π-π interactions and a compact packing structure, contributing to obvious mechanochromism, while P2-HCl does not. Our study provides a molecular strategy to investigate the relationship between molecular chemical structure and stimuli-responsive fluorescence properties and realizes anti-counterfeiting applications.

Organic dyes and drug-resistant bacteria are posing a potential threat to human health and ecology. Graphite phase carbon nitride (g-C3N4), because of its good light absorption performance, stability, and suitable energy band structure, has potential applications in photocatalysis. Herein, oxygen doped carbon nitride (O-CN) and MXene Ti3C(2) (TC) were physically mixed to form a heterojunction. The effect of the ratio between O-CN and TC on the photocatalytic performance was studied. Then O-CN/TC-2 was dispersed in PVA solution. Subsequently, the mixed solution was electrospinning into flexible nanofiber membranes POCNTC-2. POCNTC-2 composite nanofiber membranes were smooth and uniform, and the average diameter of the nanofiber was 390 +/- 2.7 nm. The maximum removal efficiency of the composite nanofiber membrane for MB solution (10 mg/L) reached 94.1% within 240 min. Meanwhile, it had favorable cycle stability. According to the bacteriostatic results, the maximum bacteriostatic zone diameters of POCNTC-2 8% against Escherichia coli and Staphylococcus aureus could reach 24 +/- 0.2 and 16 +/- 0.2 mm, respectively, and the bacteriostatic rates could reach 92% and 87%, respectively. Overall, the excellent photocatalytic removal of organic materials and antibacterial properties gave the flexible POCNTC membrane great application potential in the field of environmental purification.

Environment friendly ultralong room-temperature phosphorescence (RTP) materials with full-color tunability and stimuli-responsiveness are far-reaching but rarely reported. Here, sesbania galactomannan (SGM) is employed to afford abundant hydroxyl groups and water-solubility; various conjugation of arylboronic acids (BA) is easily anchored to SGM via B-O dehydration condensation reaction, contributing to full-color tunable and stimuli-responsive RTP materials. B-O chemical bonds and hydrogen bonds between BA and SGM provide a rigid environment to reduce nonradiative transitions and to stabilize triplet excitons, leading to yielded sample with phosphorescence lifetime of 1.35 s and phosphorescence quantum yield of 2.31 %. Importantly, RTP property of these materials are sensitive to water stimuli, because water can interfere B-O chemical bonds and hydrogen bonds and destroy the rigid environment in BA-SGM systems. Taking advantages of full-color tunable, water/heat stimuli-responsive and environmental friendly RTP performance, they are successfully applied in multi-functional inks for multilevel information encryption and anti-counterfeiting applications.

Overconsumption of non-renewable energy sources has caused the energy crisis and environmental pollution. Photocatalytic technology can utilize solar energy as a driving force for the energy conversion. Herein, 1-vinyl-3ethylimidazolium tetrafluoroborate (VEImBF4) and acrylic acid (AA) were used as monomers to prepare poly(1vinyl-3-ethylimidazolium tetrafluoroborate-co-acrylic acid/ oxidized carbon nitride) (P/P/O) by in situ radical copolymerization with oxygenated graphite carbon nitride (OCN). Specifically, the molecular structure, optical properties, photocatalytic removal of organic pollutants and photocatalytic bacterial inhibition were investigated for different P/P/O ratios. The results showed that P/P/O exhibited excellent light absorption and a high electron-hole separation rate. In addition, it also showed superior photocatalytic removal of MB ability with great cycle stability. Considering the effects of AA and OCN contents on the inhibition performance, P/P/O-2 exhibited the optimal bacteriostatic effect. It can effectively inhibit the growth of E. coli and S. aureus under visible light excitation, which showed the excellent synergistic inhibition performance. The diameters of the inhibition zone of P/P/O-2 on E. coli and S. aureus reached 21.49 mm and 22.36 mm, respectively. Meanwhile, the inhibition rate of P/P/O-2 on E. coli and S. aureus in 24 h reached 98.57 % and 98.59 %, respectively. Simultaneously, the minimum inhibitory concentration (MIC) for E. coli and S. aureus was 0.0469 mg/mL, at the same time, the inhibitory activity of P/P/O was concentration-dependent and broad-spectrum. Therefore, P/P/O with enhanced photocatalytic performance demonstrated its application potential in the field of photocatalytic bacteriostatic or self-cleaning.

Developing novel dressings with superior antibacterial properties to resist bacterial infections during wound healing remains a significant challenge. Hydrogels have emerged as prominent materials due to their excellent biocompatibility and adjustable functionality, and are widely applied in the field of wound therapy. However, the majority of hydrogels exhibit suboptimal mechanical properties, which hinder their practical application. In order to integrate dynamic function design and remarkable antibacterial activity, a dual-network (DN) hydrogel with multiple dynamic bonds was designed and constructed. Specifically, carboxymethyl chitosan (CMCS) and polyvinyl alcohol (PVA) were used as hydrogel matrix. Oxidized sodium alginate (OSA) and borax were utilized as crosslinking agents, resulting in the formation of Schiff base bonds and borate ester bonds with CMCS and PVA, respectively. Concurrently, berberine (BBR) was incorporated into the system to impart sustainable release properties and elevated antibacterial efficacy. The maximum antibacterial rates of the hydrogel against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) reached 97.1 % and 99.9 %, respectively, exhibiting remarkable synergistic antibacterial activity. Furthermore, the dynamic crosslinked DN hydrogel endowed it with exceptional mechanical properties, malleability, adhesion, self-healing, and self-adaptive ability, rendering it more efficacious in actual wound sites. Moreover, the hydrogel also exhibited favorable blood and cell biocompatibility, characterized by a hemolysis rate of less than 1 % and cell viability exceeding 90 %. Overall, the multifunctional hydrogel demonstrates considerable potential in addressing the challenges associated with infectious wound healing, thus indicating its candidacy as a promising wound dressing.

Graphitic carbon nitride (g-C3N4) has received much attention as a metal-free photocatalyst for dye degradation and sterilization. However, the low photocatalytic bactericidal activity and the difficulty in recycling have limited its applications. Here, oxidatively modified g-C3N4 grafted with polyethyleneimine (PEI) nanofiber membranes (PVA/PEI-OCN) was reported to enhance the photocatalytic activity. The modification by PEI grafting could reduce the recombination rate of photogenerated carriers and lead to more electrons for the photocatalytic reaction. In addition, electron spin resonance (ESR) results showed that the generation of reactive oxygen species ((OH)-O-center dot, (center dot)O2- and 1O2) were significantly enhanced in photocatalysis, leading to the significant enhancement of photocatalytic bactericidal activity and dye degradation. Furthermore, the PVA/PEI-OCN nanofiber membranes prepared by electrospinning had smooth surfaces and uniform fiber formation, with an average diameter of 380 +/- 60 nm. The tensile strength was about 73.5% higher than that of PVA nanofiber membranes. The inhibition diameter of PVA/PEI-OCN-4 against Escherichisa coli (E. coil) could reach 20 +/- 0.2 mm, and the maximum degradation efficiency of methylene blue solution (10 mg/L) could reach 92.8% within 120 min. This work provided an effective paradigm for the rational design of metal-free photocatalytic materials for elimination of bacterial and dye contamination. The PVA/PEI-OCN nanofiber membranes prepared by electrospinning had smooth surfaces and uniform fiber formation, with an average diameter of 380 +/-. 60 nm. The tensile strength was about 73.5% higher than that of PVA nanofiber membranes. The inhibition diameter of PVA/PEI-OCN-4 against E. coil could reach 20 +/- 0.2 mm, and the maximum degradation efficiency of MB solution (10 mg L-1) could reach 92.8% within 120 min. image

Spiropyran (SP) experiences isomerization from a colorless SP form to a colored merocyanine (MC) form and has received great attention due to its widespread use in optical printing materials and anti-counterfeiting. However, the isomerization mostly occurs in the solution state because of requiring free volume for the change in conformation of the SP molecule, which is hindered in the solid state. Here, we propose a molecular design strategy to link planar rigid carbazole (CZ) and naphthalene (NA) molecules with an SP molecule. Detailed photophysical property analysis and theoretical calculations suggest that the planar molecular conformation of the CZ and NA moieties contributes to a large free volume, promoting isomerization of SP under ultraviolet (UV) irradiation and mechanical grinding. The powder X-ray diffraction (XRD) pattern suggests that NA-SP has more loose intermolecular stacking than CZ-SP, leading to more efficient photo-isomerization. These results are beneficial to understand SP structures and the packing mode-to-stimuli responsive characteristic relationship. Consequently, by utilizing the efficient photochromic properties, we successfully demonstrate the application of CZ-SP and NA-SP as optical printing materials and anti-counterfeiting inks. Planar rigid carbazole and naphthalene-based spiropyran derivatives with efficient photochromism for optical printing materials.

With the increase of drug-resistant bacteria and the limitations of traditional antibacterial methods, photocatalytic inhibition has received widespread attention as a novel antibacterial method. In this paper, poly(1-vinyl-3-ethylimidazolium tetrafluoroborate) composite oxygenated carbon nitride (PBF-OCN) were prepared by in situ free radical polymerization using 1-vinyl-3-ethylimidazolium tetrafluoroborate and OCN. The results showed that the light absorption ability and electron hole separation rate of PBF-OCN were greatly improved compared with that of OCN, and the rate constant for photocatalytic removal MB of PBF-OCN-1 was about 1.39 times of that OCN. The growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) could be significantly inhibited by PBF-OCN under visible light, among which, the inhibition of PBF-OCN-3 was the most excellent, with the diameter of the circle of inhibition reaching 20.69 mm for E. coli, and 21.30 mm for S. aureus, and the inhibition rate against E. coli calculated by plate counting method reached 97.0%. The minimum inhibitory concentration for E. coli and S. aureus was 0.0625 mg/mL, respectively, and the possible inhibition mechanism of the samples was explored. The good synergistic antibacterial effect of PBF-OCN is expected to be applied in water treatment, antibacterial devices, packaging materials, and other fields. PBF-OCN was prepared byin situfree radical polymerization, which showed enhanced photocatalytic bacteriostatic and MB removal properties. The inhibition zone diameter of PBF-OCN against E. coli and S. aureus were more than 20mm, the inhibition rate exceeded 97%, and the MIC was 0.0625 mg/mL. The removal rate of MB by PBF-OCN reached 68.2%. image

The visible light catalytic antibacterial nanofiber membranes as a novel functional material were designed to solve the problem of bacterial infection and water pollution. In this work, oxygenated graphite carbon nitride nanosheets (O-g-C3N4) with 12% oxygen content were synthesized through thermal polycondensation followed by chemical oxidation. Exfoliation and dispersion of O-g-C3N4 were strongly enhanced compared to pristine g-C3N4 due to rich hydrophilic carboxyl and hydroxyl groups. The amount of ROS generated by O-g-C3N4 was about 13.8% more than that of g-C3N4. Then, the polyvinyl alcohol (PVA)/chitosan (CS)/O-g-C3N4 (PCO) composite nanofiber membranes were prepared by electrospinning. The contact angle of the PCO nanofiber membranes decreased from 55.0 degrees +/- 0.5 to 45.9 degrees +/- 0.2 along with the increased amount of O-g-C3N4, indicating the improvement of hydrophilicity. Meanwhile, the diameter of nanofibers increased from 148.0 +/- 22.9 nm to 244.0 +/- 52.3 nm with the loading ratio from 0% to 17%. The PCO nanofiber membranes exhibited significantly higher antibacterial activity compared to the blank nanofiber membranes and bare O-g-C3N4. The maximum diameter of the inhibition zone against Escherichia coli and Staphylococcus aureus could reach 26 +/- 0.1 mm and 16 +/- 0.2 mm, respectively. The inhibition rate against E. coli could reach 97% in 24 h under the irradiation of simulated sunlight. Based on reactive oxygen species (ROS) testing, zeta potential, and bacterial inhibition experiments, a possible synergistic mechanism was proposed. The electrostatic adsorption effect of PCO nanofiber membranes and ROS could effectively decompose the organic components of bacteria and destroy their structural integrity. The results indicated that the antibacterial PCO composite nanofiber membranes have wide application prospects in biomedical-related fields.

在工程教育认证背景下,以高分子化学课程为例,全面推进专业课程的思政建设,落实立德树人,从课程大纲修改、课程目标确定、教学设计到教学内容改革等方面开展课程思政.通过课程思政与高分子材料与工程专业人才培养、工程教育认证很好的融合,引导学生在专业课程知识获取的同时,树立科研生产安全观及全局观、树立社会主义核心价值观、坚定"四个自信"、加强环保意识、社会责任,实现专业课与思想政治教育的有机融合.

将聚乙烯醇(PVA)溶液与分散在其中的石墨氮化碳(g-C3N4)纳米片通过静电纺丝技术和交联反应成功地制备了具有增强抑菌性能的可生物降解复合纳米纤维膜.对PVA/g-C3N4(P-CN)复合纳米纤维膜的微观形貌、物理性能及抗菌性能进行了研究,分析了g-C3N4含量对复合纳米纤维膜的形貌及性能的影响.扫描电镜分析结果表明,P-CN纤维直径为200～300 nm,交联后纤维直径变为1μm左右,g-C3N4质量分数小于3％时,纳米片均匀地分布在纳米纤维的表面,通过拉伸和溶胀测试发现,交联复合纳米纤维膜具有良好的力学性能和优良的抗溶胀性能.抑菌测试结果表明,复合纳米纤维对大肠杆菌和金黄色葡萄球菌的抗菌效果随着g-C3N4含量的增加明显提高,在4×104 Lux的LED光激发10 min后培养24 h的P-CN-5的最大抗菌环直径可以达到20 mm.研究结果表明,P-CN复合纳米纤维膜含少量g-C3N4就具备优异的抗菌性能,未来在抗菌涂层和包装等领域有巨大的应用潜力.

In the face of severe environmental problems and resource shortage in the world today, photocatalysis technology has attracted much attention because of its green, efficient and environmentally friendly advantages. Photocatalysis converts solar energy into chemistry energy, which can be applied to water decomposition to produce hydrogen, degradation of organic contamination, CO 2 reduction, organic synthesis and other fields. In this paper, poly(dopamine)@carbon nitride (PDA@CN) was synthesized by dopamine self-polymerization on the surface of g-C 3 N 4 and the PVA/PDA@CN composite antibacterial nanofiber membranes were successfully prepared by electrospinning with PVA solution doped with PDA@CN. PDA can play a role in light absorption, electron transfer and adhesion interface. The results showed that PDA had an effect on the light-harvesting ability of PDA@CN, and the visible light capturing ability of PDA@CN increased. From the inhibition results, it could be seen that the PVA/PDA@CN nanofiber membranes with 5% PDA@CN had good inhibition effect on E. coli and S. aureus under visible light irradiation and the maximum inhibition circle radius could reach 10.8 mm and 11.6 mm, respectively, and the inhibition rate of E. coli could be up to 93.1%. According to the results of photocatalytic degradation experiments, the obtained PVA/PDA@CN membranes showed enhanced photocatalytic degradation efficiency under visible light. When the PDA@CN content was 5 wt.%, the removal rate of MB by PVA/PDA@CN membrane reached 98.7%. In addition, the membrane had good thermal stability and excellent mechanical properties, which had great potential for future applications in many fields.

Electrochemical nitrogen reduction reaction (NRR) under ambient conditions offers an environmentally benign and sustainable alternative for NH3 synthesis. Exploring highly active and robust NRR electrocatalysts is one of the prerequisites for developing sustainable N-2/NH3 cycle systems. In this work, a surface chemistry rich TiO2/CeO2 frame is developed for electrochemical NRR, which is composed of ultrathin TiO2 nanosheets supported with CeO2 nanoparticles. Its unique porous framework as well as formed plentiful oxygen vacancies (OVs) and hetero-interfaces collectively facilitate the adsorption/activation of N-2 and transfer of electrons and protons. The catalyst can attain a high NH3 yield rate of 8.8 mu g h(-1) mg(cat.)(-1) and a Faradaic efficiency of 6.8 % at -0.25 V versus reversible hydrogen electrode, comparable with other reported Ti-based and OVs-contained catalysts. Moreover, the TiO2/CeO2 can maintain high durability over repeated 20 cycles. Therefore, this work heralds a new paradigm of fabricating framework-structured catalyst with enriched hetero-interfaces and defects toward effective and sustainable NH3 synthesis.

In this work, a series of chitosan (CS)-grafted carbon oxynitride (OCN) nanoparticles (denoted as CS-OCN) were successfully synthesized for the first time by thermal polycondensation and subsequent esterification. The structure and photocatalytic performance of CS-OCN nanoparticles were investigated. The XPS spectra of CS-OCN-3 showed the presence of amino bonds. The optimal photocatalytic degradation efficiency of the synthesized CS-OCN-3 could reach 94.3% within 390 min, while the photocurrent response intensity was about 150% more than that of pure OCN. The improved photocatalytic performance may be mainly attributed to the enhanced photogenerated carrier's separation and transportation and stronger visible light response after CS grafting. In addition, the inhibition diameter of CS-OCN-3 reached 23 mm against E. coli within 24 h under visible light irradiation, exhibiting excellent photocatalytic bactericidal ability. The results of bacterial inhibition were supported by absorbance measurements (OD600) studies of E. coli. In a word, this work provided a rational design of an efficient novel metal-free photocatalyst to remove bacterial contamination and accelerate the degradation of organic dyes.