Traditional mineral oil-based cutting fluids are increasingly incompatible with sustainable manufacturing due to their environmental and health impacts. To solve these challenges, this work presented a green and scalable strategy for a high-performance nano-cutting fluid by constructing a plant-based Pickering emulsion. This system innovatively utilized cottonseed oil as the base oil, stabilized by oleylamine (OA) modified MoS2 nanosheets (MoS2-OA) at the oil-water interface. The formulation was rationally designed and optimized by response surface methodology (RSM) to synergistically enhance emulsion stability, lubrication, and heat dissipation. The resulting Pickering emulsion is demonstrated to possess a unique combination of significantly reduced friction and wear, along with improved thermal conductivity, outperforming a commercial cutting fluid. Mechanistic analysis revealed that MoS2-OA nanosheets formed a multifunctional interfacial film, which synergistically served as a “lubrication film” for low friction and a “thermal bridge” for efficient heat dissipation. Thus, a novel paradigm for developing sustainable metalworking fluids is established by leveraging the synergistic potential of non-edible plant oils and functional nanomaterials.

A novel thioether bond bridged triazine-based covalent organic framework (TTriC) was synthesized. TTriC exhibited a significant enhancement in tribological properties in PAO6, particularly in synergy with ZDDP. The TTriC/ZDDP composite demonstrated excellent tribological properties across various temperatures, load conditions, and test durations. It also improved extreme pressure performance to 1020N. This synergistic tribological mechanism may be attributed to the continuous adsorption of TTriC on the surface of the formed ZDDP friction film, providing a milder contact environment for the friction pairs. The interlayer sliding of TTriC reduced the loss of ZDDP friction film, thereby forming a stable chemically reactive film. This study provides a novel approach to the design of novel lubrication materials.

Cutting fluid in the material processing process is effective in taking away the heat generated to reduce the cutting temperature, as well as reduce friction and wear to improve the surface performance of the material. It is the most basic and necessary component of the material manufacturing industry. However, mineral oil-based cutting fluids and their additives contain some substances that not only jeopardize human health but also pollute the environment, and a great number of researchers are working hand in hand to find green, environmentally friendly alternatives to traditional mineral oil-based cutting fluids. Among them, vegetable oil is a promising and viable alternative, and some safe nanomaterials have been developed as additives to prepare user-friendly and eco-friendly vegetable oil-based nano-cutting fluids. This paper reviews the formulation, characterization, and mechanism of vegetable oil-based cutting fluids and systematically discusses the application of vegetable oil-based nano-cutting fluids in turning, milling, grinding, and drilling. The results of the review show that high-performance vegetable oil-based nano-cutting fluids could be developed to help advance the realization of green manufacturing. Finally, possible directions for future research on plant-based nano-cutting fluids are proposed.

Metal-organic frameworks (MOFs) have attracted much attention from researchers as a new type of nano-lubricating material with excellent tribological properties. However, they are poorly dispersed in base oils and tend to aggregate or even precipitate, which makes achieving good dispersion stability a major challenge. Herein, we report a new strategy using oleoyl diethanolamine (ODEA) nonionic surfactant to improve the dispersion of UiO-66-NH2, and 12-hydroxystearic acid (12-HSA) gel to enhance the stability of UiO-66-NH2. Subsequently, the differential scanning calorimetry (DSC) results demonstrated that 12-HSA and UiO-66-NH2-O could improve the thermal stability of PAO-6 by increasing the decomposition temperature by 9.79% as well as decreasing the crystallization temperature by 13.32%. In addition, rheological results suggested that UiO-66-NH2-O improved the mechanical stability of the gel by a factor of 3.05. Fortunately, the four-ball friction results show that gel with 2000 ppm UiO-66-NH2-O can reduce the average coefficient of friction (ACOF) by 30.84% and the wear scar diameter (WSD) by 50.07%, respectively. Finally, scanning electron microscopy-energy-dispersive spectrometry (SEM-EDS) and x-ray photoelectron spectroscopy (XPS) analyses of the wear surfaces revealed that during friction, UiO-66-NH2-O acts as "nano-bearings" as well as "skeleton support" to form a homogeneous and stable lubrication film, which provides excellent lubrication performance.

Cutting fluids have long occupied an essential position in industrial manufacturing, but traditional mineral oil-based cutting fluids have limited their application in advanced manufacturing due to hazardous health, non-degradability, and poor thermal conductivity and cleaning ability. To this end, MXene (Ti3C2) was combined with oil-in-water (O/W) Pickering emulsion prepared from β-cyclodextrin-stabilized cottonseed oil to develop a new, highly efficient, environmentally friendly nano-cutting fluid. Among them, β-cyclodextrin, a cyclic oligosaccharide, can be employed as Pickering particles to improve the antioxidant and emulsion stability of cottonseed oil; MXene, an emerging class of 2D nanomaterials possessing excellent lubricating properties, mechanical properties, and thermal stability, is an ideal material for the preparation of high-performance nano-cutting fluids. Optimized by the response surface design, the prepared Pickering emulsion with MXene (0.1wt.%) remained stable for about a month without delamination and improved the thermal conductivity by 136.4% compared to cottonseed oil. Meanwhile, the coefficient of friction (COF), wear spot diameter (WSD), and tapping torque of Pickering emulsion with MXene were reduced by 35.64%, 10.90%, and 17.13%, respectively, compared with cottonseed oil, and also outperformed commercial cutting fluids. The reduction is attributed to the fact that the oxygen functional groups on the surface of MXene can form hydrogen bonds, which are adsorbed on the friction side to form a strong and dense lubricant film.

The development of novel high -performance lubricants is of great significance to reduce energy consumption and save energy. Herein, we report a zirconium-based MOF functionalized with tetradecylphosphonic acid (TDPA-ZrMOF), as a lubricant additive in soybean oil (SO). The tribological properties of TDPA-Zr-MOF were systematically measured by a four -ball test machine, which showed that soybean oil with TDPA-Zr-MOF exhibit better tribological properties compared with pure soybean oil. The friction coefficient and wear scar diameter are significantly reduced, both of which can be decreased by more than 35%. Based on the analysis of morphology and chemical composition of the worn surface, it is concluded that the excellent anti -friction and anti-wear properties of TDPA-Zr-MOF attributed to rolling effect and protective film effect.

In recent years, metal–organic frameworks (MOFs) have attracted much attention in lubrication due to their unique structures.

本文针对产教融合在实施层面的"合而难融"等问题,以上海应用技术大学为例,从协同创新与协同育人"双协同"理念出发,探索实践产教融合"双协同"人才培养模式,提出对接产业发展优化学科专业布局、搭建"三级平台"赋能产教融合创新路径、建设现代产业学院、创新产教联动发展机制、共建高水平协同创新平台促协同育人、创新优化能力导向产教融合的研究生课程体系五个方面的具体做法,为地方应用型高校创新发展提供了新思路、新范式.

Radioactive iodine in nuclear waste would be harmful to nature and human health. The design of adsorbents for iodine capture with high efficiency still remains a challenge. Herein, two highly conjugated two-dimensional covalent organic frameworks (TFPB-BPTA-COF and TFPB-PyTTA-COF) have been successfully constructed. Both COFs possess high porosity, stability, and a high pi-conjugated framework. Impressively, TFPB-PyTTA-COF exhibits an excellent iodine uptake value of up to 5.6 g g(-1), which is superior to most reported COF-based adsorbents for iodine capture.

MXenes have shown great promise in high-efficiency energy storage on account of superior electrical conductivity and outstanding mechanical properties. However, the practical applications of MXenes in electrochemical energy storage are limited by layer restacking and surface oxidation issues. Herein, a unique sandwich-like Na2Ti3O7 nanosheet/ Ti3C2 MXene composite (NTO@MXene) with an expanded interlayer spacing of MXene has been fabricated by one-step simultaneous alkalization and oxidation. The NTO@MXene with a unique structure shortens the ion diffusion distance and promotes electrolyte infiltration, which is favorable for high-performance rechargeable batteries. As a result, the NTO@MXene composite as an anode electrode for lithium-ion batteries delivered exceptional rate performance (159 mAh g-1 at 4 A g-1) and long-life cycling performance (capacity retention of nearly 100% at 4 A g-1 after 1200 cycles). When used as a sodium-ion battery anode, the electrode also achieved an extraordinary capacity of 103 mAh g-1 at 0.1 A g-1 and an exceptional capacity retention of 70% at a high current density of 2 A g-1 after 3000 cycles.

Waste rolling oil (WRO) can be regenerated by polymer flocculation-adsorption. Poly diallyl dimethyl ammonium chlorid (PDADMAC) is a linear high polymer with quaternary ammonium cations which was selected as an polymer flocculant. Effects of different treatment conditions on the performance of the recycled oil were investigated. Results indicated that the recycled oil achieved optimum quality under the following conditions: mass ratios of PDADMAC-WRO, KOH-WRO of 0.02 and 0.075, refining time, 20 min, refining temperature, 40 degrees C, stirring speed, 500 rpm, respectively. Compared with traditional regeneration methods, this flocculation method has higher effectiveness and can reduce the treatment time and cost.

Oxygen reduction reaction (ORR) plays key roles in fuel cells and metal air batteries. Covalent organic frameworks (COFs)‐derived carbons have been utilized for catalyzing ORR. However, the activity and selectivity for these catalysts in the acidic medium is still under improved. In this work, Pt atoms and uniform Pt nanoparticles supported by standing carbons are derived from a three‐dimensional COF. With increasing the contents of Pt ions, the corresponding particle sizes show obvious decrease, and thus resulting in higher catalytic activity. The synergetic roles between Pt atoms and nanoparticles with average sizes of 6.19 nm make catalyst show remarkable activity toward ORR, with onset potential and half‐wave potential of 0.98 and 0.85 V (vs RHE) in the acidic medium, which are 70 and 40 mV more positive than those of Pt/C, respectively. This work provides a new insight for developing COFs in energy storage and conversion systems.

Due to the large reversible capacities, transition-metal oxides have received a lot of interest as anodes for lithium-ion batteries. However, their poor electrical conductivity and dramatic volume change prevent them from being widely used in lithium-ion batteries. In this study, we present a double protection strategy by fabricating a pomegranate-like N-doped carbon-coated CoOx clusters supported on three-dimensional (3D) graphene framework structure (NC@CoOx@GF) to improve the electrochemical performance of CoQ(x) in lithium storage. The hierarchical structure is constructed by the thermal transformation of Co-MOF to CoOx with N-doped carbon/graphene by using polyaniline-coated metal-organic framework (Co-MOF)/graphene oxide as precursors. The pomegranate clusters coupled with porous CoOx induced by the partial thermal collapse of the MOF with N-doped carbon were derived from polyaniline and 3D high-conductivity graphene frameworks. The confinement of the clusters effectively relieves the volume expansion of CoOx and significantly shortens the transport paths of electrons and ions in the composite. The robust 3D graphene frameworks further offer highly interpenetrated conductive networks. Therefore, the flexible NC@CoOx@GF anode delivered a high capacity (at 0.1 Ag-1, 1153 mA h g(-1)), excellent rate performance (at 8 A g(-1), 337 mA h g(-1)) and superlong cycling stability (66.4% capacity retention after 2500 cycles at 1000 mA g(-1)).

Organic carbonyl polymers have been gradually used as the cathode in lithium-ion batteries (LIB). However, there are some limits in most organic polymers, such as low reversible capacity, poor rate performance, cycle instability, etc., due to low electrochemical conductivity. To mitigate the limits, we propose a strategy based on polyimide (PI)/graphene electroactive materials coated with reduced graphene oxide to prepare a flexible film (G@PI/RGO) by solvothermal and vacuum filtration processes. As a flexible cathode for LIB, it provides a reversible capacity of 198 mA h g(-1) at 30 mA g(-1) and excellent rate performance of 100 mA h g(-1) at high current densities of 6000 mA g(-1), and even a super long cycle performance (2500 cycles, 70% capacity retention). The excellent performance results in a special layer structure in which the electroactive PI was anchored and coated by the graphene. The present synthetic method can be further applied to construct other high-performance organic electrodes in energy storage.

In this study,various nonionic surfactants（NS） with different ethylene oxide（EO） numbers and tail lengths and its binary blends with anionic surfactants（AS） were used as emulsifiers for naphthenic oil to form the microemulsion metalworking fluids（MWFs）,and the effects of them on the stability of the emulsion system were investigated by formulation triangle method.The results indicated that binary complex surfactants of NS and AS as emulsifiers exhibited better emulsifying effect than that of single NS.NS with different EO numbers and tail lengths presented various emulsifying effects.NS（EO=10）exhibited the greatest number of stable formulations,especially the TX-10,but no linear relationship existed between the number of stable formulations and the tail length of NS.In addition,aromatic primary alcohol ethoxy late（APAE） series surfactants containing benzene groups similar to the cycloalkanes in the naphthenic oil so that presented the best emulsifying affect and the greatest number of stable formulations.The co-surfactant of sodium dodecyl benzene sulfonate（SDBS） binary blends with NS exerted the best synergistic effect,and the stable formulations numbers were ranged from 5 to 7,next sodium stearate（SS） comes last followed by sodium dodecyl sulfate（SDS-1） and sodium dodecyl sulfonate（SDS-2）.

A nitrogen-doped carbon layer coating on a 3D graphene framework (NCL@GF) was produced by the in-situ polymerization of a uniform polyimide layer on the graphene framework surface and a carbonization process. The NCL@GF exhibited a 3D macroporous structure with uniform N-doped porous carbon layers and a high 5.4 at. % nitrogen content, which not only effectively enhanced the active sites but also facilitated fast ion and electron transport in the 3D pathways. Consequently, the NCL@GF as the anode of a sodium-ion battery (SIB) exhibited a discharge capacity of 357 mAh g-1 at 0.1 A g-1 after 200 cycles, a remarkable rate capability with a capacity of 122 mAh g-1 at 8 A g-1 , and a super long cycle life with a capacity retention of 70 % capacity after 2500 cycles at 0.5 A g-1 . Such performance is superior to that of previously reported carbon or graphene-based composites.

Multifunction luminogens have emerged as promising candidates in high-performance sensor and imaging systems. Concise approaches to the synthesis of such molecules are urgently required both for fundamental research and technological applications. In this study, a new symmetric ligand of di(2-hydroxyphenyl)phthalazine with multiple binding sites around a phthalazine unit was readily synthesized, which could be converted efficiently into an asymmetric luminogen (OBN-DHPP) through the formation of oxygen-boron-nitrogen bonding. This molecule has a twistable π-extended backbone with a tetracoordinated boron core bearing two bulky phenyl groups, giving it abundant optical properties including a large Stokes shift piezochromism and aggregation-induced emission enhancement. Importantly, the presence of a free phenolic hydroxyl group in the backbone of OBN-DHPP enables the incorporation of various functional moieties into the asymmetric luminogen. As an example, polyethylene glycol (PEG)-modified luminogen (OBN-DHPP-PEG45) was synthesized. In the aqueous medium, OBN-DHPP-PEG45 could self-assemble into spherical nanoparticles with low cytotoxicity and excellent emission performance as well as high solubility. The results of flow cytometry and fluorescence microscopy reveal that these nanoparticles could be internalized successfully by HeLa cells, demonstrating their potential application in bioimaging.

To generate efficient pour point depressants (PPDs) for biodiesel, this study prepared a series of MC-MA polymers and their cold flow properties on biodiesel were studied by determining their solid points (SPs) and cold filter plugging points (CFPPs). This study also investigated the performance mechanisms of these polymers through differential scanning calorimetry (DSC) and rheological mechanics to identify the low-temperature crystal morphology and crystallization behavior of the biodiesel samples. Results indicated that compared with other polymers, the synthesis of polymer PPD2 could satisfactorily improve the low-temperature flow properties of biodiesel without altering other important fuel properties.

Long-chain alkyl (i.e., tetradecyl, hexadecyl, and octodecyl) methacrylate (MC), maleic anhydride (MA), and methylamidemorpholine (MCNR2) were used in this study to prepare a series of MC-MA-MCNR2 terpolymers and their amine compounds (MC-MA-MCNR2-a) to obtain efficient pour point depressants (PPDs) for diesel fuel. The MC-MA-MCNR2 and MC MA MCNR2 a terpolymers were successfully synthesized and then characterized by Fourier transform infrared (FTIR) spectroscopy, proton nudear magnetic resonance (H-1 NMR), and gel permeation chromatography (GPC). The effects of the addition of the PPDs on the solid point (SP) and cold filter plugging point (CFPP) of diesel fuel were also investigated. Furthermore, the interactions between the additives and wax crystals were elucidated through differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and rheological mechanics. Results indicate that all of the terpolymer PPDs significantly improved the performance of 0# diesel fuel samples at low temperature. PPDC2 displayed the best performance in decreasing the SP and CFPP of diesel fuel by 19 and 11 degrees C, respectively. In addition, DSC analysis showed that the terpolymer PPDs reduced the temperature of paraffin precipitation of diesel fuel. However, POM analysis showed that addition of the PPDs did not prevent wax precipitation completely but merely shifted the precipitation toward a lower temperature. Moreover, the addition of the terpolymer PPDs remarkably decreased the viscosity of diesel fuel.