Transition metal selenides (TMSs), as promising anode materials for sodium ion batteries (SIBs), still face sluggish Na+ diffusion kinetics and severe volume change, resulting in undesirable cycling stability and rate capability. Heterostructure construction is an effective method to improve sodium ion storage in TMSs. Herein, a hierarchical hollow heterostructure of CoSe2@SnSe is precisely designed through a facile coprecipitation process followed by a selenization strategy. The heterostructure constructed by CoSe2 and SnSe nanocrystals induces the formation of built-in electric fields and accelerates electron transfer and ion diffusion, thereby improving reaction kinetics significantly. When the as-prepared CoSe2@SnSe composites are employed as anode materials of SIBs, there exhibit ultra-fast electrochemical reaction kinetics and outstanding cycling stability with a high capacity retention of 488.9 mAh g-1 at a current density of 2.0 A g-1 after 900 cycles. In addition, there still shows an exceptional rate capability of 409.5 mAh g-1 at a high current density of 10 A g-1. This work provides an effective method for the rational designing of heterostructure anode materials for high-performance SIBs. (c) 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

A flexible bismuth (Bi)-based smartsensor capable of simultaneously detecting Cd2+, Tl+, and Pb2+ is proposed for the first time. Fabricated via a template-assisted electrodeposition method, this novel sensor demonstrates excellent selectivity in distinguishing these heavy metal ions (HMIs). The developed platform holds broad application prospects for on-site HMI monitoring.

Nanoscale zinc oxide is a multifunctional nanomaterial extensively utilized across various domains due to its exceptional physicochemical properties.Traditional synthesis methods often face challenges such as high costs,complex procedures,and product instability.The microemulsion synthesis overcomes these issues,offering simplicity,cost-effectiveness,and controllable produce dimensions.Notably,the use of waste soybean oil as an emulsifier in the synthesis process aligns with the principles of green chemistry and sustainable development,highlighting waste material reuse.The nanoscale zinc oxide products were characterized using X-ray diffraction(XRD),scanning electron microscopy(SEM),and chemical analysis.This approach fosters a comprehensive integration of inorganic synthesis,chemical and instrument analysis,aiming to enhance the holistic experimental capabilities of university students.

In response to the weak sense of professional mission and values among students caused by the insufficient integration of ideological and political elements with professional knowledge in chemistry experiment teaching,the Analytical Chemistry Experiment course organically incorporates ideological and political elements into the experimental content.It formulates the"Trinity"educational goals of integrating knowledge,skills,and qualities,establishes a"six-focus"ideological and political case library,implements the"seven-integration"curriculum ideological and political teaching measures,innovates the"five-interaction"ideological and political education design,and creates challenging classrooms with depth and warmth.It engages in dialogues with students on knowledge,thinking,and emotions.

介绍了一种简单、快速合成乙二胺四乙酸铁钠的方法.在加热煮沸条件下,缩短反应时间,成功合成了NaFe EDTA,突破了传统水浴反应的时间约束.此方法反应时间短,操作方便,产物纯度好,收率高,适合作为普通高等学校本科生教学实验内容使用.在乙二胺四乙酸铁钠的制备和定性分析过程中,学生能够掌握含铁配合物的制备技术,并加深对减压过滤、蒸发等基本操作知识点的掌握与运用.

The heterogeneous Fenton oxidation is regarded as a promising technology for refractory organic pollutants removal relying on highly active & BULL;OH generated via the decomposition of H2O2 catalyzed by iron-based catalyst that overcomes the issues of pH limitation and iron sludge discharge encountered in conventional Fenton reaction. However, the efficiency of & BULL;OH production in heterogeneous Fenton remains low as the limited mass transfer between H2O2 and catalysts caused by the poor H2O2 adsorption. Here, a nitrogen-doped porous carbon (NPC) catalyst with tunable N configuration was prepared for electrochemical-activation of H2O2 to & BULL;OH by enhancing the H2O2 adsorption on catalysts. The resultant & BULL;OH production yield on NPC reached 0.83 mM in 120 min. Notably, the NPC catalyst could be more energy-efficient for actual coking wastewater treatment with an energy consumption of 10.3 kWh kgCOD  1 than other electro-Fenton catalysts reported (20-29.7 kWh kgCOD  1 ). Density function theory (DFT) revealed that highly efficient & BULL;OH production was ascribed to the graphitic N which enhances the adsorption energy of H2O2 on NPC catalyst. This study provides new insight into the fabrication of efficient carbonaceous catalysts by rationally modulating electronic structures for refractory organic pollutants degradation.

This project introduces an enhanced approach to the experimental preparation of Sodium Ferric Ethylenediaminetetraacetate(NaFeEDTA)as an iron supplement.Bridging theoretical concepts with practical manufacturing,the experimental design is aligned with pharmaceutical production processes.It incorporates a comprehensive set of modules,ranging from experimental design and drug preparation to structural identification and purity analysis.The project transforms the experiment from a validation-based exercise to a holistic,design-oriented experiment.Students are guided to consider quality control,safety protocols,and environmental protection as part of their experimental design.This experimental framework accommodates multiple patent pathways,stimulating students'investigative interests and fostering skills in experimental design and critical thinking.It aims to enhance students'problem-solving capabilities,improve their scientific literacy,and boost their confidence in the field.

While taking fundamental chemistry experiments courses, students may easily lose their interest owing to their limited understanding of related chemical principles.Many of these principles involve microscopic concepts and quantities hard to determine and describe, such as the interaction among matters, state of electrons in matters, the interactions between light and electricity with molecules.Results from theoretical chemistry investigations are capable to bridge this gap and present these quantities and concepts more vivid for students to understand the principles easily.Considering the separation of alcohols by gas chromatography as an example, we attempted to combine theoretical chemistry investigations with fundamental chemistry experiments to help students rationalize the chromatography theory with experimental and theoretical results.In addition to conventional experiments, students investigated the alcohols-adsorbents interactions theoretically and analyzed the results.This approach not only successfully stimulated students to learn and understand chemical principles more comprehensively, cultivated their problem identification and resolution abilities, but also promoted the teaching quality, thus benefiting the cultivation of top innovative talents in chemistry.

应对新时代对个性化全面发展人才培养的需求,构建了具有教学决策数据化、人才培养个性化特征的生态化+智慧化实验教学模式.秉承"以生为本,个性化发展"的实验教学理念,层次化设置项目内容,实施"递进型"教学流程,逐层提升课程的挑战度."寓教于研",以科研思维开展基础实验教学.通过教学内容、教学模式等的改革,促进学生自主探究、自主发展,实现学生个性化创新能力的发展.

: Methanol, a basic chemical raw material, is a common solvent in production and one of the common fuels of alcohol fuel cells. However, it is volatile and can cause toxicity to the human nervous system. Therefore, real-time monitoring of the concentration of methanol vapor in the environment is of great significance. In this paper, a comprehensive experiment “a wearable intelligent high selectivity gas-liquid bifunctional methanol electrochemical sensor” was designed on the basis of scientific research achievements. The experiment includes inorganic material synthesis, screen printing preparation, instrumental analysis and characterization, electrochemical sensing and detection, covering the main related knowledge points of several chemistry courses, thus is very comprehensive and cutting-edge. Through this experiment, students can not only consolidate the basic knowledge of chemistry, master the synthesis and characterization skills of graphene materials, but also understand the working principle of electrochemical sensors, which greatly stimulate students’ interests in scientific research.

The non-solvent induced phase separation method is utilized to produce a free-standing electrode with good conductivity retention during 1000 bending/stretching cycles. The as-prepared electrode has been fabricated for an integrated device consisting of an ethanol fuel cell, a supercapacitor and a motion sensor. This method for fabricating free-standing electronics reveals a cost-effective approach towards wearable devices.

Unhealthy alcohol inhalation is among the top 10 causes of preventable death. However, the present alcohol sensors show poor selectivity among alcohol homologues. Herein, Pt-coated truncated octahedron Au (Ptm@Auto) as the electrocatalyst for a highly selective electrochemical sensor toward alcohol homologues has been designed. The alcohol sensor is realized by distinguishing the electro-oxidation behavior of methanol (MeOH), ethanol (EtOH), or isopropanol (2-propanol). Intermediates from alcohols are further oxidized to CO2 by Ptm@Auto, resulting in different oxidation peaks in cyclic voltammograms and successful distinction of alcohols. Ptm@Auto is then modified on wearable glove-based sensors for monitoring actual alcohol samples (MeOH fuel, vodka, and 2-propanol hand sanitizer), with good mechanical performance and repeatability. The exploration of the Ptm@Auto-based wearable alcohol sensor is expected to be suitable for environmental measurement with high selectivity for alcohol homologues or volatile organic compounds.

The charge transfer is a ubiquitous phenomenon in nature, and the physicochemical properties of the materials change due to the change of electronic configurations during the charge-transfer process.Charge transfer complexes with tunable properties actuated by external stimuli have potential applications in the fields of smart responsive materials and molecular sensing.In this paper, a novel comprehensive experiment is designed based on scientific research achievements: the preparation and properties of smart molecular materials with reversible thermalinduced charge-transfer effect.The experiment includes synthesis of metal-organic complexes, preparation of thin-film materials, instrumental analysis of the materials and research on thermochromic effect of materials, in which the main relevant knowledge points of most chemistry courses could be covered.The experiment is comprehensive and presents frontiers of disciplines.Through this experiment, students can not only consolidate the basic knowledge of relevant chemical theory including mastering the synthesis and characterization of metal-organic complexes and understanding the response mechanism of thermal sensor devices, but also can be attracted by the scientific research, and their scientific literacy can be improved.

Self-powered sensors have attracted great attention in the field of analysis owing to the necessity of power resources for the routine use of sensor devices. However, it is still challenging to construct wearable self-powered sensors in a simple and efficient way. Herein, wearable self-powered textile smart sensors based on advanced bifunctional polyaniline/reduced graphene oxide (PANI/RGO) films have been successfully developed for remote real-time detection of vitamin C. Specifically, a pH-assisted oil/water (O/W) self-assembly strategy was proposed to boost the O/W self-assembled PANI/RGO films via proton regulation. The as-obtained PANI/RGO films could be directly loaded on the textile substrate, with good capacitive and biosensing performance due to the multifunctionality of PANI and RGO, respectively. Moreover, both wearable power supply devices and wearable biosensors based on PANI/RGO films possess good electrochemical performance, which paves the way for the actual application of self-powered nutrition monitoring. Significantly, obvious signals have been obtained in the detection of vitamin C beverages, exhibiting promising application values in daily nutrition track necessities. Prospectively, this study would provide an effective and simple strategy for integrating wearable self-powered sensors, and the developed smart sensing system is an ideal choice for the portable detection of nutrition.

针对高校化学实验室安全管理工作中的难题,搭建化学品安全监管平台,实现化学品的"闭环"精细化管理;以虚拟仿真体验为特色,建设集安全教育资源、安全考试考核、安全准入认证、安全管理等功能为一体的智慧化学实验室安全准入平台,积极探索实验室安全准入平台的学习流程和运行管理机制.通过化学实验室安全体系的构建和实施,消除化学品的安全隐患,增强学生的安全责任意识,减少安全事故的发生,保障化学实验室安全.

There are many problems in the process of chemistry laboratory teaching.For example, students have no research experience and time to think and explore, teachers are busy with imparting knowledge and have no time to consider students' personal needs.Analytical chemistry experiment course aims at cultivating innovative talents, by taking ideological and political education as the engine, experimental projects as the driving force, online courses as the support, and teaching platform as the vehicle.The "five methods linkage" teaching design has been implemented and completed, that is, before class preparation, problem speculation, practical exploration, frontier leading, competition-teaching combination.The design effectively activated the students' innovative practice ability, selflearning consciousness, team cooperation consciousness and innovative spirit; it also effectively helped establish the sense of national identity, social responsibility and historical mission, and ensured realization of the goal.

Organic dyes and copper ions are the main industrial wastewater pollutants, which have potential threats to the environment and humans. Here, a novel β-cyclodextrin decorated reduced graphene oxide complex (rGO-β-CD) is synthesized by wet-chemical strategy. The characterization results confirm the successful synthesis of rGO-β-CD complex, which also exhibits high stability in polar solvent. In addition, the quantitative analysis reveals that rGO has excellent loading capacity for β-CD (up to 19 wt.%). Benefiting from the tightly stacked structure, the rejection rate of the rGO-β-CD membrane for rhodamine B (RhB), methyl orange (MO) and evans blue (EB) is nearly 100%. Furthermore, the membrane displays significantly lower copper ions permeation in mixed ion solutions, with a permeability of 0.05 mmol m -2 h -1 . Importantly, the membrane exhibits specific adsorption for copper ions, resulting in a Zn 2+ /Cu 2+ selectivity of 4.6. Based on the results, rGO-β-CD membrane was observed to be a promising material for wastewater treatment. This study provides a novel rGO-β-CD membrane to separate organic dyes and copper ions from wastewater.

邻二氮菲分光光度法测定微量铁是经典的仪器分析实验,但其涉及的知识点和实验操作技能有限,无法满足新时期人才培养的需求.该文介绍了利用铁离子还原/抗氧化能力法(FRAP法)评价饮品中还原性物质含量实验,通过绘制吸收曲线和标准工作曲线等实验环节,全面提高学生综合运用各种分析方法和实验操作技术的能力,培养学生创新思维能力和处理实际问题能力,帮助学生深刻体会分析化学在人类生活中的实际应用,为学生将来从事科研工作奠定坚实的基础.

As an essential electrolyte for the human body, the potassium ion (K+) plays many physiological roles in living cells, so the rapid and accurate determination of serum K+ is of great significance. In this work, we developed a solid-contact ion-selective electrode (SC-ISE) using MoS2/Fe3O4 composites as the ion-to-electron transducer to determine serum K+. The potential response measurement of MoS2/Fe3O4/K+-ISE shows a Nernst response by a slope of 55.2 ± 0.1 mV/decade and a low detection limit of 6.3 × 10−6 M. The proposed electrode exhibits outstanding resistance to the interference of O2, CO2, light, and water layer formation. Remarkably, it also presents a high performance in potential reproducibility and long-term stability.

在基础化学实验课程中以"统筹规划、共建共享"为原则,在实验教学过程中深入挖掘各实验课程和实验项目中蕴含的思政教育资源,凝练成涵盖"家国情怀""科学家/大国工匠""科技创新（理论/技术和方法创新）""安全环保""社会责任/职业素养""朋辈榜样"六大主题的化学实验课程思政案例库,并结合多形态呈现的"智能+教学"实验教学模式,多途径强化教师"育德"能力,充分发挥化学实验课程育人功能。