摘要：CO_(2)hydrogenation to value-added light olefins(C_(2-4)=)is crucial for the utilization and cycling of global carbon *** CO_(2)activation and carbon chain growth ability are key factors for iron-based catalysts for efficient CO_(2)conversion to target C_(2-4)=*** electronic interaction and confinement effect of electron-deficient graphene inner surface on the active phase are effective to improve surface chemical properties and enhance the catalytic ***,we report a core-shell FeCo alloy catalyst with graphene layers confinement prepared by a simple sol-gel *** electron transfer from Fe species to curved graphene inner surface modifies the surface electronic structure of the active phaseχ-(Fe_(x)Co_(1-x))_(5)C_(2)and improves CO_(2)adsorption capacity,enhancing the efficient conversion of CO_(2)and moderate C-C ***,the catalyst FeCoK@C exhibits C_(2-4)=selectivity of 33.0%while maintaining high CO_(2)conversion of 52.0%.The high stability without obvious deactivation for over 100 h and unprecedented C_(2-4)=space time yield(STY)up to 52.9 mmolCO_(2)·g^(-1)·h^(-1)demonstrate its potential for practical *** work provides an efficient strategy for the development of high-performance CO_(2)hydrogenation catalysts.

摘要：Photocatalysis provides a promising solution to the worldwide shortages of energy and industrially important raw materials by utilizing sunlight for coupled hydrogen(H_(2))production with controllable organic ***,we demonstrate that PtFeNiCoCu high-entropy alloy(HEA)nanocrystals can act as efficient cocatalysts for H_(2)evolution coupled with selective oxidation of cinnamyl alcohol to cinnamaldehyde by cubic cadmium sulfide(CdS)quantum dots(QDs)with uniform sizes of 4.0±0.5 *** nanocrystals were prepared via a simple solvothermal approach,and were successfully integrated with CdS QDs by an electrostatic self-assembly method to construct HEA/CdS *** optimized HEA/CdS sample presented an enhanced photocatalytic H_(2)production rate of 7.15 mmol g^(-1)h^(-1),which was 13 times that of pure CdS ***,a cinnamyl alcohol conversion of 96.2%with cinnamaldehyde selectivity of 99.5%was achieved after photoreaction for 3 *** integration of HEA with CdS QDs extended the optical absorption edge from 475 to 484 *** d-band center analysis,Pt atoms in the HEA are the active sites for H_(2)evolution,exhibiting higher catalytic activity than pure ***,the band structure of the CdS QDs enables the oxidative transformation of cinnamyl alcohol to cinnamaldehyde with high ***,femtosecond transient absorption spectroscopy shows that HEA can significantly promote the separation of photogenerated carriers in CdS,which is vital for achieving enhanced photocatalytic *** work inspires atomic-level design of photocatalytic materials for coordinated production of green energy carriers and value-added products.

摘要：Lithium metal batteries (LMBs) using gelpolymer electrolytes with satisfactory theoretical capacity andlow cost hold great promise for high energy density storagesystems. However, the inherently unwanted polarizations anduncontrolled lithium dendrites resulting from inferior Li-iontransporting efficiency hinder the practical application ofconventional gel electrolytes. Herein, a highly conductivecomposite gel polymer electrolyte with effective Li-ion conducting channels is designed via swelling nanofibrous membrane, where the single-ion conducting polymer of lithiumsulfonate-based polyether (DEBS-Li) used as the Li-ion accelerator is combined with poly(vinylidene fluoride-hexafluoropropylene)P(VDF-HFP) matrix by the electrospinningtechnology. The DEBS-Li having rich sulfonic groups canpromote lithium salts dissociation via electrostatic interaction,thus expediting the ionic migration and enabling the as-developed gel electrolyte with high ionic conductivity (~1.58×10^(−3) S cm^(−1)) and lithium transference number (0.62) at 25℃.Such optimization of ionic transfer kinetics can highly delaythe nucleation time of lithium dendrite and significantly inhibit dendritic formation, which leads to a stable Li plating/stripping in the symmetrical battery over 250 h at1.5 mA cm^(−2). Benefiting from these advantages, the Li||LiFePO_(4)cell using the electrolyte realizes ultralong stable cyclingover 500 cycles at a high rate of 10 C with ~90% capacityretention. We believe this novel lithium sulfonate-basedpolyether gel polymer electrolyte has profound potential forpractical applications in high-performance LMBs.

摘要：Detection of target analytes at low concentrations is significant in various fields,including pharmaceuticals,healthcare,and environmental ***(TP),a natural alkaloid used as a bronchodilator to treat respiratory disorders such as asthma,bronchitis,and emphysema,has a narrow therapeutic window with a safe plasma concentration ranging from 55.5-111.0μmol·L^(-1)in *** monitoring of TP levels is essential because too low or too high can cause se-rious side *** this regard,non-enzymatic electrochemical sensors offer a practical solution with rapidity,portability,and high *** article aims to provide a comprehensive review of the recent developments of non-enzymatic electrochemical sensors for TP detection,highlighting the basic principles,electro-oxidation mechanisms,catalytic effects,and the role of modifying materials on electrode ***-based electrodes such as glassy carbon electrodes(GCEs),carbon paste electrodes(CPEs),and carbon screen-printed electrodes(SPCEs)have become the primary choices for non-enzymatic sensors due to their chemical stability,low cost,and flexibility in *** article identifies the sig-nificant contribution of various modifying materials,including nanomaterials such as carbon nanotubes(CNTs),graphene,metal oxides,and multi-element *** modifications enhance sensors’electron transfer,sensitivity,and selectivity in detecting TP at low concentrations in complex media such as blood plasma and pharmaceutical *** electro-oxidation mechanism of TP is also discussed in depth,emphasizing the hydroxyl and carbonyl reaction pathways strongly influenced by pH and electrode *** mechanisms guide the selection of the appropriate electrode ma-terial for a particular *** main contribution of this article is to identify superior modifying materials that can improve the performance of non-enzymatic electrochemical *** a recent study,

摘要：An effective procedure for constructing a DNA biosensor is developed based on covalent immobilization of NH2 labeled,single strand DNA（NH2-ssDNA） onto a self-assembled diazo-thiourea and gold nanoparticles modified Au electrode（diazo-thiourea/GNM/Au）.Gold nano-particles expand the electrode surface area and increase the amount of immobilized thiourea and single stranded DNA（ssDNA） onto the electrode ***-thiourea film provides a surface with high conductibility for electron transfer and a bed for the covalent coupling of NH2-ssDNA onto the electrode *** immobilization and hybridization of the probe DNA on the modified electrode is studied by differential pulse voltammetry（DPV） using methylene blue（MB） as a well-known electrochemical hybridization *** linear range for the determination of complementary target ssDNA is from 9.5（±0.1） × 10^-13 mol/L to1.2（±0.2） x 10^-9 mol/L with a detection limit of 1.2（±0.1） 〉 10^-13 mol/L.

摘要：A new ion-imprinted polymer （liP） was synthesized by copolymerization of 4-vinylpyridine （monomer）, ethyleneglycoldimethacrylate （cross-linker） and 2,2-azobis-isobutyronitrile （initiator） in the presence of Cd2＋ and quinaldic acid （complexing agent）. It was found that the adsorption capacity of IIP and blank polymer were 45.0 and 6.2 mg g-l, respectively. The relative selectivity coefficients of the imprinted polymer for different binary mixture were also calculated. Compared to non-imprinted polymer （NIP）, the IIP had higher selectivity for Cd（II）. The IIP was used as a sorbent for cadmium extraction from water samples by using a simple batch extraction procedure. The effect of different parameters on Cd2＋ extraction and its recovery from the IIP were evaluated and optimized by using experimental design methodology. The optimized adsorption/desorption procedure was applied for cadmium removal from the real water samples. The obtained recoveries proved that this IIP could be used for removal of trace cadmium ions from water samples.

摘要：A novel type of molecular tweezer receptors based on deoxycholic acid has been designed and synthesized and their binding properties were examined by UV-vis spectral titration. These molecular tweezers showed a high selectivity toward F^- over Cl^-, Br^-, I^-, AcO^-, H2PO4^-.

摘要：Highly Pathogenic Avian Influenza（HPAI） H5N1 has attracted much attention as a potential pandemic virus in humans, which makes death inevitable in humans. Neuraminidase（NA） has an important role in viral replication. Thus, it is an attractive target when designing anti-influenza virus drug. However, evolving viruses cause some anti-viral drugs to be ineffective, as they show resistance to them. Selection of peptides as drug candidates is important for the peptide-receptor activity and good selectivity. Cyclic bonds in the peptide ligand design aim to improve the stability of the system and remove the obstacles in drug metabolism. The design is based on the polarity of the ligand and amino acid residues in the active site of NA. The results are 4200 cyclic pentapeptides as potential lead compounds. Docking simulations were conducted using MOE 2008.10 and were screened based on the value of the binding energy（？Gbinding）. ADME-Tox prediction assay was conducted on the selected ***- and inter-molecular interactions, as well as changes in the form of bonds, were tested by molecular dynamics simulations at temperatures of 310 K and 312 K. The results of the docking simulations and toxicity prediction assay show that there are two ligands that have a residual interaction with the target protein： CLDRC and CIWRC. These two ligands have ？Gbindingvalues of –40.5854 and –39.9721 kcal/mol（1 kcal/mol = 4.18 k J/mol）. These ligands are prone to be mutagenic and carcinogenic, and they have a good oral bioavailability. The results show that the molecular dynamics of both ligand CLDRC and CIWRC are more feasible at the temperature of 312 K. At the end,both CIWRC and CLDRC ligands can be used as the drug candidates against H5N1 virus.

摘要：目前,硫化矿是贵金属的主要来源。在硫化矿处理过程中存在的主要问题之一是其在酸中的溶解度低(K_(sp)<10^(-20)),并产生有毒有害的副产品。在本研究中,使用高锰酸铝[Al(MnO_(4))_(3)]氧化剂溶解硫化矿来提取金属,部分解决了这个问题。基于Aspen Hysys模型组装的Taguchi实验设计作为一种从实验到工业规模的新方案,已应用于Al(MnO_(4))_(3)氧化剂对硫化物矿石的溶解研究。最佳结果已被用作Aspen Hysys软件对该过程进行模拟和灵敏度分析的主要数据。研究了pH、停留温度、搅拌速率、停留时间、Al(MnO_(4))_(3)消耗量、浸出密度、粒度和氧压等参数对从硫化矿中萃取金属效率的影响。在优化条件下,锌、铜和铅的萃取率分别达到77%、73%和70%。

摘要：负载型双金属催化剂在很多催化反应中都有着十分重要的意义,包括选择性氧化、加氢/氢解、重整、生物质转化等反应。这一类催化剂的活性、选择性和稳定性取决于颗粒尺寸、组成和形貌等结构特性。针对Pd基负载型双金属催化剂体系,本文讨论了其结构特性,并探讨了不同合成方法对结构性质的调控机制。同时,本文阐述了Pd基催化剂在环境催化反应中的应用,包括CO氧化、烃类氧化、加氢脱氯和NO_x分解等反应。尽管在这些领域的研究取得了一定的进展,然而还需要更先进的催化技术来应对一些重大的挑战,如环境修复等。最近,在材料、光谱、显微、催化化学以及工程领域的研究人员的共同努力下,通过先进表征方法、机理研究手段的采用以及构效关系的研究,针对双金属催化剂设计的研究取得了一些新的进展。本篇综述旨在激励相关领域科学家设计合理的新型催化剂体系,以用于未来的绿色及可持续发展。