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Rare Metals 2024年第5期43卷 1999-2014页

作者： Mei Li Jing-Zhi Wang Zhi-Liang Jin school of chemistry and chemical engineering North Minzu UniversityYinchuan 750021China school of chemistry and chemical engineering Ningxia Key Laboratory of Solar Chemical Conversion TechnologyKey Laboratory for Chemical Engineering and TechnologyState Ethnic Affairs CommissionNorth Minzu UniversityYinchuan 750021China

In the process of photocatalytic water cracking,the migration rate and utilization rate of photogenerated charges determine the hydrogen evolution performance of the *** this paper,a carbon isotope superconducting material graphdiyne(GDY)is prepared by mechanical ball milling and introduced into the S-scheme heterojunction Zn_(0.5)Co_(0.5)S/MoS_(2)inorganic *** terms of hydrogen evolution kinetics,GDY acts as an electron bridge,not only accelerating the migration of photogenerated carriers but also improving the utilization of photogenerated ***,the large twodimensional layer provides more loading and anchoring points for Zn_(0.5)Co_(0.5)S/MoS_(2),which increases the number of active *** ternary composite catalyst 20%GDY/Zn_(0.5)Co_(0.5)S/MoS_(2)(20-GCSM)generates 69.94μmol of hydrogen(5 h)in triethanolamine *** is 2.97 and1.80 times higher than Zn_(0.5)Co_(0.5)S and Zn_(0.5)Co_(0.5)S/MoS_(2),*** the cyclic experiment,it still has stable hydrogen evolution performance after standing for24 h(under dark conditions).In addition,the potential mechanism of photocatalytic hydrogen evolution is demonstrated through in-situ X-ray photoelectron *** work provides a reference for further research in the field of introducing carbon materials into photocatalytic systems and improving the utilization of photogenerated charges.

关键词： Graphdiyne S-scheme heterojunction Electron transfer bridge Hydrogen production

S-scheme heterojunction in photocatalytic hydrogen production

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Journal of Materials Science & Technology 2024年第2期169卷 82-104页

作者： Teng Li Noritatsu Tsubaki Zhiliang Jin school of chemistry and chemical engineering North Minzu UniversityYinchuan 750021China Department of Applied chemistry Graduate School of EngineeringUniversity of ToyamaGofuku 3190Toyama 930-8555Japan

As an ideal secondary energy source,hydrogen has the title of clean energy and the product of its complete combustion is only water,which is not polluting to the *** hydrogen production technology is an environmentally friendly,safe,and low-cost strategy that requires only an inexhaustible amount of solar energy and water as *** paper provides a detailed and detailed review of S-scheme heterojunction photocatalysts for photocatalytic hydrogen production,mainly including TiO_(2)-based,Perovskite-based,CdS-based,Graphitic phase carbon nitride-based,COF-based graphdiyne-based,ZnO-based,and ZnIn_(2)S_(4)-based S-scheme heterojunction *** classification of S-scheme heterojunctions is ***’s more,various characterizations for direct verification of the charge migration mechanism of S-scheme heterojunctions are *** on the present study,the future potential challenges and future research trends for S-scheme heterojunctions in photocatalytic hydrogen evolution technology are pointed out,which provides feasible strategies for the development and design of S-scheme heterojunction photocatalysts in the field of photocatalytic hydrogen evolution.

关键词： S-scheme heterojunction Photocatalysis Charges migration Hydrogen evolution

Enhanced photocatalytic hydrogen production from Co-MOF/CN by nitrogen and sulfur co-doped coal-based carbon quantum dots

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Journal of Rare Earths 2024年第5期42卷 838-850,I0002页

作者： Shiyong Xu Mei Li Yijun Wang Caiyun Gao Rongsheng Xu Zhiliang jin school of chemistry and chemical engineering North Minzu UniversityYinchuan750021China Ningxia Key Laboratory of Solar chemical Conversion Technology.north minzu university.Yinchuan 750021China State Key Laboratory of National Ethnic Affairs Commission chemical Technology.north minzu university Yinchuan750021China

A novel composite photocatalyst for photocatalytic decomposition of water for hydrogen evolution was successfully synthesized by in-situ growth of nitrogen and sulfur co-doped coal-based carbon quantum dots(NSCQDs)nanoparticles on the surface of sheet cobalt-based metal-organic framework(Co-MOF)and graphitic carbon nitride(g-C_(3)N_(4),CN).The structure and properties of the obtained catalysts were systematically *** effectively broaden the absorption of Co-MOF and CN in the visible *** new composite photocatalyst has high hydrogen production activity and the hydrogen production rate reaches 6254μmol/(g·h)at pH=*** the same time,NSCQDs synergy Co-MOF/CN composites have good *** four cycles of hydrogen production,the performance remains relatively *** tran sient photocurrent response and Nyquist plot experimental results further demonstrate the improvement of carrier separation efficiency in composite *** semiconductor type(n-type semico nductor)of the single-phase catalyst was determined by the Mott-Schottky test,and the band structure was *** conductive and valence bands of CN are-0.99 and 1.72 eV,respectively,and the conduction and valence bands of Co-MOF are-1.85 and 1.33 eV,*** e mechanism of the photocatalytic reaction can be inferred,that is,Z-type heterojunction is formed between CN an d Co-MOF,and NSCQDs was used as cocatalyst.

关键词： Nitrogen and sulfur co-doped Coal-based carbon quantum dots Co-MOF CN Photocatalytic hydrogen evolution Rare earths

Self-separation ionic liquid catalyst for the highly effective conversion of H2S by α,β-unsaturated carboxylate esters under mild conditions

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Green Energy & Environment 2024年第9期9卷 1440-1448页

作者： Wenjie Xiong Xiaomin Zhang Xingbang Hu Youting Wu Key Laboratory of Mesoscopic chemistry of MOE School of Chemistry and Chemical Engineering Nanjing University The Institute of Green chemistry and engineering School of Chemistry and Chemical Engineering Nanjing University

The deep-processing utility of pure hydrogen sulfide （H2S） is a significant direction in natural gas chemical ***,a brand-new strategy of H2S conversion by a,β-unsaturated carboxylate esters into thiols or thioethers using task-specific carboxylate ionic liquids （ILs） as catalyst has been developed,firstly accomplishing the phase separation of product and catalyst without introducing the third *** can be considered as a cascade reaction in which the product selectivity can be controlled by adjusting the molar ratio of H2S to a,β-unsaturated carboxylate ***,the effects of ILs with different anions and cations,intermittent feeding operations,as well as pressure-time kinetic behaviors on cascade reaction were ***,the proposed interaction mechanism of H2S conversion using butyl acrylate catalyzed by[Emim][Ac]was revealed by DFT-based theoretical *** approach enables the self-phase separation promotion of catalyst and product and achieves 99%quantitative conversion under mild conditions in the absence of solvent,making the entire process ecologically ***-efficiency reaction activity can still be maintained after ten cycles of the ***,the good results,combined with its simplicity of operation and the high recyclability of the catalyst,make this green method environmentally friendly and *** is anticipated that this self-separation method mediated by task-specific ILs will provide a feasible strategy for H2S utilization,which will guide its application on an industrial scale.

关键词： Ionic liquid Cascade reaction Self-separation H 2 S conversion Catalysis

Preparation of bifunctional electrocatalyst by recycling heavy metal ions from wastewater using EDTAD-functionalized MOF as highly efficient adsorbent

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Rare Metals 2024年第10期43卷 5105-5116页

作者： Yue Qian Pei-Xue Fu Rui-Ze Yin Han-Ni Yang Si-Yang Li Wei-Wei Xiong Fen-Fen Zheng Jun-Hao Zhang Ai-Hua Yuan Huan Pang school of Environmental and chemical engineering Jiangsu University of Science and Technology school of chemistry and chemical engineering Yangzhou University

The recovery and subsequent reuse of heavy metal ions from industrial wastewater are crucial for promoting sustainable development,but they also presen significant *** this article,ethylenediaminetetraacetic dianhydride （EDTAD）,which possesses strong metal chelating ability,is covalently attached to MIL-101-NH2（Fe）,resulting in a significant improvement in the removal rate of heavy metal ions in ***,the recovered waste metal ions are transformed into high-performance FeNi3/NiFe2O4@NC dual-functional oxygen evolution reaction （OER） and oxygen reduction reaction （ORR） ***,FeNi3/NiFe2O4@NC exhibits outstanding OER performance,with only a264 mV overpotential at 10 mA·*** functiona theory （DFT） calculations reveal that the synergistic effect of the FeNi3/NiFe2O4@NC heterostructure can enhance conductivity,optimize the free energy of*to OH*during OER reaction,and promote catalytic *** work not only improves the removal rate of heavy metal ions but also obtains high-performance catalysts,while providing a new approach for the treatment and secondary utilization of heavy metal ion wastewater as well as the preparation of low-cost catalysts.

关键词： Bifunctional electrocatalyst Covalently modified MOF Ethylenediaminetetraacetic dianhydride Heavy metals

Silvery fullerene in Ag102 nanosaucer

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National Science Review 2024年第7期11卷 158-167页

作者： Zhi Wang Yuchen Wang Chengkai Zhang Yan-Jie Zhu Ke-Peng Song Christine M.Aikens Chen-Ho Tung Di Sun school of chemistry and chemical engineering Shandong University Department of chemistry Kansas State University

Despite the discovery of a series of fullerenes and a handful of noncarbon clusters with the typical topology of Ih-C60, the smallest fullerene with a large degree of curvature, C20, and its other-element counterparts are difficult to isolate experimentally. In coinage metal nanoclusters（NCs）, the first all-gold fullerene, Au32, was discovered after a long-lasting pursuit, but the isolation of similar silvery fullerene structures is still challenging. Herein, we report a flying saucer-shaped 102-nuclei silver NC（Ag102） with a silvery fullerene kernel of Ag32, which is embraced by a robust cyclic anionic passivation layer of（KPO4）10. This Ag32kernel can be viewed as a non-centered icosahedron Ag12encaged into a dodecahedron Ag20, forming the silvery fullerene of Ag12@Ag20. The anionic layer（KPO4）10is located at the interlayer between the Ag32kernel and Ag70shell, passivating the Ag32silvery fullerene and templating the Ag70shell. The ~tBuPhS-and CF3COO-ligands on the silver shell show a regioselective arrangement with the 60 ~tBuPhS-ligands as expanders covering the upper and lower of the flying saucer and 10 CF3COO-as terminators neatly encircling the edges of the structure. In addition, Ag102 shows excellent photothermal conversion efficiency（η） from the visible to near-infrared region（η = 67.1% ± 0.9% at 450 nm, 60.9% ± 0.9% at 660 nm and 50.2% ± 0.5% at 808 nm）, rendering it a promising material for photothermal converters and potential application in remote laser ignition. This work not only captures silver kernels with the topology of the smallest fullerene C20, but also provides a pathway for incorporating alkali metal（M） into coinage metal NCs via M-oxoanions.

关键词： silvery fullerene >Ag102 nanosaucer cyclic anionic passivation layer photothermal conversion DFT calculation

ZIF-8-functionalized polymer electrolyte with enhanced performance for high-temperature solid-state lithium metal batteries

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Rare Metals 2024年第3期43卷 984-994页

作者： Jin-Fang Zhang Yuan-Yuan Wang Xiao-Feng Li Gen-Yan Zhang Ying Li Rong Liu Sheng-Liang Hu Tuo-Ping Hu Ruth Knibbe Qing-Bing Xia school of Materials Science and engineering North University of ChinaTaiyuan030051China school of Energy and Power engineering North University of ChinaTaiyuan030051China school of chemistry and chemical engineering North University of ChinaTaiyuan030051China school of Mechanical and Mining engineering The University of QueenslandBrisbaneQLD4072Australia

Solid polymer electrolytes(SPEs)with high ionic conductivity are desirable for solid-state lithium metal batteries(SSLMBs)to achieve enhanced safety and energy *** nanofillers into a polymeric matrix to develop nanocomposite solid electrolytes(NCSEs)has become a promising method for improving the ionic conductivity of the ***,a novel ZIF-8-functionalized NCSE was prepared for high-temperature S SLMB s using an in situ radical polymerization *** is found that the ZIF-8 nanoparticles could reduce the crystallinity of polymer segments and offer a Lewis acid surface that promotes the dissociation of lithium bis(trifluoromethanesulfonyl)imide(LiTFSI)and stabilizes the TFSI^(-) anion ***,the as-prepared NCSE exhibits an outstanding ionic conductivity of 1.63×10^(-3)S·cm^(-1),an electrochem ical stability window of 5.0 V at 80℃,and excellent interface compatibility with lithium metal anode with a stable polarization over 2000 ***,the assembled SSLMBs with LiFePO_(4)cathode show dendrite-free Li-metal surface,good rate capability,and stable cycling stability with a capacity retention of 70%over 1000 cycles at a high temperature of 80℃.This work provides valuable insights into promoting the ionic conductivity of SPEs.

关键词： Lithium metal batteries Metal-organic frameworks Solid polymer electrolytes Lithium metal anode Interfacial compatibility

Carbon fiber confined mixed Ni-based crystal phases with interfacial charge redistribution induced by high bond polarity for electrochemical urea-assisted hydrogen generation

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Carbon Energy 2024年第9期6卷 292-305页

作者： Chun Yin Jiaxin Li Shuli Wang Huan Wen Fulin Yang Ligang Feng school of chemistry and chemical engineering Yangzhou UniversityYangzhouChina Guangxi Key Laboratory of Electrochemical Energy Materials School of Chemistry and Chemical EngineeringGuangxi UniversityNanningChina

Interfacial electronic structure modulation of nickel-based electrocata-lysts is significant in boosting energy-conversion-relevant urea oxidation reaction(UOR).Herein,porous carbon nanofibers confined mixed Ni-based crystal phases of Ni_(2)P and NiF_(2) are developed via fluorination and phosphorization of Ni coated carbon nanofiber(Ni_(2)P/NiF_(2)/PCNF),which possess sufficient mesoporous and optimized Gibbs adsorption free energy by mixed phase-induced charge *** novel system further reduces the reaction energy barrier and improves the reaction activity by addressing the challenges of low intrinsic activity,difficulty in active site formation,and insufficient synergism.A considerably high current density of 254.29 mA cm^(-2) is reached at 1.54 V versus reversible hydrogen electrode on a glass carbon electrode,and the cell voltage requires 1.39 V to get 10 mA cm^(-2) in hydrogen generation,with very good stability,about 190 mV less than that of the traditional water *** facile active phase formation and high charge transfer ability induced by asymmetric charge redistribution are found in the interface,where the urea molecules tend to bond with Ni atoms on the surface of heterojunction,and the rate-determining step is changed from CO_(2) desorption to the fourth H-atom *** work reveals a novel catalyst system by interfacial charge redistribution induced by high bond polarity for energy-relevant catalysis reactions.

关键词： carbon fiber nickel fluoride nickel phosphide urea oxidation water electrolysis

An integrated technology for the absorption and utilization of CO_(2)in alkanolamine solution for the preparation of BaCO_(3)in a high-gravity environment

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Chinese Journal of chemical engineering 2024年第8期72卷 117-125页

作者： Kangrui Nie Ruize Shang Fuming Miao Liuxiang Wang Youzhi Liu Weizhou Jiao Shanxi Province Key Laboratory of chemical Process Intensification and school of chemistry and chemical engineering North University of ChinaTaiyuan 030051China

In this study,an integrated technology is proposed for the absorption and utilization of CO_(2)in alkanolamine solution for the preparation of BaCO_(3)in a high-gravity *** effects of absorbent type,high-gravity factor,gas/liquid ratio,and initial BaCl2concentration on the absorption rate and amount of CO_(2)and the preparation of BaCO_(3)are *** results reveal that the absorption rate and amount of CO_(2)follow the order of ethyl alkanolamine(MEA)>diethanol amine(DEA)>N-methyldiethanolamine(MDEA),and thus MEA is the most effective absorbent for CO_(2)*** absorption rate and amount of CO_(2)under high gravity are higher than that under normal ***,the absorption rate at 75 min under high gravity is approximately 2 times that under normal *** is because the centrifugal force resulting from the high-speed rotation of the packing can greatly increase gas-liquid mass transfer and *** particle size of BaCO_(3)prepared in the rotating packed bed is in the range of 57.2—89 nm,which is much smaller than that prepared in the bubbling reactor(>100.3 nm),and it also has higher purity(99.6%)and larger specific surface area(14.119 m^(2)·g^(-1)).It is concluded that the high-gravity technology has the potential to increase the absorption and utilization of CO_(2)in alkanolamine solution for the preparation of BaCO_(3).This study provides new insights into carbon emissions reduction and carbon utilization.

关键词： High-gravity technology Wet absorption CO_(2)capture Enhanced mass transfer CO_(2)utilization Barium carbonate

Precision design of Ti sites for unprecedented catalytic performance

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National Science Review 2024年第7期11卷 67-68页

作者： Haoquan Zheng Shunai Che Key Laboratory of Applied Surface and Colloid chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University school of chemistry and chemical engineering Shanghai Jiao Tong University

In 1983, Taramasso et al. incorporated titanium(Ti) into porous silica frameworks to endow Ti sites with catalytic oxidation ability [1]. Nowadays, catalytic oxidation reactions using titanium silicate materials have ...

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