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Vacancy defect MoSeTe embedded in n and F co-doped carbon skeleton for high performance sodium ion batteries and hybrid capacitors

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Journal of Energy Chemistry 2024年第3期90卷 652-664,I0014页

作者： Dehui Yang Wentao Guo Fei Guo Jiaming Zhu Gang Wang Hui Wang Guanghui Yuan Shenghua Ma Beibei Wang State Key Laboratory of Photon-Technology in Western China Energy International Collaborative Center on Photoelectric Technology and Nano Functional MaterialsInstitute of Photonics&Photon-TechnologyNorthwest UniversityXi’an 710127ShannxiChina Key Laboratory of Synthetic and natural Functional Molecule Chemistry(Ministry of Education) College of Chemistry&Materials ScienceNorthwest UniversityXi’an 710127ShannxiChina School of Chemistry and Chemical Engineering Ankang Research Centre of New Nano-materials Science and TechnologyShaanxi University Innovation Research Institute of Advanced Energy Storage Materials and Battery Technology for Future IndustrializationAnkang UniversityAnkang 725000ShannxiChina

Sodium-ion batteries(SIBs) and hybrid capacitors(SIHCs) have garnered significant attention in energy storage due to their inherent advantages,including high energy density,cost-effectiveness,and enhanced ***,developing high-performance anode materials to improve sodium storage performa nce still remains a major ***,a facile one-pot method has been developed to fabricate a hybrid of MoSeTe nanosheets implanted within the n,F co-doped honeycomb carbon skeleton(MoSeTe/n,F@C).Experimental results demonstrate that the incorporation of large-sized Te atoms into MoSeTe nanosheets enlarges the layer spacing and creates abundant anion vacancies,which effectively facilitate the insertion/extraction of na^(+) and provide numerous ion adsorption sites for rapid surface capacitive ***,the heteroatoms n,F co-doped honeycomb carbon skeleton with a highly conductive network can restrain the volume expansion and boost reaction kinetics within the *** anticipated,the MoSeTe/n,F@C anode exhibits high reversible capacities along with exceptional cycle *** coupled with na_(3)V_(2)(PO_(4))_(3)@C(nVPF@C) to form SIB full cells,the anode delivers a reversible specific capacity of 126 mA h g^(-1) after 100 cycles at 0.1 A g^(-1).Furthermore,when combined with AC to form SIHC full cells,the anode demonstrates excellent cycling stability with a reversible specific capacity of50 mA h g^(-1) keeping over 3700 cycles at 1.0 A g^(-1).In situ XRD,ex situ TEM characterization,and theoretical calculations(DFT) further confirm the reversibility of sodium storage in MoSeTe/n,F@C anode materials during electrochemical reactions,highlighting their potential for widespread practical *** work provides new insights into the promising utilization of advanced transition metal dichalcogenides as anode materials for na^(+)-based energy storage devices.

关键词： MoSeTe n F co-doped honeycomb carbon skeleton Sodium-ion batteries Sodium-ion hybrid capacitor

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Li-promoted C3n4 catalyst for efficient isomerization of glucose into fructose at 50℃ in water

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Green Energy & Environment 2024年第9期9卷 1419-1426页

作者： Wang Liu Yanfei Zhang Mengya Sun Xinpeng Zhao Shenggang Li Xinqing Chen Liangshu Zhong Lingzhao Kong CAS Key Laboratory of Low-Carbon Conversion Science and Engineering Shanghai Advanced Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences School of Physical Science and Technology Shanghai Tech University School of Environmental Science and Engineering Suzhou University of Science and Technology

Efficient and selective glucose-to-fructose isomerization is a crucial step for production of oxygenated chemicals derived from sugars,which is usually catalyzed by base or Lewis acid heterogeneous ***,high yield and selectivity of fructose cannot be simultaneously obtained under mild conditions which hamper the scale of application compared with enzymatic ***,a Li-promoted C3n4catalyst was exploited which afforded an excellent fructose yield （40.3 wt%） and selectivity （99.5%） from glucose in water at 50~oC,attributed to the formation of stable Li–n bond to strengthen the basic sites of ***,the so-formed n6–Li–H2O active site on Li–C3n4catalyst in aqueous phase changes the local electronic structure and strengthens the deprotonation process during glucose isomerization into *** superior catalytic performance which is comparable to biological pathway suggests promising applications of lithium containing heterogeneous catalyst in biomass refinery.

关键词： Glucose Fructose Isomerization Li–C 3 n 4 Density functional theory calculations

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Advanced oxidation via the synergy of C-defective/C-O band modified ultrathin porous g-C3n4 and PMS for efficient photothermal degradation of bisphenol pollutants and lignin derivatives

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Green Energy & Environment 2024年第7期9卷 1159-1170页

作者： Liquan Jing Meng Xie Yuanguo Xu Chun Tong Xia Du Heng Zhao na Zhong Huaming Li Jinguang Hu School of Chemistry and Chemical Engineering Jiangsu University Department of Chemical and Petroleum Engineering University of Calgary School of Pharmacy Jiangsu University School of Material Science & Chemical Engineering Harbin University of Science and Technology Institute for Energy Research Jiangsu University

This work uses thermal polymerization of urea nitrate, oxyacetic acid and urea as the raw material to prepare ultra-thin porous carbon nitride with carbon defects and C-O band（OA-Un-Cn）. Density functional theory（DFT） calculations showed OA-Un-Cn had narrower band gap,faster electron transport and a new internal construction electric field. Additionally, the prepared OA-Un-Cn significantly enhanced photocatalytic activation of peroxymonosulfate（PMS） due to enhanced light absorption performance and faster electron overflow. As the result, the OA-Un-Cn/PMS could entirely degrade bisphenol A（BPA） within 30 min, where the photodegradation rate was 81.8 and 7.9 times higher than that of g-C3n4and OA-Un-Cn, respectively. Beyond, the OA-Un-Cn/PMS could likewise degrade other bisphenol pollutants and sodium lignosulfonate efficiently. We suggested possible photocatalytic degradation pathways accordingly and explored the toxicity of its degradation products. This work provides a new idea on the development of advanced photocatalytic oxidation processes for the treatment of bisphenol pollutants and lignin derivatives, via a metal-free photothermal-catalyst.

关键词： Photothermal-catalytic G-C 3 n 4 Peroxymonosulfate Bisphenol Sodium lignosulfonate

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Tuning interface mechanism of FeCo alloy embedded n,S-codoped carbon substrate for rechargeable Zn-air battery

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Journal of Energy Chemistry 2024年第6期93卷 400-410,I0010页

作者： Hui Chang Lulu Zhao Shan Zhao Zong-Lin Liu Peng-Fei Wang Ying Xie Ting-Feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004HebeiChina

The interface mechanism between catalyst and carbon substrate has been the focus of *** this paper,the FeCo alloy embedded n,S co-doped carbon substrate bifunctional catalyst(FeCo/S-nC)is obtained by a simple one-step pyrolysis *** experimental results and density functional theory(DFT)calculation show that the formation of FeCo alloy is conducive to promoting electron transfer,and the introduction of S atom can enhance the interaction between FeCo alloy and carbon substrate,thus inhibiting the migration and agglomeration of particles on the surface of carbon *** FeCo/SnC catalysts show outstanding performance for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).FeCo/S-nC shows a high half-wave potential(E_(1/2)=0.8823 V)for ORR and a low overpotential at 10 mA cm^(-2)(E_(j=10)=299 mV)for *** addition,compared with Pt/C+RuO_(2) assembled Zn-air battery(ZAB),the FeCo/S-nC assembled ZAB exhibits a larger power density(198.8 mW cm^(-2)),a higher specific capacity(786.1 mA h g_(zn)~(-1)),and ultra-stable cycle *** results confirm that the optimized composition and the interfacial interaction between catalyst and carbon substrate synergistically enhance the electrochemical performance.

关键词： FeCo alloy n S co-doped carbon DFT calculation Zn-air batteries Interfacial interaction

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Interfacial growth of n,S-codoped mesoporous carbon onto biomass-derived carbon for superior potassium-ion storage

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nano Research 2024年第4期17卷 2619-2627页

作者： na Huang Cheng Tang Hao Jiang Jie Sun Aijun Du Haijiao Zhang Institute of nanochemistry and nanobiology School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China School of Chemistry and Physics and Centre for Materials Science Queensland University of TechnologyBrisbaneQLD 4001Australia Shanghai Engineering Research Center of Hierarchical nanomaterials Frontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China

Carbonaceous materials have been recognized as one of the most promising anode materials for potassium-ion batteries(PIBs)due to their abundant raw materials,controllable structure,superior conductivity,and good chemical ***,the large radius of K ions and the low potassium content of intercalation compounds result in the sluggish storage kinetics and low reversible capacity of carbon *** this work,we present a unique heteroatom-doped carbon composite(denoted as nS-MC/SC)through a facile interfacial assembly route and simple heat-treatment process,where nS-MC is well grafted onto the biomass-derived spore carbon(SC).This unique structural design endows it with abundant mesoporous channels,expanded layer spacing,and highly doped n and *** these merits,the nS-MC/SC anode in PIBs exhibits a high reversible capacity of 350.4 mAh·g^(-1) at 100 mA·g^(-1) after 300 cycles,and an outstanding cycling ***,in-situ Raman spectra further verify the high reversibility of K ions insertion/***,theoretical simulations also reveal that the n,S dual-doping is an efficient approach for improving the potassium-ion storage performance of nS-MC/SC.

关键词： mesoporous carbon(MC) biomass-derived carbon(BC) n S co-doping interfacial assembly potassium-ion batteries(PIBs)

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Bimetallic Coni single atoms supported on three-dimensionally ordered mesoporous chromia: highly active catalysts for n-hexane combustion

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Green Energy & Environment 2024年第7期9卷 1122-1137页

作者： Xiuqing Hao Yuxi Liu Jiguang Deng Lin Jing Jia Wang Wenbo Pei Hongxing Dai Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution Control Key Laboratory of Advanced Functional Materials Education Ministry of China Laboratory of Catalysis Chemistry and Nanoscience Department of Chemical Engineering Faculty of Environment and Life Beijing University of Technology

Developing the alternative supported noble metal catalysts with low cost,high catalytic efficiency,and good resistance toward carbon dioxide and water vapor is critically demanded for the oxidative removal of volatile organic compounds （VOCs）.In this work,we prepared the mesoporous chromia-supported bimetallic Co and ni single-atom （Co1ni1/meso-Cr2O3） and bimetallic Co and ni nanoparticle (ConPninP/mesoCr2O3) catalysts adopting the one-pot polyvinyl pyrrolidone （PVP）-and polyvinyl alcohol （PVA）-protecting approaches,*** results indicate that the Co1ni1/meso-Cr2O3catalyst exhibited the best catalytic activity for n-hexane (C6H14) combustion (T50%and T90%were 239 and 263℃ at a space velocity of 40,000 mL g-1h-1;apparent activation energy and specific reaction rate at 260℃ were 54.7 kJ mol-1and 4.3×10-7mol g-1cats-1,respectively),which was associated with its higher (Cr5++Cr6+) amount,large n-hexane adsorption capacity,and good lattice oxygen mobility that could enhance the deep oxidation of n-hexane,in which ni1was beneficial for the enhancements in surface lattice oxygen mobility and low-temperature reducibility,while Co1preferred to generate higher contents of the high-valence states of chromium and surface oxygen species as well as adsorption and activation of n-hexane.n-Hexane combustion takes place via the Mars van Krevelen（MvK） mechanism,and its reaction pathways are as follows:n-hexane→olefins or 3-hexyl hydroperoxide→3-hexanone,2-hexanone or 2,5-dimethyltetrahydrofuran→2-methyloxirane or 2-ethyl-oxetane→acrylic acid→COx→CO2and H2O.

关键词： Three-dimensional ordered mesoporous chromium oxide Supported bimetallic single-atom catalyst Cobalt−nickel single atoms n -Hexane combustion Catalytic reaction mechanism

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松辽盆地古龙页岩油储层干酪根的有机元素组成及其n元素的地球化学意义

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地质学报 2024年第6期98卷 1840-1866页

作者：何文渊白雪峰钟建华赵莹孙宁亮中国石油国际勘探开发有限公司北京100032 多资源协同陆相页岩油绿色开采全国重点实验室黑龙江大庆163002 东北大学秦皇岛分校资源与材料学院河北秦皇岛066004 海洋油气勘探国家工程研究中心北京100028 中国石油大学(华东)地球科学与技术学院山东青岛266580 东北大学海洋工程研究院河北秦皇岛066004

对青山口组页岩的317件干酪根样品进行了工业、元素及能谱分析,对样品进行两次校正,引入合理评价干酪根C、H、O、n的指标C_(cc)、H_(cc)、O_(cc)、n_(cc)概念。研究结果显示:古龙凹陷青山口组泥页岩Ⅰ型干酪根具有较高的H_(cc)、n_(cc)... 详细信息

对青山口组页岩的317件干酪根样品进行了工业、元素及能谱分析,对样品进行两次校正,引入合理评价干酪根C、H、O、n的指标C_(cc)、H_(cc)、O_(cc)、n_(cc)概念。研究结果显示:古龙凹陷青山口组泥页岩Ⅰ型干酪根具有较高的H_(cc)、n_(cc)和很低的O_(cc),而Ⅲ型干酪根的O_(cc)则较高,H_(cc)、n_(cc)较低。Ⅱ干酪根的H_(cc)和n_(cc)低于Ⅰ型干酪根,而高于Ⅲ型干酪根;Ⅱ干酪根的O_(cc)高于Ⅰ型和Ⅲ型干酪根。n_(cc)主要以有机官能团(nH3+)方式存在的于黏土的F-F纳缝中,而不是存在于黏土晶胞间的无机n(nH4)。微量元素研究表明,古龙青山口组页岩油储层沉积时经历了十几次干旱咸水环境,因为咸水环境有利于形成黏土的F-F凝聚,使发育有nH3+官能团的有机质被吸附在黏土片的F-F纳缝之间。随着深度的增加,n_(cc)的克分子量增加速率是C_(cc)克分子量增加速率的0.96~2.04倍,在青山口组1300~2550m深度内青一段干酪根的n_(cc)含量明显比上部的干酪根相对高,主要原因与下部青一段藻类较富集有关,其次与H_(cc)的快速脱落而使n_(cc)相对富集有关,间接地揭示了青一段生烃能力较上部强。通过研究n_(cc)可以间接地知道古环境中的咸度、黏土的孔隙类型及其干酪根的来源。经过论证,O_(cc)和n_(cc)越大,页岩的封存性也就越好,含油气性也越好。因此,O_(cc)和n_(cc)值可以作为判别页岩油发育程度的指标。古龙页岩油储层的n_(cc)和O_(cc)的研究可以提供一些重要的沉积环境、地球化学、黏土结构、干酪根有机质类型和成岩成储及成藏等信息,应该受到重视。

关键词：黏土干酪根有机元素 n 页岩油古龙凹陷

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A novel one-dimensional Co-phenylmercaptotetrazole MOF templated fabrication of n,S co-doped Co_(9)S_(8)@nSC porous nanotubes for oxygen evolution reaction

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Science China Materials 2024年第10期67卷 3206-3214页

作者： Peixue Fu Ruize Yin Shitan Yan Yue Qian Qin Cheng Hanni Yang Siyang Li Weiwei Xiong Junhao Zhang Aihua Yuan Ting Bian School of Environmental&Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Energy&Power Jiangsu University of Science and TechnologyZhenjiang 212003China nanjing Ceprei Industrial Technology Research Institute Co. Ltd.Nanjing 211800China

In this work,we report a novel one-dimensional metal-organic framework(MOF)templated for the synthesis of transition metal sulfides with excellent oxygen evolution reaction(OER)performance via a self-sulfidation process,eliminating the need for additional sulfur *** pyrolysis,MOFs containing Co ions as the metal nodes and 1-phenyl-5-mercaptotetrazole(PMTA)as the ligand were transformed to Co_(9)S_(8)nanoparticles,which were encapsulated in a nitrogen and sulfur dual-doped carbon(Co_(9)S_(8)@nSC)***,PMTA,as a ligand,possesses the unique advantage of forming porous coordination polymers with a wide range of metals(e.g.,Fe,ni,and Cu),enabling the versatile synthesis of transition metal sulfide ***,when served as the electrocatalyst for OER,the n,S co-doped Co_(9)S_(8)@nSC porous nanotubes exhibited excellent OER performance with the overpotential of only 248 mV at 10 mA cm^(−2)and long-term *** works provide new insights and inspiration for the rational design and development of non-precious metal-based sulfides with practical potential applications.

关键词： electrocatalysts transition metal sulfides n S codoped carbon composites oxygen evolution reaction one-dimensional metal-organic frameworks

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Ti foam-ni-Sn/Bi电极制备及其电还原nO-n的性能

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化工进展 2024年

作者：张海兵刘云遏黄志昊沈蓉振华石油控股有限公司中国石油大学(北京)克拉玛依校区工学院

水体中硝酸盐氮(nO3--n)的污染不仅会造成水生态环境的恶化，还对人类健康构成严重威胁，已引起世界广泛关注。本文通过在泡沫钛板(Ti foam)上化学镀ni-电沉积镀Sn/Bi的方法制备出一种新型含有中间层的Ti foam-ni-Sn/Bi电极。SEM、XRD... 详细信息

水体中硝酸盐氮(nO3--n)的污染不仅会造成水生态环境的恶化，还对人类健康构成严重威胁，已引起世界广泛关注。本文通过在泡沫钛板(Ti foam)上化学镀ni-电沉积镀Sn/Bi的方法制备出一种新型含有中间层的Ti foam-ni-Sn/Bi电极。SEM、XRD以及电极性能特性测试结果表明ni以及Sn/Bi被分别成功沉积到了Ti基底和ni中间层上，并具备较大的电化学活性面积和较多的活性位点。以制备的Ti foam-ni-Sn/Bi电极为阴极、Ti/RuO2-Ir2O3电极为阳极构建电还原体系，对水中nO3--n进行电还原处理。实验结果表明：在初始nO3--n浓度为150 mg/L，电流密度为20 mA/cm2，pH为3，搅拌速率600 r/min，板间距为3 cm时，电还原6 h后nO3--n去除率达87.43%，氮气(n2)选择性为90.73%。因此，本方法制备的Ti foam-ni-Sn/Bi电极在nO3--n电还原过程中表现出较好的还原性能和较高的n2选择性。

关键词： Ti foam-ni-Sn/Bi电极 nO -n 电还原 n 选择性

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煤系致密粉砂岩n泡沫压裂特性试验研究

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煤炭学报 2024年

作者：肖贺成梁卫国李文达王在勇柴望阳太原理工大学原位改性采矿教育部重点实验室太原理工大学矿业工程学院

低用水量、低储层伤害、高返排效率的泡沫压裂是低压、低渗、强水敏煤系储层开发的潜在技术之一，但相关研究与应用主要聚焦于泡沫稳定性与流变性能优化，其压裂增渗特征研究不足。鉴于此，本试验开展了不同泡沫干度（泡沫中气体体积百... 详细信息

低用水量、低储层伤害、高返排效率的泡沫压裂是低压、低渗、强水敏煤系储层开发的潜在技术之一，但相关研究与应用主要聚焦于泡沫稳定性与流变性能优化，其压裂增渗特征研究不足。鉴于此，本试验开展了不同泡沫干度（泡沫中气体体积百分比）的n2泡沫、清水与n2气体压裂煤系致密粉砂岩的裂缝起裂扩展规律对比研究，并评价了裂缝面形态和导流能力特征。试验结果表明：①泡沫为气液混合物，其压缩性介于清水和n2气体之间，且泡沫干度越高，压缩性越强，压裂增压时间越长；②泡沫呈现高黏、低滤失特性，其岩石破裂压力高于清水和n2气体，且岩石破裂压力与泡沫干度正相关，泡沫干度越高，岩石破裂压力越高；③压裂液排量影响岩石破裂压力，40 mL/min和20 mL/min排量下，90%干度泡沫的破裂压力分别高于清水15.66和6.08 MPa；④泡沫压裂的水力输入能量和声发射能量高于清水，且随着泡沫干度升高，其破裂时的最大和累积声发射能量均越大；⑤纯n2气体压裂致密粉砂岩的水力输入能量最高，但主要用于气体压缩，其破裂时的声发射能量最低，压后重注压力高，造缝能力弱。泡沫干度提高，无因次裂缝面积和粗糙度均增加，进而泡沫压裂裂缝导流能力高于清水和n2气体。强水敏储层泡沫流体可替代常规水基高黏压裂液，形成粗糙度和面积更大的高导流裂缝，可为强水敏煤系储层高效压裂增渗开采提供理论指导。

关键词：煤系储层 n 泡沫压裂泡沫干度裂缝形态导流能力

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