检索结果-内蒙古大学图书馆

Sulfur-doped g-C_(3)N_(4)/g-C_(3)N_(4) isotype step-scheme heterojunction for photocatalytic H_(2) evolution

Journal of Materials Science & Technology 2022年第23期118卷 15-24页

作者： Jizhou Jiang Zhiguo Xiong Haitao Wang Guodong Liao Saishuai Bai Jing Zou Pingxiu Wu Peng Zhang Xin Li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Semiconductor Electronic Special Gas of Hubei Engineering Research Center Jingzhou 434000China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China State Centre for International Cooperation on Designer Low-Carbon&Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China

The rational fabrication of an efficient heterojunction is critical to the enhancement of photocatalytic hydrogen(H_(2)) evolution ***,a new-fashioned graphitic-carbon nitride(g-C_(3) N_(4)) based isotype step-scheme(S-scheme) heterojunction composed of sulfur-doped and sulfur-free active sites is developed by liquid sulfur-mediation of exfoliated g-C_(3) N_(4).Particularly,the liquid sulfur not only contributes to the full contact between sulfur species and exfoliated g-C_(3) N_(4),but also creates sulfur-doping and abundant pores,since self-gas foaming effect of sulfur ***,the S-doped and S-free active sites located in the structural unit of C_(3) N_(4) jointly construct a typical sulfur-doped g-C_(3) N_(4)/g-C_(3) N_(4) isotype step-scheme heterojunction,which endows highly efficient photocatalytic reaction ***,the optimal sample possesses remarkable photocatalytic H_(2) evolution activity(5548.1 μmol g^(-1) h^(-1)) and robust *** importantly,the investigation will open up a new path for the exploration of other carbon-based isotype S-scheme heterojunctions.

关键词： Liquid sulfur S-doping g-C_(3)N_(4) Isotype S-scheme heterojunction Photocatalytic H_(2) evolution

来源：评论

学校读者我要写书评

暂无评论

Utilizing Ca3(PO4)2 and calcium superphosphate fertilizer for the passage of heavy metals in coal gangue: Mechanical insights and efficiency evaluation

引用

Environmental engineering Research 2025年第4期30卷

作者： Zhang, Hualin Bai, Wenlong Tian, Shaojing Zhao, Mengfei Yang, Youming Jiang, Xiaoliang Li, Tinggang School of Metallurgical engineering Jiangxi University of Science and Technology Ganzhou341099 China Key Laboratory of Rare Earth Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths Jiangxi Institute of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341003 China CAS Key Laboratory of Green Process and Engineering Innovation Academy for Green Manufacture National Engineering Research Center of Green Recycling for Strategic Metal Resources Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Inner Mongolia Dongyuan Environmental Protection Technology Co. Ltd Ordos014300 China State Key Laboratory of Biochemical Engineering Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

Coal gangue is a typical industrial waste, which will bring environmental challenges and resource depletion when piled up in large quantities, and heavy metal pollution is a prominent problem. In this study, Ca3(PO4)2 and calcium superphosphate fertilizer (CSF) were utilized to passivate coal gangue at different pollution levels, and its passivation mechanism was discussed. The results show that both Ca3(PO4)2 and CSF can effectively passivate coal gangue and effectively reduce moderate or high levels of coal gangue pollution to a slight or clean level. The passivation effect of CSF is slightly better than that of Ca3(PO4)2. Through characterization of coal gangue before and after passivation and simulation with Visual MINTEQ and PHREEQC software, it is found that Ca3(PO4)2 can provide PO3 2−, while CSF releases HPO3 –, which is ionized to generate more PO3 2−, and finally forms insoluble or slightly soluble phosphate with heavy metals. Leaching experiments show that the treated samples contain obviously more stable heavy metal components, and the leaching risk is lower than that of untreated coal gangue. In summary, this method proves its effectiveness in fixing heavy metals in coal gangue and provides an effective method for the harmless treatment of coal gangue. © 2025, Korean Society of Environmental Engineers. All rights reserved.

关键词： Coal tailings

来源：评论

学校读者我要写书评

暂无评论

Liquid chemical looping gasification of biomass:Thermodynamic analysis on cellulose

引用

Chinese Journal of Chemical engineering 2021年第9期34卷 79-88页

作者： Wei Guo Bo Zhang Jie Zhang Zhiqiang Wu Yaowu Li Bolun Yang Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021China Nuclear Power Institute of China Chengdu 610213China

Liquid chemical looping technology is an innovation of chemical looping conversion *** liquid metal oxide as the oxygen carrier during gasification process could prolong the service life of oxygen carrier and improve the process *** this paper,based on Gibbs minimum free energy method,the thermodynamic characteristics of biomass liquid chemical looping gasification were *** and lignin,the main components of biomass,were taken as the research *** oxide and antimony oxide were selected as liquid oxygen *** results showed that when the temperature increased from 600℃to 900℃,the output of H_(2)and CO in the products of cellulose gasification increased from 0.5 and 0.3 kmol to 1.3 and 2.6 kmol *** ratios of oxygen carriers to gasification raw materials had the best molar *** addition of steam in the system was beneficial to the increase of H_(2)content and the increase of H_(2)/CO molar ***_(2)O_(3)and Sb_(2)O_(3)with different mass ratios were used as mixed oxygen *** simulation results showed that the gasification temperature of biomass with different mixed oxygen carriers had the same equilibrium trend *** could be seen from the results of product distribution that the influence of the mixing ratio of Bi_(2)O_(3)and Sb_(2)O_(3)on gas product distribution could be *** results could provide simulation reference and data basis for subsequent research on liquid chemical looping gasification.

关键词： Liquid chemical looping conversion Biomass Thermodynamics Product distribution Oxygen carrier Simulation

来源：评论

学校读者我要写书评

暂无评论

晶体石墨炔的最新研究进展与挑战

引用

Science China Materials 2024年第3期67卷 729-751页

作者：刘心康赵亚松杜江王丹 Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

石墨炔(GYs)是一种新型碳同素异形体,由sp和sp^(2)杂化碳原子组成.其中,石墨双炔(GDY)是目前研究和关注度最广泛的材料.其独特的sp杂化、均匀的孔隙和高度共轭的结构带来了优良的电子、光学和力学特性,其被广泛应用于电子器件、储能和... 详细信息

石墨炔(GYs)是一种新型碳同素异形体,由sp和sp^(2)杂化碳原子组成.其中,石墨双炔(GDY)是目前研究和关注度最广泛的材料.其独特的sp杂化、均匀的孔隙和高度共轭的结构带来了优良的电子、光学和力学特性,其被广泛应用于电子器件、储能和转换、催化、气体分离、海水淡化等领域.然而,GDY材料仍然面临着诸多挑战,包括高结晶GDY的合成和快速无损的表征方法.本文就高结晶度GDY的设计、合成和结构表征进行了综述.本文还描述了GDY在各个领域的应用,为高度均匀的单晶GDY材料带来新的机遇.

关键词： crystalline graphdiyne controlled synthesis energy conversion energy storage

来源：评论

学校读者我要写书评

暂无评论

Tandem electrocatalytic-catalytic conversion of nitrate and waste polylactic acid to alanine

引用

Journal of Energy Chemistry 2025年 108卷 694-702页

作者： Teng, Xue Liang, Shaozhen Shi, Kai Chen, Lisong Shi, Jianlin State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical Processes Engineering Center for Sustainable Carbon School of Chemistry and Molecular Engineering East China Normal University Shanghai200062 China State Key Laboratory of High Performance Ceramics and Superfine Microstructures Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai200050 China Institute of Eco-Chongming Shanghai202162 China

Herein, a tandem electrocatalytic-catalytic method is employed to produce valuable alanine from nitrate and waste polylactic acid (PLA). Initially, two strategies are proposed to enhance the performance of electrocatalytic NO3− reduction reaction (NO3−RR): optimizing NO3− adsorption and accelerating water dissociation by modulating the cathode electrocatalyst. Fe-regulated Co nanosheets (Fe0.33-Co(OH)2 NSs) have been developed as an efficient electrocatalyst, which demonstrate a remarkable Faradaic efficiency (FE) of 98.2%, with a corresponding yield rate of 10.7 mg h−1 cm−2 for NO3−RR to NH3 at −0.1 V vs. RHE. Additionally, ∼95% FEs of NH3 at −200 mA cm−2 have been maintained for >430 h in the alkaline solution. Subsequently, in situ technologies have been utilized to elucidate the NO3−RR pathways, the structure transformation of the electrocatalysts, and the effects of Fe-induced work function reduction and electron enrichment at Co sites on electrocatalytic activity. Finally, alanine is synthesized by using PLA and the generated NH3 as the raw reactants on the Ru/TiO2 catalyst, achieving maximum yield and selectivity of 81.3% and 91.8%, respectively, which provides a novel approach to utilize the nitrogen resource and mitigate plastic pollution. © 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

Novel membrane separation technologies and membrane processes

引用

Frontiers of Chemical Science and engineering 2021年第4期15卷 717-719页

作者： Yanying Wei Gongping Liu Jianquan Luo Libo Li Zhi Xu School of Chemistry&Chemical Engineering South China University of TechnologyGuangzhou 510640China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringUniversity of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100190China State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Membrane-based separation technologies have received increasing attention attributing to lots of advantages such as the low energy consumption,easy operation,and environmental *** recent years,the emergence of novel two-dimensional(2D)materials,such as graphene,provides a new opportunity for membrane ***,Frontiers of Chemical Science and engineering(FCSE),one of the transactions of Chinese Academy of engineering,organized this Special Issue aiming to illustrate some of the exciting progresses and achievements in the relevant research fields.

关键词： development. separation friend

来源：评论

学校读者我要写书评

暂无评论

Synthesis of pH-responsive triazine skeleton nano-polymer composite containing AIE group for drug delivery

引用

Frontiers of Materials Science 2021年第1期15卷 113-123页

作者： Yifan ZHANG Xueying PENG Xinbo JING Lin CUI Shengchao YANG Jianning WU Guihua MENG Zhiyong LIU Xuhong GUO School of Chemistry and Chemical Engineering Shihezi University/Key Laboratory of Green Process for Chemical Engineering/Key Laboratory for Chemical Materials of Xinjiang Uygur Autonomous Region/Engineering Center for Chemical Materials of Xinjiang BingtuanShihezi UniversityShihezi 832003China School of Medicine Shihezi UniversityShihezi 832003China State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai 200237China

We exploited a unique porous structure of the nano-covalent triazinepolymer(NCTP)containing aggregation-induced emission(AlE)group to achievecontrolled release and drug tracking in tumor acidic *** wassynthesized by the Friedel-Crafts alkylation and the McMurry coupling *** notonly had strong doxorubicin(DOX)-loading capacity due to its high specific surface areaand large pore volume,but also showed the significant cumulative drug release as aresult of the pH response of triazine *** was induced luminescence aftermass accumulation near tumor ***,it had excellent biocompatibility andobvious antineoplastic *** results demonstrate that NCTP as a utility-type drugcarrier provides a new route for designing the multi-functional drug delivery platform.

关键词： triazine skeleton structure pH response aggregation-induced emission drug dolivery

来源：评论

学校读者我要写书评

暂无评论

Ionic liquids for CO_(2) electrochemical reduction

引用

Chinese Journal of Chemical engineering 2021年第3期34卷 75-93页

作者： Fangfang Li Francesca Mocci Xiangping Zhang Xiaoyan Ji Aatto Laaksonen Energy Engineering Division of Energy ScienceLuleåUniversity of TechnologyLuleå97187Sweden Department of Chemical and Geological Sciences University of CagliariMonserrato 09042Italy CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Division of Physical Chemistry Department of Materials and Environmental ChemistryArrhenius LaboratoryStockholm UniversityStockholm 10691Sweden Center of Advanced Research in Bionanocojugates and Biopolymers “Petru Poni”Institute of Macromolecular ChemistryIasi 700469Romania State Key Laboratory of Materials-Oriented and Chemical Engineering Nanjing Tech UniversityNanjing 211816China

Electrochemical reduction of CO_(2) is a novel research field towards a CO_(2)-neutral global economy and combating fast accelerating and disastrous climate changes while finding new solutions to store renewable energy in value-added chemicals and *** liquids(ILs),as medium and catalysts(or supporting part of catalysts)have been given wide attention in the electrochemical CO_(2) reduction reaction(CO_(2) RR)due to their unique advantages in lowering overpotential and improving the product selectivity,as well as their designable and tunable *** this review,we have summarized the recent progress of CO_(2) electro-reduction in IL-based electrolytes to produce higher-value *** then have highlighted the unique enhancing effect of ILs on CO_(2) RR as templates,precursors,and surface functional moieties of electrocatalytic ***,computational chemistry tools utilized to understand how the ILs facilitate the CO_(2) RR or to propose the reaction mechanisms,generated intermediates and products have been discussed.

关键词： Carbon dioxide Ionic liquids Electro-reduction Electrolyte Electrocatalytic material Computer simulation

来源：评论

学校读者我要写书评

暂无评论

Improving stability of MXenes

引用

Nano Research 2022年第7期15卷 6551-6567页

作者： Jizhou Jiang Saishuai Bai Jing Zou Song Liu Jyh-Ping Hsu Neng Li Guoyin Zhu Zechao Zhuang Qi Kang Yizhou Zhang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyHunan UniversityChangsha 410082China Department of Chemical Engineering “National Taiwan University”Taipei 10617TaiwanChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Institute of Advanced Materials and Flexible Electronics(IAMFE) School of Chemistry and Materials ScienceNanjing University of Information Science&TechnologyNanjing 210044China Department of Chemistry Tsinghua UniversityBeijing 100084China Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai 200240China

Due to their superior hydrophilicity and conductivity,ultra-high volumetric capacitance,and rich surface-chemistry properties,MXenes exhibit unique and excellent performance in catalysis,energy storage,electromagnetic shielding,and life *** they are derived from ceramics(MAX phase)through etching,one of the challenges in MXenes preparation is the inevitable exposure of metal atoms on their surface and embedding of anions and *** the as-obtained MXenes are always in a thermodynamically metastable state,they tend to react with trace oxygen or oxygen-containing groups to form metal oxides or degrade,leading to sharply declined activity and impaired ***,improving the stability of MXenesbased materials is of practical significance in relevant ***,there lacks a comprehensive review in the literature on relevant *** help promote the wide applications of MXenes,we review from the following aspects:(i)insights into the factors affecting the stability of MXenes-based materials,including oxidation of MXenes flakes,stability of MXenes colloidal solutions,and swelling and degradation of MXenes thin-film,(ii)strategies for enhancing the stability of MXenes-based materials by optimizing MAX phase synthesis and modifying the MXenes preparation,and(iii)techniques for further increasing the stability of freshly prepared MXenes-based materials via controlling the storage conditions,and forming shielding on the surface and/or edge of MXenes ***,some outlooks are proposed on the future developments and challenges of highly active and stable *** aim to provide guidance for the design,preparation,and applications of MXenes-based materials with excellent stability and activity.

关键词： MXenes stability oxidation swelling and degradation shielding strategies

来源：评论

学校读者我要写书评

暂无评论

Phosphorus-Modulated Surface Active Center Reconstruction in Cerium Oxide for Polyols Conversion into Carbonates

SSRN

引用

SSRN 2024年

作者： Wang, Jie Huang, Jielin Dong, Li Chen, Songsong Zhang, Junping Zhang, Suojiang School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou450000 China

Cerium oxide (CeO2) was prepared in phosphonium-based ionic liquids and P-CeO2 materials were obtained by doping phosphorous (P) on the surface of CeO2. Meanwhile, the surface physicochemical properties of materials and the catalytic reaction process for polyols conversion into carbonates were analyzed by XRD, FT-IR, TGA, TEM, BET, Raman, XPS, CO2-TPD, NH3-TPD, and in situ FT-IR tests. The results indicated that the P doping induced the surface reconstruction of CeO2, and an appropriate content of P could generate both Lewis acidic and basic sites related to P on the catalyst surface. Moreover, the P-mediated frustrated Lewis acid-base pairs (FLPs) could effectively promote the dissociation of substrates and the formation of critical intermediates, leading to the excellent catalytic performance of the prepared materials for synthesising carbonates from polyols. Under mild experimental conditions, the yield and selectivity of ethylene carbonate (EC) were 77.26% and 95.99%, much higher than other reported CeO2 catalysts. © 2024, The Authors. All rights reserved.

关键词： Cerium oxide

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：