检索结果-南通市图书馆

Tailoring NH_(4)^(+)storage by regulating oxygen defect in ammonium vanadate

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第7期9卷 1171-1182页

作者： Yanyan Liu Ziyi Feng Hanmei Jiang Xueying Dong Changgong Meng Yifu Zhang State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian116024China College of Environmental and Chemical Engineering Dalian UniversityDalian116622China

defect engineering is an effective strategy for modifying the energy storage materials to improve their electrochemical ***,the impact of oxygen defect and its content on the electrochemical performances in the burgeoning aqueous NH_(4)^(+)storage field remains ***,for the first time in this work,an oxygen-defective ammonium vanadate[(NH_(4))_(2)V_(10)O_(25)·8H_(2)O,denoted as Od-NHVO]with a novel 3D porous flower-like architecture was achieved via the reduction of thiourea in a mild reaction condition,which is a facile method that can realize the intention to regulate the oxygen defect content,with the capability of *** as-prepared Od_M-NHVO with moderate oxygen defect content can deliver a stable specific capacitance output(505 F g^(-1),252 mAh g^(-1)at 0.5 A g^(-1)with~80% capacitance retention after 10,000 cycles),which benefits from extra active sites,unimpeded NH_(4)^(+)-migration path and relatively high structure *** contrast,low oxygen defect content will lead to the torpid electrochemical reaction kinetics while too high content of it will reduce the chargestorage capability and induce structural *** superior NH_(4)^(+)-storage behavior is achieved with the reversible intercalation/deintercalation process of NH_(4)^(+)accompanied by forming/breaking of hydrogen *** expected,the assembled flexible OdM-NHVO//PTCDI quasi-solid-state hybrid supercapacitor(FQSS HSC)also exhibits high areal capacitance,energy density and reliable *** work provides a new avenue for developing materials with oxygen-deficient structure for application in various aqueous non-metal cation storage systems.

关键词： Ammonium vanadate oxygen defect Ammonium-ion storage Hybrid supercapacitors Electrochemical performance

oxygen‑defect Enhanced Anion Adsorption Energy Toward Super‑Rate and Durable Cathode for Ni–Zn Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2021年第11期13卷 128-141页

作者： Jia Yao Houzhao Wan Chi Chen Jie Ji Nengze Wang Zhaohan Zheng Jinxia Duan Xunying Wang Guokun Ma Li Tao Hanbin Wang Jun Zhang Hao Wang Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices School of Microelectronics and Faculty of Physics and Electronic ScienceHubei UniversityWuhan 430062People’s Republic of China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002People’s Republic of China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021People’s Republic of China

The alkaline zinc-based batteries with high energy density are becoming a research ***,the poor cycle stability and low-rate performance limit their wide ***,ultra-thin CoNiO2 nanosheet with rich oxygen defects anchored on the vertically arranged Ni nanotube arrays(Od-CNO@Ni NTs)is used as a positive material for rechargeable alkaline Ni–Zn *** the highly uniform Ni nanotube arrays provide a fast electron/ion transport path and abundant active sites,the Od-CNO@Ni NTs electrode delivers excellent capacity(432.7 mAh g^(−1))and rate capability(218.3 mAh g^(−1) at 60 A g^(−1)).Moreover,our Od-CNO@Ni NTs//Zn battery is capable of an ultra-long lifespan(93.0%of initial capacity after 5000 cycles),extremely high energy density of 547.5 Wh kg^(−1) and power density of 92.9 kW kg^(−1)(based on the mass of cathode active substance).Meanwhile,the theoretical calculations reveal that the oxygen defects can enhance the interaction between electrode surface and electrolyte ions,contributing to higher *** work opens a reasonable idea for the development of ultra-durable,ultra-fast,and high-energy Ni–Zn battery.

关键词： Ni-Zn battery oxygen defect Nanotube array CoNiO2 nanosheet Adsorption energy

In-situ oriented oxygen-defect-rich Mn-N-O via nitridation and electrochemical oxidation based on industrial-scale Mn_(2)O_(3) to achieve high-performance aqueous zinc ion battery

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第1期76卷 11-18,I0001页

作者： Yao Liu Shuailong Guo Wei Ling Mangwei Cui Hao Lei Jiaqi Wang Wenzheng Li Qingjiang Liu Lukuan Cheng Yan Huang Sauvage Laboratory for Smart Materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina Shenzhen Key Laboratory of Flexible Printed Electronics Technology Harbin Institute of TechnologyShenzhen 518055GuangdongChina State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

As a general problem in the field of batteries,materials produced on a large industrial scale usually possess unsatisfactory electrochemical *** them,manganese-based aqueous rechargeable zinc-ion batteries(ARZBs)have been emerging as promising large-scale energy storage systems owing to their high energy densities,low manufacturing cost and intrinsic high ***,the direct application of industrial-scale Mn2O3(MO)cathode exhibits poor electrochemical performance especially at high current ***,a highly reversible Mn-based cathode is developed from the industrial-scale MO by nitridation and following electrochemical oxidation,which triples the ion diffusion rate and greatly promotes the charge ***,the cathode delivers a capacity of 161 m Ah g^(-1) at a high current density of 10 A g^(-1),nearly-three times the capacity of pristine MO(60 m Ah g^(-1)).Impressive specific capacity(243.4 m Ah g^(-1))is obtained without Mn^(2+) additive added in the electrolyte,much superior to the pristine MO(124.5 m Ah g^(-1)),suggesting its enhanced reaction kinetics and structural *** addition,it possesses an outstanding energy output of 368.4 Wh kg^(-1) at 387.8 W kg^(-1),which exceeds many of reported cathodes in ARZBs,providing new opportunities for the large-scale application of highperformance and low-cost ARZBs.

关键词： Aqueous rechargeable zinc-ion battery Mn-based cathode oxygen defect Nitridation Electrochemical oxidation

Ensemble of single-atom catalysis and defect engineering in Cu_(1)/CeO_(2) nanozymes for tumor therapy

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2023年第9期66卷 2590-2599页

作者： Hao-Xin Liu Zhiliang Gao Han Yan Shan-Qing Li Wei-Wei Wang Xuetao Qin Hongning Sun Jiwei Cui Chun-Jiang Jia Key Laboratory of Colloid and Interface Chemistry Key Laboratory of Special Aggregated Materials of the Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China School of Materials and Environmental Engineering Chizhou UniversityChizhou 247000China

As a class of nanomaterials with natural enzyme-like characteristics, nanozymes have shown their great potential in various applications. Reducible metal oxides featured with defect structures, and single-atom catalysts with isolated metal sites are regarded as two of the most promising nanozymes. However, the strategies to construct highly performed nanozymes by combining these advantages are rarely reported. Herein, we report the coordination-unsaturated single-atomic Cu species supported on sintered CeO_(2), which combines the advantages of defect engineering and single-atom catalysis, exhibiting a largely enhanced peroxidase(POD)-like activity. The high-temperature calcination induces the transformation of inert Cu_(1)O_(4) species into coordination-unsaturated Cu_(1)O_(3) sites. This novel Cu_(1)O_(3) active sites with an unsaturated coordination work as a new type of defect sites to greatly activate the isolated Cu atoms and accelerate the dissociation of H_(2)O_(2) to form hydroxyl radicals(·OH). The obtained nanozyme with a high POD-like activity possesses low cytotoxicity, showing potential applications for the tumor inhibition in vitro and in vivo.

关键词： single-atom catalysis oxygen defect Cu/CeO_(2) peroxidase-like activity tumor inhibition

Nanostructured ZnO/ZnS with Type-II Hetero-junction for Efficient CO_(2) Photoreduction

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2024年第3期40卷 484-489页

作者： XIAO Qi LIU Ting ZHOU Qianhe LI Liangyu CHANG Chuntao GAO Dawei LI Danyang YOU Feifei School of Textile Garment and Design Changshu Institute of TechnologyChangshu 215500P.R.China School of Civil and Environmental Engineering The University of New South WalesAustralia College of Textile and Clothing Yancheng Institute of Technology.Yancheng 224051P.R.China Jiangsu Yueda Cotton Spinning Co. Ltd.Yancheng 224051P.R.China

Photocatalytic CO_(2) reduction driven by solar light is a green approach that can decrease the greenhouse effect induced by high CO_(2) concentration in the atmosphere and generate carbon-based chemicals/fuels as *** this paper,non-metal co-catalysts ZnO/ZnS type-II hetero-junction nanoparticles with a rough surface were prepared through a hydrothermal *** used as a photocatalyst for CO_(2) reduction,the optimal one showed good cycle stability and a higher yield rate of 27.8µmol·g^(−1)·h^(−1) for CO_(2) conversion into *** outstanding catalytic activity originated from i)the rich interfaces between ZnO and ZnS in the nanoscale could significantly reduce the delivery path of carriers and improve the utilization efficiency of photo-excited electron/hole pairs and ii)enriched surface oxygen defects could supply much more reaction active sites for CO_(2) adsorption.

关键词： ZnO/ZnS Photocatalytic CO_(2)reduction oxygen defect

Titanium carbide nanosheets with defect structure for photothermal-enhanced sonodynamic therapy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactive Materials 2022年第2期7卷 409-419页

作者： Guangqiang Li Xiaoyan Zhong Xianwen Wang Fei Gong Huali Lei Yangkai Zhou Chengfei Li Zhidong Xiao Guoxi Ren Liang Zhang Zhiqiang Dong Zhuang Liu Liang Cheng College of Science State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhan430070China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou215123China Department of Toxicology School of Public HealthMedical College of Soochow UniversitySuzhou215123China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai200050China College of Biomedicine and Health College of Life Science and TechnologyHuazhong Agricultural UniversityWuhanHubei430070China

Sonodynamic therapy(SDT)has attracted widespread interest in biomedicine,owing to its novel and noninvasive therapeutic method triggered by ultrasound(US).Herein,the Ti_(3)C_(2) MXene nanosheets(Ti_(3)C_(2) NSs)are developed as good sonosensitizers via a two-step method of chemical exfoliation and high-temperature *** the high-temperature treatment,the oxygen defect of Ti_(3)C_(2) MXene nanosheets(H-Ti_(3)C_(2) NSs)is greatly ***,the electron(e^(-))and hole(h^(+))generated by US can be separated faster due to the improved degree of oxidation,and then the recombination of e^(-)-h^(+)can be prevented with the abundant oxygen defect under US irradiation,which induced the sonodynamic efficiency greatly to improve around 3.7-fold compared with Ti_(3)C_(2) NSs without high-temperature *** PEGylation,the H-Ti_(3)C_(2)-PEG NSs show good stability and *** vitro studies exhibit that the inherent property of mild photothermal effect can promote the endocytosis of H-Ti_(3)C_(2)-PEG NSs,which can improve the SDT *** vivo studies further display that the increased blood supply by the mild photothermal effect can significantly relieve hypoxia in the tumor microenvironment,showing photothermal therapy(PTT)enhanced *** importantly,the H-Ti_(3)C_(2)-PEG NSs can be biodegraded and excreted out of the body,showing no significant long-term *** work develops the defective H-Ti_(3)C_(2) NSs as high-efficiency and safe sonosensitizers for photothermal-enhanced SDT of cancer,extending the biomedical application of MXene-based nanoplatforms.

关键词： Ti_(3)C_(2)MXenes oxygen defect Sonosensitizers Sonodynamic therapy Biosafety

Black Titania TiO2-x Yolk-shell Nanostructure Anodes for Sodium Ion Batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Black Titania TiO2-x Yolk-shell Nanostructure Anodes for Sod...