在Web of Science数据库和CNKI数据库中进行主题词检索,通过CiteSpace 6.1. R6对发文量趋势、发表国家机构、重点研究方向等进行可视化分析,并绘制知识科学图谱,探究抗生素抗性基因(ARGs)在污水处理领域的研究现状、热点问题以及发展趋...在Web of Science数据库和CNKI数据库中进行主题词检索,通过CiteSpace 6.1. R6对发文量趋势、发表国家机构、重点研究方向等进行可视化分析,并绘制知识科学图谱,探究抗生素抗性基因(ARGs)在污水处理领域的研究现状、热点问题以及发展趋势。结果表明:关于ARGs在污水处理领域的研究发文数量呈现快速增长态势;我国在该领域的研究起步较晚,但发文量远高于其他国家,占Web of Science中总发文量的37.166%,具有一定的影响力;目前该领域的研究主要围绕抗生素、宿主细菌、处理工艺、制药及养殖废水等方面展开,未来的研究重点将放到环境污染物与ARGs的共选择机制、抗性基因与微生物群落的相关性、环境风险和健康风险等方面。展开更多
This work adopts a multi⁃step etching⁃heat treatment strategy to prepare porous silicon microsphere com⁃posite with Sb⁃Sn surface modification and carbon coating(pSi/Sb⁃Sn@C),using industrial grade SiAl alloy micro⁃sp...This work adopts a multi⁃step etching⁃heat treatment strategy to prepare porous silicon microsphere com⁃posite with Sb⁃Sn surface modification and carbon coating(pSi/Sb⁃Sn@C),using industrial grade SiAl alloy micro⁃spheres as a precursor.pSi/Sb⁃Sn@C had a 3D structure with bimetallic(Sb⁃Sn)modified porous silicon micro⁃spheres(pSi/Sb⁃Sn)as the core and carbon coating as the shell.Carbon shells can improve the electronic conductivi⁃ty and mechanical stability of porous silicon microspheres,which is beneficial for obtaining a stable solid electrolyte interface(SEI)film.The 3D porous core promotes the diffusion of lithium ions,increases the intercalation/delithia⁃tion active sites,and buffers the volume expansion during the intercalation process.The introduction of active met⁃als(Sb⁃Sn)can improve the conductivity of the composite and contribute to a certain amount of lithium storage ca⁃pacity.Due to its unique composition and microstructure,pSi/Sb⁃Sn@C showed a reversible capacity of 1247.4 mAh·g^(-1) after 300 charge/discharge cycles at a current density of 1.0 A·g^(-1),demonstrating excellent rate lithium storage performance and enhanced electrochemical cycling stability.展开更多
文摘在Web of Science数据库和CNKI数据库中进行主题词检索,通过CiteSpace 6.1. R6对发文量趋势、发表国家机构、重点研究方向等进行可视化分析,并绘制知识科学图谱,探究抗生素抗性基因(ARGs)在污水处理领域的研究现状、热点问题以及发展趋势。结果表明:关于ARGs在污水处理领域的研究发文数量呈现快速增长态势;我国在该领域的研究起步较晚,但发文量远高于其他国家,占Web of Science中总发文量的37.166%,具有一定的影响力;目前该领域的研究主要围绕抗生素、宿主细菌、处理工艺、制药及养殖废水等方面展开,未来的研究重点将放到环境污染物与ARGs的共选择机制、抗性基因与微生物群落的相关性、环境风险和健康风险等方面。
文摘This work adopts a multi⁃step etching⁃heat treatment strategy to prepare porous silicon microsphere com⁃posite with Sb⁃Sn surface modification and carbon coating(pSi/Sb⁃Sn@C),using industrial grade SiAl alloy micro⁃spheres as a precursor.pSi/Sb⁃Sn@C had a 3D structure with bimetallic(Sb⁃Sn)modified porous silicon micro⁃spheres(pSi/Sb⁃Sn)as the core and carbon coating as the shell.Carbon shells can improve the electronic conductivi⁃ty and mechanical stability of porous silicon microspheres,which is beneficial for obtaining a stable solid electrolyte interface(SEI)film.The 3D porous core promotes the diffusion of lithium ions,increases the intercalation/delithia⁃tion active sites,and buffers the volume expansion during the intercalation process.The introduction of active met⁃als(Sb⁃Sn)can improve the conductivity of the composite and contribute to a certain amount of lithium storage ca⁃pacity.Due to its unique composition and microstructure,pSi/Sb⁃Sn@C showed a reversible capacity of 1247.4 mAh·g^(-1) after 300 charge/discharge cycles at a current density of 1.0 A·g^(-1),demonstrating excellent rate lithium storage performance and enhanced electrochemical cycling stability.
