The unique structural and electrical properties of two-dimensional van der Waals (vdW) material, nickel-phosphorus trisulfide (NiPS3), render it a promising compound for its adaptation in advanced technology applicati...The unique structural and electrical properties of two-dimensional van der Waals (vdW) material, nickel-phosphorus trisulfide (NiPS3), render it a promising compound for its adaptation in advanced technology applications. In order to explore its potential practical applications in optoelectronic, spintronic, and energy conversion technologies, this work has explored some of the fundamental aspects defining the excitonic behavior of NiPS3, such as bandgap characteristics, antiferromagnetism, and semiconductor nature derived from its layered structure. This study of the properties of NiPS3 would also outline problems or difficulties that must be faced upon its use in new technologies. This also indicates the demand for further research on NiPS3 to fulfill or realize its promise in technological advancement more fully.展开更多
以NaH_2PO_2和Ni_2SO_4为磷源和镍源,使用一锅法合成了非晶态NiP合金及其碳纳米(乙炔黑和石墨烯)复合催化剂。用透射电子显微镜(TEM)、X射线衍射仪(XRD)、热重分析(TGA)、电感耦合等离子体光谱仪(ICP)分别对催化剂性能和组成进行了表征...以NaH_2PO_2和Ni_2SO_4为磷源和镍源,使用一锅法合成了非晶态NiP合金及其碳纳米(乙炔黑和石墨烯)复合催化剂。用透射电子显微镜(TEM)、X射线衍射仪(XRD)、热重分析(TGA)、电感耦合等离子体光谱仪(ICP)分别对催化剂性能和组成进行了表征和分析。通过线性扫描伏安对催化剂在酸性和碱性条件下的析氢性能进行了评价,研究结果表明,非晶态NiP/还原氧化石墨烯复合催化剂(NiP/RGO)展现出优异的电催化性能。在0.5 mol/L H_2SO_4中的起始过电位为89.0 m V,塔菲尔斜率为135.1 m V/decade;在1 mol/L NaOH中,起始过电位为116.1 m V,塔菲尔斜率为122.4 m V/decade,这与商业化Pt黑催化剂很接近。500次循环以后,催化剂活性没有明显下降,表明该催化剂具有良好的稳定性。该研究提供了一种简单可行的制备非贵金属磷化物方法用于电催化析氢反应。展开更多
文摘The unique structural and electrical properties of two-dimensional van der Waals (vdW) material, nickel-phosphorus trisulfide (NiPS3), render it a promising compound for its adaptation in advanced technology applications. In order to explore its potential practical applications in optoelectronic, spintronic, and energy conversion technologies, this work has explored some of the fundamental aspects defining the excitonic behavior of NiPS3, such as bandgap characteristics, antiferromagnetism, and semiconductor nature derived from its layered structure. This study of the properties of NiPS3 would also outline problems or difficulties that must be faced upon its use in new technologies. This also indicates the demand for further research on NiPS3 to fulfill or realize its promise in technological advancement more fully.
基金supported by National Natural Science Foundation of China(21073113)Natural Science Foundation of Shanxi(201701D121016)+1 种基金Science,Technology Innovation Project of Shanxi Province University(2015178,2016172)Natural Science Foundortion of Datong(2015108)
文摘以NaH_2PO_2和Ni_2SO_4为磷源和镍源,使用一锅法合成了非晶态NiP合金及其碳纳米(乙炔黑和石墨烯)复合催化剂。用透射电子显微镜(TEM)、X射线衍射仪(XRD)、热重分析(TGA)、电感耦合等离子体光谱仪(ICP)分别对催化剂性能和组成进行了表征和分析。通过线性扫描伏安对催化剂在酸性和碱性条件下的析氢性能进行了评价,研究结果表明,非晶态NiP/还原氧化石墨烯复合催化剂(NiP/RGO)展现出优异的电催化性能。在0.5 mol/L H_2SO_4中的起始过电位为89.0 m V,塔菲尔斜率为135.1 m V/decade;在1 mol/L NaOH中,起始过电位为116.1 m V,塔菲尔斜率为122.4 m V/decade,这与商业化Pt黑催化剂很接近。500次循环以后,催化剂活性没有明显下降,表明该催化剂具有良好的稳定性。该研究提供了一种简单可行的制备非贵金属磷化物方法用于电催化析氢反应。
