A novel plasmonic photo‐Fenton catalyst of Ag/AgCl/Fe‐S was synthesized by ion exchange and photoreduction methods.The obtained catalyst was characterized by X‐ray diffraction,X‐ray photoelectron spectroscopy,scan...A novel plasmonic photo‐Fenton catalyst of Ag/AgCl/Fe‐S was synthesized by ion exchange and photoreduction methods.The obtained catalyst was characterized by X‐ray diffraction,X‐ray photoelectron spectroscopy,scanning electron microscope imaging,and Brunauer‐Emmett‐Teller measurements.Moreover,the photocatalytic activity of Ag/AgCl/Fe‐S was investigated for its degradation activity towards bisphenol A(BPA)as target pollutant under visible light irradiation.The effects of H2O2concentration,pH value,illumination intensity,and catalyst dosage on BPA degradation were examined.Our results indicated that the Ag/AgCl material was successfully loaded onto Fe‐sepiolite and showed a high photocatalytic activity under illumination by visible light.Furthermore,active species capture experiments were performed to explore the photocatalytic mechanism of the Ag/AgCl/Fe‐S in this heterogeneous photo‐Fenton process,where the major active species included hydroxyl radicals(?OH)and holes(h+).展开更多
利用溶胶-凝胶法及光沉积法制备纳米金-钛酸锌（Nano Au-Zn Ti O_3）复合等离子光催化剂。采用X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）、紫外可见漫反射光谱、荧光光谱、光电流密度、光催化制氢性能等技术手段和测试表征了...利用溶胶-凝胶法及光沉积法制备纳米金-钛酸锌（Nano Au-Zn Ti O_3）复合等离子光催化剂。采用X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）、紫外可见漫反射光谱、荧光光谱、光电流密度、光催化制氢性能等技术手段和测试表征了样品的结构及性能。结果表明,Zn Ti O_3在900℃煅烧下呈立方相和六角相的混合相,其形貌呈近似球形,粒径约为50～100 nm。由于纳米金（Nano Au）的表面等离子共振效应,Nano Au-Zn Ti O_3复合材料在可见光区有较强的吸收,吸收峰位于525 nm处。Nano Au-Zn Ti O_3复合等离子光催化剂在可见光激发下呈现出优良的光催化分解水制氢活性。展开更多
基金supported by the National Natural Science Foundation of China(41573118)Research Foundation of Education Bureau of Hunan Province,China(14B177)Special Project of Xiangtan University~~
文摘A novel plasmonic photo‐Fenton catalyst of Ag/AgCl/Fe‐S was synthesized by ion exchange and photoreduction methods.The obtained catalyst was characterized by X‐ray diffraction,X‐ray photoelectron spectroscopy,scanning electron microscope imaging,and Brunauer‐Emmett‐Teller measurements.Moreover,the photocatalytic activity of Ag/AgCl/Fe‐S was investigated for its degradation activity towards bisphenol A(BPA)as target pollutant under visible light irradiation.The effects of H2O2concentration,pH value,illumination intensity,and catalyst dosage on BPA degradation were examined.Our results indicated that the Ag/AgCl material was successfully loaded onto Fe‐sepiolite and showed a high photocatalytic activity under illumination by visible light.Furthermore,active species capture experiments were performed to explore the photocatalytic mechanism of the Ag/AgCl/Fe‐S in this heterogeneous photo‐Fenton process,where the major active species included hydroxyl radicals(?OH)and holes(h+).
文摘利用溶胶-凝胶法及光沉积法制备纳米金-钛酸锌（Nano Au-Zn Ti O_3）复合等离子光催化剂。采用X射线衍射（XRD）、场发射扫描电子显微镜（FE-SEM）、紫外可见漫反射光谱、荧光光谱、光电流密度、光催化制氢性能等技术手段和测试表征了样品的结构及性能。结果表明,Zn Ti O_3在900℃煅烧下呈立方相和六角相的混合相,其形貌呈近似球形,粒径约为50～100 nm。由于纳米金（Nano Au）的表面等离子共振效应,Nano Au-Zn Ti O_3复合材料在可见光区有较强的吸收,吸收峰位于525 nm处。Nano Au-Zn Ti O_3复合等离子光催化剂在可见光激发下呈现出优良的光催化分解水制氢活性。
