摘要
用浓硫酸加热氧化法,获得提纯的辉钼矿。利用X射线荧光光谱(XRF)、X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和拉曼光谱(Raman),对氧化前后的样品进行表征,并测试样品的电催化性能。经浓硫酸氧化后,MoS_2的(002)晶面晶粒的平均粒径减小14%,层间距增加0.04?,且S2-被氧化为S6+。结果表明,经过浓硫酸氧化,MoS_2的片层能够在一定程度上被剥离,辉钼矿对于对硝基苯酚的还原作用增强,还原峰电位发生正向移动。
The purified molybdenite were obtained using concentrated sulfuric acid and heating oxidation method, and the samples before and after oxidation were characterized systematically based on X-ray fluorescence spectrum（XRF）, powder X-ray diffraction（XRD）, X-ray photoelectron spectroscopy（XPS）, scanning electron microscopy（SEM） and Raman spectroscopy. Moreover, its electrocatalytic properties were tested and analyzed. The results show that the average grain size of MoS2（002） crystal plane direction decreases by 14% and interlayer spacing increases 0.04？ after concentrated sulfuric acid oxidation, and S～（2-） is oxidized into S～（6＋）, indicating that layers of Molybdenite can be stripped through oxidation. The reductive peak of potential move forward after oxidation, implying reduction enhancement on p-nitrophenol.
作者
强静雅
传秀云
QIANG Jingya, CHUAN Xiuyun(The Key Laboratory of Orogenis Belts and Crustal Evolution （MOE）, School of Earth and Space Sciences, Peking University, Beijing 100871)
出处
《北京大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第3期579-584,共6页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金(51274015)
北京大学开放测试基金(0000012321)资助
关键词
辉钼矿
酸浸氧化
X射线衍射
拉曼光谱
电化学催化
molybdenum disulfide
acid leaching and oxidizing
XRD
Ramanspectroscopy
electrocatalysis
