Cu掺杂BiVO4催化剂的制备及其光催化性能
Preparation and Photocatalytic Properties of Cu-Doped BiVO4 Catalyst
作者单位E-mail
沈男 上海工程技术大学纺织服装学院, 上海 201620  
沈勇 上海工程技术大学纺织服装学院, 上海 201620 shenyong@sues.edu.cn 
潘虹 上海工程技术大学纺织服装学院, 上海 201620  
徐丽慧 上海工程技术大学纺织服装学院, 上海 201620  
李凯 上海工程技术大学纺织服装学院, 上海 201620  
倪哲伟 上海工程技术大学纺织服装学院, 上海 201620  
倪凯 上海工程技术大学纺织服装学院, 上海 201620  
凌杭丽 上海工程技术大学纺织服装学院, 上海 201620  
摘要: 以Cu (NO32·3H2O为铜源,采用水热法在180℃条件下制备了不同Cu掺杂量的BiVO4光催化材料,其在可见光下具有强大的氧化还原能力。通过X射线衍射、X射线光电子能谱、扫描电子显微镜、紫外可见吸收光谱、荧光光谱、电化学阻抗谱等表征手段对样品进行表征与分析,并以500 W Xe灯为模拟可见光源,罗丹明B染料(RhB)为目标污染物,进行光催化性能研究。研究结果显示,Cu掺杂改变了BiVO4的形貌,当Cu掺杂量(质量分数)为1%时,在500~800 nm范围内可见光吸收显著,使得光催化活性达到最佳,对RhB (10 mg·L-1)的降解率可达81.6%,较同条件下制备的纯BiVO4光催化效率提高了近20%。
关键词: BiVO4  Cu掺杂  染料降解  光催化
基金项目: 国家自然科学基金(No.51703123)、上海市自然科学基金(No.21ZR1426200)和上海工程技术大学研究生科研创新项目(No.20KY0905)资助。
Abstract: BiVO4 photocatalytic materials with different Cu doping amounts were prepared by hydrothermal method at 180℃ via Cu(NO3)2·3H2O as the copper source, and exhibited enhanced photocatalytic performance under visible light. The samples were characterized and analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, UV-Vis absorption spectroscopy, photoluminescence spectra and electrochemical impedance spectroscopy. The photocatalytic activity of rhodamine B (RhB) dye was evaluated under the irradiation of 500 W Xe lamp to simulate the visible light. The results suggest that the Cu doping can not only alter the morphology of BiVO4, but also influence the photocatalytic activity of BiVO4. The visible light absorption of BiVO4 doped with mass ratio of 1% Cu was significantly enhanced in the range of 500~800 nm. This catalyst can achieve the optimum photocatalytic activity for the degradation of RhB (10 mg·L-1) with degradation rate of 81.6%, which was nearly 20% higher than that of pure BiVO4 prepared under the same conditions.
Keywords: BiVO4  Cu-doped  dye degradation  photocatalytic
投稿时间:2021-06-01 修订日期:2021-08-07
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沈男,沈勇,潘虹,徐丽慧,李凯,倪哲伟,倪凯,凌杭丽.Cu掺杂BiVO4催化剂的制备及其光催化性能[J].无机化学学报,2021,37(10):1839-1846.
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