化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (9) : 188-192. DOI: 10.19817/j.cnki.issn 1006-3536.2021.09.041

科学研究

Ni³⁺掺杂BiVO₄光催化剂的制备及光催化性能

康巧梅, 高灵铭

作者信息 +

Preparation and performance of Ni³⁺ doped BiVO₄ photocatalyst

Kang Qiaomei, Gao Lingming

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文章历史 +

Received		Published
2021-04-16		2021-09-20
Issue Date	Revised Date
2021-09-30	2021-04-16

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摘要

采用水热法制备Ni-BiVO₄复合光催化剂,选择X射线衍射(XRD)、紫外-可见漫反射(UV-Vis DRS)、扫描电镜(SEM)、红外光谱(FT-IR)、BET比表面积、X射线光电子能谱(XPS)对复合催化剂进行表征分析。结果表明:Ni是以+3价掺杂于BiVO₄晶体中,对BiVO₄的晶体结构没有影响;Ni-BiVO₄复合催化剂的带隙为2.07eV,比表面积为1.909m²/g,其形貌发生了改变,与BiVO₄有相一致的衍射峰。以500W氙灯为光源,投加0.1g Ni-BiVO₄复合催化剂,降解100mL 10mg/L罗丹明B溶液,光照120min,降解效果达98.6%。经循环催化实验4次后,降解效率仍保持90%以上。

Abstract

Composite photocatalyst Ni-BiVO₄ was synthesized by hydrothermal method.Its structure was characterized and analyzed by XRD,UV-Vis DRS,SEM,FT-IR,BET and XPS.The characterization results showed that Ni was doped in BiVO₄ crystal with +3 valence,which had no effect on the crystal structure of BiVO₄.The band gap of the Ni-BiVO₄ was 2.07eV,the specific surface area was 1.909m²/g.Its morphology was changed,which had the same diffraction peak as BiVO₄.The experimental results showed that using 500W xenon lamp as light source,adding 0.1g Ni-BiVO₄ was used to degrade 100mL rhodamine B solution with concentration of 10mg/L.The degradation effect was 98.6% under 120 min illumination.After four times of cyclic catalytic experiments,the degradation efficiency remained above 90%.

关键词

掺杂 / BiVO₄ / 罗丹明B / 降解 / 水热法

Key words

doping / BiVO₄ / rhodamine B / degradation / hydrothermal method

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Ni³⁺掺杂BiVO₄光催化剂的制备及光催化性能[J]. 化工新型材料, 2021, 49(9): 188-192 DOI:10.19817/j.cnki.issn 1006-3536.2021.09.041

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