| 正六棱型MoO3-x微米柱光催化剂的制备及性能 |
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| 引用本文： | 唐飞,杜多勤,谭芸妃,秦莉晓. 正六棱型MoO3-x微米柱光催化剂的制备及性能[J]. 应用化学, 2021, 0(1): 92-98 |
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| 作者姓名： | 唐飞 杜多勤 谭芸妃 秦莉晓 |
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| 作者单位： | 重庆大学化学化工学院;重庆斯泰克瑞登梅尔材料技术有限公司 |
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| 基金项目： | 国家自然科学基金(No.21776025);中央高校基本科研业务费(Nos.2018CDKYGL0002,2018CDKYHG0028);重庆市基础研究与前沿技术研究计划(No.CSTC2016JCYJA0474)资助。 |
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| 摘 要： | 首先采用低温水相合成法制备了正六棱型MoO3微米柱,然后以抗坏血酸为还原剂一步还原法制备了一种表面氧空位可控的MoO3-x光催化材料。MoO3-x具有较窄的禁带宽度和较大的光吸收范围。以罗丹明B为模拟污染物的光催化降解实验表明,随着氧空位的增加,MoO3-x的催化活性明显增加。对于Mo5+摩尔分数为20.1%的MoO2.799样品,降解90%的初始质量浓度为10 mg/L的罗丹明溶液只需要60 min。本研究为高性能半导体光催化材料的制备提供了一种新思路。
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| 关 键 词： | MoO3-x 正六棱型MoO3微米柱 氧空位 光催化 |
Preparation and Characterization of MoO3-x Hexagonal Microrods as High-Efficiency Photocatalysts |
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| TANG Fei,DU Duo-Qin,TAN Yun-Fei,QIN Li-Xiao. Preparation and Characterization of MoO3-x Hexagonal Microrods as High-Efficiency Photocatalysts[J]. Chinese Journal of Applied Chemistry, 2021, 0(1): 92-98 |
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| Authors: | TANG Fei DU Duo-Qin TAN Yun-Fei QIN Li-Xiao |
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| Affiliation: | (School of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331,China;Chongqing Star-Tech&JRS Specialty Products Co.Ltd.,Chongqing 401221,China) |
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| Abstract: | Hexagonal MoO3-x microrods with rich surface oxygen vacancies were prepared from MoO3 using a facile and controllable one-step reduction method with ascorbic acid as the reducing agent.The as-prepared MoO3-x microrods exhibit much better photocatalytic activity than MoO3 for degrading Rhodamine B due to the narrower band gap and wider range of sunlight absorption.Moreover,the photocatalytic activity of MoO3-x increases significantly with an increase in surface oxygen vacancies.For the MoO 2.799 sample with a Mo5+content of 20.1%,it only takes 60 minutes to degrade 90% of Rhodamine B in a solution with an initial concentration of 10 mg/L.This study may present a new strategy to synthesize semiconductor photocatalysts. |
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| Keywords: | MoO3-x Hexagonal MoO3 microrods Surface oxygen vacancies Photocatalysis |
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