Modulation and self-assembly of nanoparticles into bismuth molybdate nanosheets as highly efficient photocatalysts for ciprofloxacin degradation,Environmental Science: Nano

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Modulation and self-assembly of nanoparticles into bismuth molybdate nanosheets as highly efficient photocatalysts for ciprofloxacin degradation
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2022-07-06 , DOI: 10.1039/d2en00445c
Juan Zhang ₁ , Yating Wang ₁ , Yuan Wang ₁ , Xiaofeng Shuai ₁ , Ruihua Zhao ₂ , Umsalama Abuelgasim Abubakr Yasin ₁ , Tianyu Guo ₃ , Jianping Du _{1,

4} , Jinping Li _{1,

4}

Affiliation

2D bismuth molybdate nanosheets with tunable shape and size were synthesized by a surfactant-assisted hydrothermal method and their photocatalytic performances were investigated. The characterization results show that bismuth molybdate materials consist of regular nanosheets that were self-assembled from uniform nanoparticles, and their sizes can be controlled by optimizing the synthesis conditions. The results of photocatalytic degradation indicate that the as-synthesized bismuth molybdate material exhibits excellent photocatalytic activity and good degradation rate of multi-pollutants under visible light irradiation. Notably, the degradation rates of ciprofloxacin and phenol reached 99.4% and 78.6% within 120 min, respectively, and the maximum reaction rate constants increased by 20 times compared to that of bismuth molybdate nanosheets with larger size, which is mainly attributed to the narrow energy gap and outstanding photoelectrochemical properties and improvement of charge separation efficiency of nanoparticles. As-synthesized bismuth molybdate nanosheets are expected to be a potential candidate for the degradation of multi-pollutants in actual environmental remediation.

中文翻译：

纳米粒子的调制和自组装成钼酸铋纳米片作为环丙沙星降解的高效光催化剂

采用表面活性剂辅助水热法合成了形状和尺寸可调的二维钼酸铋纳米片，并研究了它们的光催化性能。表征结果表明，钼酸铋材料由均匀的纳米粒子自组装而成的规则纳米片组成，其尺寸可以通过优化合成条件来控制。光催化降解结果表明，所合成的钼酸铋材料在可见光照射下表现出优异的光催化活性和良好的多污染物降解率。值得注意的是，环丙沙星和苯酚的降解率在 120 分钟内分别达到 99.4% 和 78.6%，与较大尺寸的钼酸铋纳米片相比，最大反应速率常数提高了20倍，这主要归功于纳米粒子的窄能隙和优异的光电化学性能以及电荷分离效率的提高。合成的钼酸铋纳米片有望成为实际环境修复中多污染物降解的潜在候选者。

更新日期：2022-07-06

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