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Facile synthesis of novel three-dimensional Bi2S3 nanocrystals capped by polyvinyl pyrrolidone to enhance photocatalytic properties under visible light.
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2020-03-31 , DOI: 10.1016/j.jcis.2020.03.111 Haifeng Shen 1 , Zhouwei Shao 2 , Qinfu Zhao 3 , Mengru Jin 1 , Chuang Shen 2 , Meng Deng 1 , Guolun Zhong 1 , Feng Huang 4 , Haiyan Zhu 3 , Fei Chen 1 , Zhimin Luo 2
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2020-03-31 , DOI: 10.1016/j.jcis.2020.03.111 Haifeng Shen 1 , Zhouwei Shao 2 , Qinfu Zhao 3 , Mengru Jin 1 , Chuang Shen 2 , Meng Deng 1 , Guolun Zhong 1 , Feng Huang 4 , Haiyan Zhu 3 , Fei Chen 1 , Zhimin Luo 2
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Exploitation of novel photocatalysts for highly efficient degradation of organic dyes and reduction of hexavalent chromium is of significance to reduce environmental pollution. Herein, a novel three-dimensional flower-like Bi2S3 nanocrystals composed of two-dimensional Bi2S3 nanosheets were prepared by one-pot hydrothermal method with polyvinyl pyrrolidone (Mw = 1300000) as a capping agent. The experimental results show that polyvinyl pyrrolidone has evident enhanced effect on the photocatalytic performance of Bi2S3, and the polyvinyl pyrrolidone modified three-dimensional Bi2S3 (Bi2S3-1) displays extraordinary catalytic activity for photodegradation of rhodamine B and photoreduction of Cr(VI) under visible light. The rates of photodegradating rhodamine B and photoreducing Cr(VI) with Bi2S3-1 can reach 93.9% in 30 min (k = 0.07675 min-1) and 95.2% in 5 min (k = 0.47351 min-1), respectively. The photocatalytic performance of polyvinyl pyrrolidone modified three-dimensional Bi2S3 is much better than those of previously reported bismuth-based nanostructures. This work provides a new insight into the development of inorganic photocatalysts for both degradation of organic dyes and reduction of heavy metal ions.
中文翻译：
聚乙烯吡咯烷酮封端的新型三维Bi2S3纳米晶体的简便合成，可增强可见光下的光催化性能。
开发用于高效降解有机染料和还原六价铬的新型光催化剂对于减少环境污染具有重要意义。在此，通过一锅水热法，以聚乙烯吡咯烷酮（Mw ＝ 1300000）作为封端剂，制备了由二维Bi 2 S 3纳米片组成的新型三维花状Bi 2 S 3纳米晶体。实验结果表明，聚乙烯吡咯烷酮对Bi2S3的光催化性能具有明显的增强作用，聚乙烯吡咯烷酮改性的三维Bi2S3（Bi2S3-1）在可见光下对若丹明B的光降解和Cr（VI）的光还原表现出非凡的催化活性。光。Bi2S3-1对罗丹明B的光降解和Cr（VI）的光降解率在30分钟内（k = 0.07675 min-1）和95可以达到93.9％。5分钟内分别占2％（k = 0.47351 min-1）。聚乙烯吡咯烷酮改性的三维Bi2S3的光催化性能比以前报道的基于铋的纳米结构好得多。这项工作为开发用于降解有机染料和还原重金属离子的无机光催化剂提供了新的见识。
更新日期：2020-03-31
中文翻译：
聚乙烯吡咯烷酮封端的新型三维Bi2S3纳米晶体的简便合成，可增强可见光下的光催化性能。
开发用于高效降解有机染料和还原六价铬的新型光催化剂对于减少环境污染具有重要意义。在此，通过一锅水热法，以聚乙烯吡咯烷酮（Mw ＝ 1300000）作为封端剂，制备了由二维Bi 2 S 3纳米片组成的新型三维花状Bi 2 S 3纳米晶体。实验结果表明，聚乙烯吡咯烷酮对Bi2S3的光催化性能具有明显的增强作用，聚乙烯吡咯烷酮改性的三维Bi2S3（Bi2S3-1）在可见光下对若丹明B的光降解和Cr（VI）的光还原表现出非凡的催化活性。光。Bi2S3-1对罗丹明B的光降解和Cr（VI）的光降解率在30分钟内（k = 0.07675 min-1）和95可以达到93.9％。5分钟内分别占2％（k = 0.47351 min-1）。聚乙烯吡咯烷酮改性的三维Bi2S3的光催化性能比以前报道的基于铋的纳米结构好得多。这项工作为开发用于降解有机染料和还原重金属离子的无机光催化剂提供了新的见识。
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