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Fabrication of a CuBi2O4/g-C3N4 p–n heterojunction with enhanced visible light photocatalytic efficiency toward tetracycline degradation
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2017-08-23 00:00:00 , DOI: 10.1039/c7qi00402h Feng Guo 1, 2, 3, 4, 5 , Weilong Shi 1, 2, 3, 4, 5 , Huibo Wang 1, 2, 3, 4, 5 , Hui Huang 1, 2, 3, 4, 5 , Yang Liu 1, 2, 3, 4, 5 , Zhenhui Kang 1, 2, 3, 4, 5
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2017-08-23 00:00:00 , DOI: 10.1039/c7qi00402h Feng Guo 1, 2, 3, 4, 5 , Weilong Shi 1, 2, 3, 4, 5 , Huibo Wang 1, 2, 3, 4, 5 , Hui Huang 1, 2, 3, 4, 5 , Yang Liu 1, 2, 3, 4, 5 , Zhenhui Kang 1, 2, 3, 4, 5
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As the misuse and overuse of tetracycline (TC) contribute to water pollution, it is imperative to explore an efficient and cost-effective approach for the removal of TC in aqueous solution. Photocatalysis is a green and sustainable chemical technique because of its utilization of solar energy. From the view of practical application, it is significant to design a highly efficient, stable, eco-friendly and economical photocatalyst. In this work, CuBi2O4/g-C3N4 p–n heterojunctions with different CuBi2O4 content (10–90 wt%) were prepared via a facile calcining method. The CuBi2O4/g-C3N4 heterojunctions exhibit superior photocatalytic activity in the degradation of TC, compared with pristine CuBi2O4 and g-C3N4. The optimum photoactivity of 70 wt% CuBi2O4/g-C3N4 is up to 4 and 6 times higher than that of CuBi2O4 and g-C3N4, respectively. The enhanced photocatalytic activity can be attributed to p–n junction photocatalytic systems, which effectively promote charge carrier separation and transfer. It is anticipated that the design of CuBi2O4/g-C3N4 could offer the insight needed to construct inexpensive and highly efficient g-C3N4-based heterojunction photocatalysts, to relieve urgent environmental deterioration.
中文翻译：
具有增强的可见光对四环素降解的光催化效率的CuBi 2 O 4 / gC 3 N 4 p–n异质结的制备
由于四环素（TC）的滥用和过度使用会造成水污染，因此必须探索一种有效且具有成本效益的方法来去除水溶液中的TC。由于光催化利用太阳能，因此是一种绿色且可持续的化学技术。从实际应用来看，设计一种高效，稳定，环保，经济的光催化剂具有重要意义。在这项工作中，通过简便的煅烧方法制备了具有不同CuBi 2 O 4含量（10-90 wt％）的CuBi 2 O 4 / gC 3 N 4 p–n异质结。CuBi 2 O 4 / gC 3与原始的CuBi 2 O 4和gC 3 N 4相比，N 4异质结在TC降解中表现出优异的光催化活性。70wt％的CuBi 2 O 4 / gC 3 N 4的最佳光活性分别比CuBi 2 O 4和gC 3 N 4分别高4倍和6倍。增强的光催化活性可以归因于p–n结光催化系统，该系统有效地促进了电荷载流子的分离和转移。预计CuBi 2 O 4的设计/ gC 3 N 4可以提供构建廉价且高效的基于gC 3 N 4的异质结光催化剂所需的见识，以缓解紧急的环境恶化。
更新日期：2017-09-07
中文翻译：
具有增强的可见光对四环素降解的光催化效率的CuBi 2 O 4 / gC 3 N 4 p–n异质结的制备
由于四环素（TC）的滥用和过度使用会造成水污染，因此必须探索一种有效且具有成本效益的方法来去除水溶液中的TC。由于光催化利用太阳能，因此是一种绿色且可持续的化学技术。从实际应用来看，设计一种高效，稳定，环保，经济的光催化剂具有重要意义。在这项工作中，通过简便的煅烧方法制备了具有不同CuBi 2 O 4含量（10-90 wt％）的CuBi 2 O 4 / gC 3 N 4 p–n异质结。CuBi 2 O 4 / gC 3与原始的CuBi 2 O 4和gC 3 N 4相比，N 4异质结在TC降解中表现出优异的光催化活性。70wt％的CuBi 2 O 4 / gC 3 N 4的最佳光活性分别比CuBi 2 O 4和gC 3 N 4分别高4倍和6倍。增强的光催化活性可以归因于p–n结光催化系统，该系统有效地促进了电荷载流子的分离和转移。预计CuBi 2 O 4的设计/ gC 3 N 4可以提供构建廉价且高效的基于gC 3 N 4的异质结光催化剂所需的见识，以缓解紧急的环境恶化。
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