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Carbon Dot Loaded Integrative CoFe2O4/g‐C3N4 P‐N Heterojunction: Direct Solar Light‐Driven Photocatalytic H2 Evolution and Organic Pollutant Degradation
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-09-10 , DOI: 10.1002/slct.202002543 Mathiazhagan Lallimathi 1 , Periyathambi Kalisamy 1 , Mathiazhagan Suryamathi 2 , T. Alshahrani 3 , Mohd. Shkir 4 , Munusamy Venkatachalam 1 , Baskaran Palanivel 5
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-09-10 , DOI: 10.1002/slct.202002543 Mathiazhagan Lallimathi 1 , Periyathambi Kalisamy 1 , Mathiazhagan Suryamathi 2 , T. Alshahrani 3 , Mohd. Shkir 4 , Munusamy Venkatachalam 1 , Baskaran Palanivel 5
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In this report, the novel carbon dot (CD) loaded CoFe2O4/g‐C3N4 p‐n heterojunction for photocatalytic H2 evolution and tetracycline (TCN) degradation under sunlight irradiation has been proposed. The wet chemical method was used to prepare the photocatalysts. The heterojunction formation between the CoFe2O4 and g‐C3N4 facilitates to improve the solar light absorption ability which was confirmed by UV‐vis‐diffused reflectance spectroscopy. Moreover, the CD loading improves the charge carrier's separation. Comparison with the pure and binary nanocomposite photocatalysts, the CD loaded ternary heterojunction photocatalyst exhibits the greater photocatalytic performance with high H2 production (2715 μmol/g) and TCN degradation (95 %) under sun‐light irradiation. Moreover, the recycling process shows the excellent stability nature of ternary composite photocatalyst. The probable photocatalytic mechanism and the main active radicals for the degradation process were well defined with the help of elemental trapping experiment.
中文翻译：
碳点负载的集成CoFe2O4 / g-C3N4 P-N异质结：直接太阳光驱动的光催化H2的释放和有机污染物的降解
在本报告中，已提出了新型的碳点（CD）负载的CoFe 2 O 4 / g-C 3 N 4 p-n异质结，用于在阳光照射下光催化H 2的释放和四环素（TCN）的降解。使用湿化学法制备光催化剂。CoFe 2 O 4和g‐C 3 N 4之间的异质结形成有助于提高太阳光的吸收能力，这一点已通过紫外可见漫反射光谱法得到证实。此外，CD加载可改善电荷载体的分离。与纯和二元纳米复合光催化剂相比，CD负载的三元异质结光催化剂表现出更高的光催化性能，在阳光照射下具有较高的H 2生成量（2715μmol/ g）和TCN降解（95％）。而且，该再循环过程显示了三元复合光催化剂的优异的稳定性。借助元素捕获实验，对降解过程中可能的光催化机理和主要活性自由基进行了明确定义。
更新日期：2020-09-10
中文翻译：
碳点负载的集成CoFe2O4 / g-C3N4 P-N异质结：直接太阳光驱动的光催化H2的释放和有机污染物的降解
在本报告中，已提出了新型的碳点（CD）负载的CoFe 2 O 4 / g-C 3 N 4 p-n异质结，用于在阳光照射下光催化H 2的释放和四环素（TCN）的降解。使用湿化学法制备光催化剂。CoFe 2 O 4和g‐C 3 N 4之间的异质结形成有助于提高太阳光的吸收能力，这一点已通过紫外可见漫反射光谱法得到证实。此外，CD加载可改善电荷载体的分离。与纯和二元纳米复合光催化剂相比，CD负载的三元异质结光催化剂表现出更高的光催化性能，在阳光照射下具有较高的H 2生成量（2715μmol/ g）和TCN降解（95％）。而且，该再循环过程显示了三元复合光催化剂的优异的稳定性。借助元素捕获实验，对降解过程中可能的光催化机理和主要活性自由基进行了明确定义。
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