Zhang Anran, Guo Yang, Xie Hao, Zhang Yangping, Fu Yunzhi, Ye Changqing, Du Yukou, Zhu Mingshan
College of Science, Hainan University, Haikou 570228, PR China.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
J Colloid Interface Sci. 2022 Dec 15;628(Pt A):397-408. doi: 10.1016/j.jcis.2022.07.169. Epub 2022 Jul 30.
The application of graphite carbon nitride photocatalysts is hampered by their low specific surface areas, few active sites, and low photogenerated electron-hole transfer rates. Here, we report a green and controllable strategy for synthesizing kelp-like carbon nitride nanosheets through self-assembled materials prepared from melamine and trithiocyanuric acid using sonochemistry. The prepared carbon nitride nanosheets showed superior and long-lasting photocatalytic activity in hydrogen evolution and the degradation of tetracycline hydrochloride. The significantly enhanced photocatalytic performance of carbon nitride nanosheets is attributed to the curled porous nanosheet structure and the appropriate amount of O-doping. This work provides a new design strategy for preparing shape-controlled carbon nitride catalysts via a green, fast, sonochemically mediated self-assembly approach.
石墨相氮化碳光催化剂因其低比表面积、活性位点少和光生电子-空穴转移速率低而受到限制。在此，我们报道了一种绿色可控的策略，通过声化学法利用三聚氰胺和三硫氰尿酸制备的自组装材料合成海带状氮化碳纳米片。所制备的氮化碳纳米片在析氢和盐酸四环素降解方面表现出优异且持久的光催化活性。氮化碳纳米片显著增强的光催化性能归因于卷曲的多孔纳米片结构和适量的O掺杂。这项工作为通过绿色、快速的声化学介导自组装方法制备形状可控的氮化碳催化剂提供了一种新的设计策略。
