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Ultrathin Mesoporous Carbon Nitride Nanosheets Prepared Through a One‐Pot Approach towards Enhanced Photocatalytic Activity
Energy Technology ( IF 3.6 ) Pub Date : 2020-09-22 , DOI: 10.1002/ente.202000719
Siyu Yu 1 , Chunmei Li 1 , Huihui Wu 1 , Yun Wang 1 , Lei Wang 1 , Hongjun Dong 1 , Zhonghui Han 2
Affiliation  

It is still a huge challenge to design a high‐efficiency ultrathin mesoporous nonmetallic photocatalyst by facile eco‐friendly approach for simultaneously enhanced photocatalytic performance for degradation organic pollutant and H2 generation from water splitting. Herein, ultrathin mesoporous carbon nitride nanosheets are prepared via a one‐step thermal polycondensation approach using urea and ammonium carbonate ((NH4)2CO3) as precursor, where the small molecules generated in the thermal treatment process are environmentally friendly. It exhibits high photocatalytic degradation bisphenol A performance and H2 evolution activity compared with the bulk graphitic carbon nitride (g‐C3N4) nanosheet. The improvement of photocatalytic performance results from the ultrathin mesoporous structure with enlarged specific surface area and the abundant mesoporous channels, which facilitates the light absorption and promotes the separation efficiency of photogenerated electron–hole pairs. This work demonstrates a facile eco‐friendly approach to modulate g‐C3N4 morphology for improving its photocatalytic performance.

中文翻译:

通过一锅法制备的增强光催化活性的超薄中孔氮化碳纳米片

通过简便的环保方法设计高效,超薄介孔非金属光催化剂,同时增强降解分解水中的有机污染物和H 2的光催化性能,仍然是一个巨大的挑战。在此,采用尿素和碳酸铵((NH 42 CO 3)作为前体,通过一步热缩聚方法制备超薄中孔氮化碳纳米片,其中在热处理过程中产生的小分子对环境友好。与本体石墨氮化碳(g-C 3 N)相比,它具有高的光催化降解双酚A性能和H 2析出活性。4)纳米片。光催化性能的提高归因于超薄的介孔结构,具有更大的比表面积和丰富的介孔通道,从而促进了光吸收并提高了光生电子-空穴对的分离效率。这项工作展示了一种简便的生态友好方法,可调节g‐C 3 N 4形态以改善其光催化性能。
更新日期:2020-09-22
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