文献类型：期刊文献

英文题名：Construction of novel ZnTiO3/g-C3N4 heterostructures with enhanced visible light photocatalytic activity for dye wastewater treatment

作者：Zhuang, Jinyang[1];Zhang, Bei[1];Wang, Qiang[2];Guan, Shiyou[1,3];Li, Bing[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Univ, Inst Sustainable Energy, 99 Shangda Rd, Shanghai 200444, Peoples R China

年份：2019

卷号：30

期号：7

起止页码：6322

外文期刊名：JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS

收录：;EI(收录号：20191206654468);WOS:【SCI-EXPANDED(收录号:WOS:000467435300002)】；

基金：This work was supported by National Natural Science Foundation of China (Grant No. 51774145).

语种：英文

外文关键词：Azo dyes - Charge transfer - Irradiation - Light - Photocatalytic activity - Photodegradation - Potassium compounds - Red Shift - Rhodium compounds - Sodium chloride - Titanium compounds - Wastewater treatment

摘要：In this study, the crystalline and homogenous ZnTiO3 particles were first synthesized in KCl-NaCl eutectic chloride salts at 700-850 degrees C. Then the ZnTiO3 was successfully loaded onto g-C3N4 sheets to form ZnTiO3/g-C3N4 composites during the polymerization of melamine. Compared with pure g-C3N4, ZnTiO3/g-C3N4 composites have shown an obvious red shift phenomenon and enhanced light harvesting ability in the spectra range of 200-800nm as well as much lower recombination rate of the photogenerated charge carriers. The ZTOCN1-800 samples exhibited a 1.69 times specific surface area as pure g-C3N4 by BET analysis, and a 76% degradation efficiency for methyl orange (MO) under visible light irradiation in 180min, about 13 times as that of pure ZnTiO3 and 3 times as that of pure g-C3N4. Moreover, The ZTOCN1-800 samples achieved complete degradation of MB and RhB under visible light irradiation within 90min. This is attributed to the intimate heterostructure interface between g-C3N4 and ZnTiO3 due to ZnTiO3 particles intercalation into the g-C3N4 sheets, which reduced the self-aggregation of the g-C3N4 sheets and greatly facilitated the charge transfer from photo-excited g-C3N4 to ZnTiO3. These were demonstrated by XRD, SEM, EDX, TEM, UV-Vis, PL and photoelectrochemical analysis.