文献类型：期刊文献

英文题名：Combining rhombohedral dodecahedral ZnO with g-C3N4 nanosheets for enhanced photocatalytic activity

作者：Tao, Feifei[1,2];He, Yuting[1];Wang, Linxia[1];Liang, Pengfei[1];Zhang, Pingan[1]

机构：[1]Shaoxing Univ, Dept Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China

年份：2024

卷号：195

外文期刊名：JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS

收录：SCI-EXPANDED(收录号：WOS:001304517700001)、、EI(收录号：20243616974334)、Scopus(收录号：2-s2.0-85202577022)、WOS

基金：This work was supported by National Natural Science Foundation of China (NSFC, grant No. 51372154 and 20901051), Zhejiang Provincial Natural Science Foundation of China under Grant No. LY21B010005 and the Project of Shaoxing University (No. 2022LG003). The authors thank Qian Wu from Department of Chemistry and Chemical Engineering, Shaoxing University for the help in the synthesis of the photocatalysts.

语种：英文

外文关键词：Photocatalysis; Degradation; Wastewater remediation

外文摘要：Photocatalysis technology is an effective method to remove pollutants in aquatic environment assisted by solar energy. Herein, the rhombohedral dodecahedral ZnO was dispersed on the g-C3N4 nanosheets for the construction of ZnO/g-C3N4 heterojunction via the combination of solvothermal method and calcination. The obtained ZnO/g-C3N4 heterojunction manifests excellent photocatalytic ability for methyl orange (MO). Especially, the optimal ZnO/g-C3N4 composite with the ZnO content of 10 wt% (ZC-3) exhibits the degradation efficiency of MO as high as 98.0 % under visible-light of 60 min. A series of factors were all-around investigated, such as initial pH, photocatalyst dosage, initial MO concentration, organic anions, humic acid and other dyes. The photocatalytic degradation behavior of MO complies with the first-order reaction kinetics, and the apparent rate constant (kapp) of ZC-3 is 2.3 and 13.4 times than that of pure g-C3N4 and pure ZnO. Meanwhile, the ZnO/g-C3N4 heterojunction exhibits satisfactory cyclic stability and its photocatalytic mechanism is postulated. Therefore, the ZnO/g-C3N4 heterojunction possesses great economic utilization value and is expected to be widely used for wastewater remediation.