Pomelo biochar as an electron acceptor to modify graphitic carbon nitride for boosting visible-light-driven photocatalytic degradation of tetracycline  

作　　者：Feng Guo Chunli Shi Wei Sun Yanan Liu Xue Lin Weilong Shi 

机构地区：[1]School of Material Science and Engineering,Beihua University,Jilin 132013,China [2]School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,China [3]School of Material Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China [4]College of Chemistry,Zhengzhou University,Zhengzhou 450001,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第8期1-11,共11页中国化学工程学报（英文版）

基　　金：the founding support from the National Natural Science Foundation of China (21906072, 22006057 and 31971616);the Natural Science Foundation of Jiangsu Province (BK20190982);“Doctor of Mass Entrepreneurship and Innovation” Project in Jiangsu Province;Henan Postdoctoral Foundation (202003013);the Science and Technology Research Project of the Department of Education of Jilin Province (JJKH20200039KJ);the Science and Technology Research Project of Jilin City (20190104120, 201830811);the Project of Jilin Provincial Science and Technology Development Plan (20190201277JC, 20200301046RQ, YDZJ202101ZYTS070)

摘　　要：In this study,biochar(BC)derived from pomelo was prepared via a high-temperature calcination method to modify the graphitic carbon nitride(g-C_(3)N_(4))to synthesize the BC/g-C_(3)N_(4)composite for the degradation of the tetracycline(TC)antibiotic under visible light irradiation.The experimental results exhibit that the optimal feeding weight ratio of biochar/urea is 0.03:1 in BC/g-C_(3)N_(4)composite could show the best photocatalytic activity with the degradation rate of tetracycline is 83%in 100 min irradiation.The improvement of photocatalytic activity is mainly attributed to the following two points:(i)the strong bonding with π-π stacking between BC and g-C_(3)N_(4)make the photogenerated electrons of light-excited g-C_(3)N_(4)transfer to BC,quickly and improve the separation efficiency of carriers;(ii)the introduction of BC reduces the distance for photogenerated electrons to migrate to the surface and increases the specific surface area for providing more active sites.This study provides a sustainable,economical and promising method for the synthesis of photocatalytic materials their application to wastewater treatment.

关 键 词：POMELO BIOCHAR Graphitic carbon nitride Photocatalytic degradation Electron acceptor 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X703[环境科学与工程—环境工程]