文献类型：期刊文献

英文题名：Bamboo-derived N,Si-CQDs tailored Z-scheme BiOCl/C3N4 photocatalyst for efficient degradation of tetracycline hydrochloride and bamboo pulping effluent: Mechanism, antibacterial activity, and toxicity assessment

作者：Zhu, Yawei[1] Fang, Guigan[1] Shen, Kuizhong[1] Tian, Qingwen[1,2,3,4,5] Ni, Yonghao[5]

第一作者：Zhu, Yawei

通信作者：Shen, KZ[1];Tian, QW[1];Tian, QW[2];Ni, YH[2]

机构：[1]Chinese Acad Forestry, Natl Engn Res Ctr Low Carbon Proc & Utilizat Fores, Natl Key Lab Dev & Utilizat Forest Food Resources, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[2]Shandong Huatai Paper Co Ltd, Shandong Key Lab Biobased Mat & Green Pulp Paperma, Dongying 257335, Shandong, Peoples R China;[3]Shandong Yellow Triangle Biotechnol Ind Res Inst C, Dongying 257335, Shandong, Peoples R China;[4]Guangxi Univ, Coll Light Ind & Food Engn Guangxi, Key Lab Clean Pulp & Papermaking & Pollut Control, Nanning 530004, Peoples R China;[5]Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada

年份：2026

卷号：240

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20260319907865);Scopus(收录号：2-s2.0-105027257175);WOS:【SCI-EXPANDED(收录号:WOS:001668494100001)】；

基金：This work was supported by the National Natural Science Foundation of China (32301682) , Shandong Postdoctora1 Science Foundation (SDCX-ZG-202400110) , and the Fundamental Research Funds of Research Institute of CAF (CAFYBB2020GC016) .

语种：英文

外文关键词：Bamboo-derived N; Si-codoped CQDs; BiOCl; Bamboo pulping effluent degradation

摘要：Biomass-derived carbon quantum dots (CQDs) offer a sustainable approach to design efficient photocatalysts due to their inherent heteroatoms and tunable surface functional groups. In this study, N and Si codoped CQDs (N,SiCQDs) were synthesized from bamboo residues via a hydrothermal process, leveraging bamboo's natural N and Si elements. Subsequently, Z-scheme BiOCl/N,Si-CQDs/C3N4 photocatalysts were prepared, where N,Si-CQDs combine with BiOCl via Bi-O-C bonds to form atomic-scale charge-separation channels and interact with C3N4 via it-it conjugation to enhance electron transfer and catalyst stability. The optimized sample (5CB-CN-10-2) exhibits TCH removal efficiency of 87.6 % at 120 min under simulated solar light irradiation, with apparent rate constant of 0.286 min-1, which is 8.9-fold and 3.1-fold greater than those of BiOCl and BiOCl-C3N4, respectively. Notably, the catalyst sample achieves a COD removal efficiency of 81.4 % from industrial bamboo pulping effluent under conditions of 200 mg/L catalyst dosage, pH 7.5, 6 h and 40 degrees C. Mechanistic investigations revealed that N,Si-CQDs acted as effective electron mediators, enhancing charge separation via Bi-O-C bonds and it-it interactions. Furthermore, the catalyst demonstrates notable antibacterial activity against Staphylococcus aureus and reduced toxicity of the degradation products. This study highlights the potential of naturally N and Si doped CQDs composite photocatalysts for environmental applications.