Sustainable Cu2(OH)2CO3/g-C3N4/cellulose acetate-derived porous composite membrane for Congo red and tetracycline removal with photocatalytic self-cleaning properties under natural solar irradiation

Kong，Lingchao1; Wang，Qinyu2; Wang，Yi3; Yan，Qinlin1; Qiu，Wenhui1; Zheng，Chunmiao1,4

2023-03-01

10.1016/j.horiz.2023.100047

Sustainable Horizons   Impact Factor & Quartile

2772-7378

A highly efficient and sustainable Cu/CN@CA composite membrane was synthesized for the removal of typical dyes and antibiotics by incorporating a Cu(OH)CO/g-CN heterojunction (Cu/CN) onto a cellulose acetate (CA) membrane. The 0.2Cu/CN@CA membrane with optimized Cu/CN doping achieved superior Congo red (CR) and tetracycline (TC) adsorption capacities of 250.8 and 48.43 mg/g, respectively. Notably, the exhausted 0.2Cu/CN@CA after adsorption saturation could be effectively self-cleaned under natural solar irradiation. Consecutive adsorption-photocatalytic experiments revealed its fine stability and recyclability. Mechanistic exploration based on experimental analysis and DFT (Density Function Theory) calculations revealed that cellulose acetate accommodates the charge transfer interactions between g-CN and Cu(OH)CO, wherein many photogenerated electrons were generated and migrated from g-CN to Cu(OH)CO. This type II heterojunction transfer pathway induced the strong oxidizability of the 0.2Cu/CN@CA membrane with plenty of active species for the photocatalytic degradation of the adsorbed CR and TC contaminants under solar light irritation. This study provided a novel sustainable membrane-based adsorbent for the enhanced dye and antibiotic contaminant remediation of aquatic environments.

Adsorption Composite membranes Cupric subcarbonate g-C3N4 Photocatalytic self-cleaning

English

First ; Corresponding

2-s2.0-85163435055

Scopus

1.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
2.State Key Laboratory of Urban Water Resource and Environment (SKLUWRE),School of Environment,Harbin Institute of Technology,Harbin,150090,China
3.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.EIT Institute for Advanced Study,Ningbo,Zhejiang,315200,China

Kong，Lingchao,Wang，Qinyu,Wang，Yi,et al. Sustainable Cu2(OH)2CO3/g-C3N4/cellulose acetate-derived porous composite membrane for Congo red and tetracycline removal with photocatalytic self-cleaning properties under natural solar irradiation[J]. Sustainable Horizons,2023,5.

Kong，Lingchao,Wang，Qinyu,Wang，Yi,Yan，Qinlin,Qiu，Wenhui,&Zheng，Chunmiao.(2023).Sustainable Cu2(OH)2CO3/g-C3N4/cellulose acetate-derived porous composite membrane for Congo red and tetracycline removal with photocatalytic self-cleaning properties under natural solar irradiation.Sustainable Horizons,5.

Kong，Lingchao,et al."Sustainable Cu2(OH)2CO3/g-C3N4/cellulose acetate-derived porous composite membrane for Congo red and tetracycline removal with photocatalytic self-cleaning properties under natural solar irradiation".Sustainable Horizons 5(2023).