Adsorption and photodegradation of reactive red 120 with nickel-iron-layered double hydroxide/biochar composites

Yidan Luo; Yonghu Wang; Feng Hua; Mingshan Xue; Xianchuan Xie; Yu Xie; Shuohan Yu; Longshuai Zhang; Zuozhu Yin; Chan Xie; Zhen Hong

doi:10.1016/j.jhazmat.2022.130300

Adsorption and photodegradation of reactive red 120 with nickel-iron-layered double hydroxide/biochar composites

J Hazard Mater. 2023 Feb 5;443(Pt B):130300. doi: 10.1016/j.jhazmat.2022.130300. Epub 2022 Nov 2.

Authors

Yidan Luo¹, Yonghu Wang¹, Feng Hua¹, Mingshan Xue², Xianchuan Xie³, Yu Xie⁴, Shuohan Yu⁴, Longshuai Zhang⁵, Zuozhu Yin¹, Chan Xie¹, Zhen Hong¹

Affiliations

¹ Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province, School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China.
² Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province, School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China. Electronic address: xuems04@mails.ucas.ac.cn.
³ Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China. Electronic address: xchxie@ncu.edu.cn.
⁴ Department of Material Chemistry, Nanchang Hangkong University, Nanchang 330063, China.
⁵ Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China.

PMID: 36345061
DOI: 10.1016/j.jhazmat.2022.130300

Abstract

Layered double hydroxide (LDH) materials were widely applied for adsorption and photodegradation of pollutants for wastewater treatment. New efficient LDH materials with adsorption and photodegradation abilities will be promising candidates for pollutants removal. Hence, a series of NiFe-LDH/biochar (NiFe/BC) were fabricated by the coprecipitation method for synergistic adsorption and photodegradation anionic dyes of reactive red 120 (RR120). The removal experiment showed that the addition of an appropriate amount of biochar into NiFe-LDH enhanced the adsorption capacity and its photocatalytic ability. The optimized NiFe/BC2 composite can remove 88.5 % of RR120 under visible light by adsorption and photocatalysis, which was much better than NiFe-LDH (63.3 %) and biochar (2.6 %). The photodegradation kinetic constant of the NiFe/BC2 composite was 3.1 and 104.8 times that of NiFe-LDH and BC. In addition, active species capture experiments and electron spin resonance (ESR) tests revealed the removal mechanisms of NiFe/BC composites for RR120 removal. This work affords a feasible strategy for preparing LDH-based photocatalyst with excellent adsorption and photocatalytic performance for wastewater treatment.

Keywords: Anionic dyes; Kinetic; LDH-based photocatalyst; Synergistic adsorption and photodegradation; Wastewater treatment.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Environmental Pollutants*
Hydroxides
Iron
Nickel*
Photolysis

Substances

biochar
Nickel
Iron
hydroxide ion
Hydroxides
Environmental Pollutants