Effect of benzoic acid and dopamine hydrochloride as a modulator in the water resistance of Universitetet i Oslo-67: Adsorption performance and mechanism

Xiaodong Zhang; Shuting Ma; Bin Gao; Fukun Bi; Qinhong Liu; Qiangyu Zhao; Jingcheng Xu; Guang Lu; Yiqiong Yang; Minghong Wu

doi:10.1016/j.jcis.2023.07.205

Effect of benzoic acid and dopamine hydrochloride as a modulator in the water resistance of Universitetet i Oslo-67: Adsorption performance and mechanism

J Colloid Interface Sci. 2023 Dec:651:424-435. doi: 10.1016/j.jcis.2023.07.205. Epub 2023 Aug 1.

Authors

Xiaodong Zhang¹, Shuting Ma², Bin Gao², Fukun Bi², Qinhong Liu², Qiangyu Zhao², Jingcheng Xu³, Guang Lu⁴, Yiqiong Yang⁵, Minghong Wu⁶

Affiliations

¹ School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China; Shanghai Non-carbon Energy Conversion and Utilization Institute, Shanghai 200240, China. Electronic address: zhangxiaodong@usst.edu.cn.
² School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
³ School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jun Gong Road, Shanghai, 200093, China.
⁴ Scholl of Civil Engineering, Liaoning Shihua University, Fushun, Liaoning, 113001, China.
⁵ School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China. Electronic address: yangyiqiong@usst.edu.cn.
⁶ School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.

PMID: 37549527
DOI: 10.1016/j.jcis.2023.07.205

Abstract

The severe hazards on ecological environment and human body caused by volatile organic compounds (VOCs) have attracted worldwide substantial attention. In this research, a series of novel modified Universitetet i Oslo-67 (UiO-67) with water resistance were prepared and characterized, which had modified by benzoic acid and dopamine hydrochloride (67-ben-DH). On this basis, the adsorption performance, adsorption kinetics, defect engineering and water resistance of adsorbent were investigated. The results indicated that the excellent pore structure and specific surface area of 67-ben-DH-6 (molar ratio of Zr⁴⁺ to DH was 1:6) were retained while the adsorption performance and water resistance of the adsorbent were improved. Due to more defects, excellent adsorption diffusion and strong π-π interactions of 67-ben-DH-6, it performed the maximum adsorption capacity of toluene (793 mg g^-1). Furthermore, the outstanding water resistance was attributed to the fact that N element of DH reduced the affinity of the adsorbent with water. Finally, the density functional theory (DFT) calculations showed that the adsorbent 67-ben-DH-6 had the maximum adsorption energy for toluene (-99.4 kJ mol^-1) and the minimum adsorption energy for water (-17.8 kJ mol^-1). Thus, the potential mechanism of 67-ben-DH for efficient toluene adsorption and water resistance was verified from a microscopic perspective.

Keywords: DFT calculation; Defects; Dopamine hydrochloride; Water resistance.