Oxygenated functional group-driven spontaneous fabrication of Pd nanoparticles decorated porous carbon nanosheets for electrocatalytic hydrodechlorination of 4-chlorophenol

Qi Wang; Lingxi Zhou; Qian Chen; Mingyue Mao; Weidong Jiang; Yan Long; Guangyin Fan

doi:10.1016/j.jhazmat.2020.124456

Oxygenated functional group-driven spontaneous fabrication of Pd nanoparticles decorated porous carbon nanosheets for electrocatalytic hydrodechlorination of 4-chlorophenol

J Hazard Mater. 2021 Apr 15:408:124456. doi: 10.1016/j.jhazmat.2020.124456. Epub 2020 Nov 2.

Authors

Qi Wang¹, Lingxi Zhou², Qian Chen¹, Mingyue Mao¹, Weidong Jiang³, Yan Long¹, Guangyin Fan⁴

Affiliations

¹ College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China.
² State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
³ School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, China.
⁴ College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China. Electronic address: fanguangyin@sicnu.edu.cn.

PMID: 33223316
DOI: 10.1016/j.jhazmat.2020.124456

Abstract

Researchers have been committed to reducing the hazardous pollutants by developing efficient catalysts while ignoring the pollution caused by the use of toxic surface capping agents, reductants and/or organic solvents in the catalyst preparation process. To alleviate such problems, we here report a novel one-step oxygenated functional group-driven electroless deposition strategy to synthesize clean and uniformly distributed Pd nanoparticles (NPs) using porous carbon nanosheets (PCN) as both substrates and reducing agents. It is observed that the oxygenated functional groups enriched PCN possesses a low work function and allows the spontaneous reduction of PdCl₄^2- ions to Pd NPs deposited on the PCN support (Pd/PCN). The particle size of Pd NPs can be flexibly modulated by simply controlling the immersing time and thereby their maximum catalytic performances can be achieved. Specifically, the optimal Pd/PCN-08 with a Pd loading of 3.0 wt% shows an excellent activity with a turnover frequency of 0.38 min^-1 for electrocatalytic hydrodechlorination (ECH) of 4-chlorophenol (4-CP), superior to the previously reported materials. The stability of Pd/PCN-08 for 4-CP ECH is impressive in repetitive cycles. This work proposes a facile and efficient strategy to synthesize high-performance catalysts for detoxifying the hazardous organic pollutants.

Keywords: Chlorophenol; Electrocatalytic Hydrodechlorination; Electroless deposition; Highly active catalyst; Oxygenated functional group.

Publication types

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