Enhanced Peroxymonosulfate-Based Fenton-Like Degradation Performance by Confined Radical Activation Path and Non-Radical Activation Path Inside Yolk@Shell Nanoreactor DOI
Wenqi Ding, Wanting Hui,

Yaodan Cao

et al.

Published: Jan. 1, 2023

In peroxonosulfate (PMS)-based Fenton-like reaction, there were two pathways for PMS activation: radical path on transition metal surface and non-radical heteroatom-doped graphitized carbon surface. this work, CoS2/nitrogen-atom doped (NC)@SiO2 yolk@shell nanoreactor was designed, CoS2/NC surface, these paths performed parallelly inside the nanoreactor, leading to an accelerated tetracycline degradation rate. 90.9% of removal efficiency realized within 15 min, much higher than reference samples, advantages illustrated in detail. Moreover, benefiting from SiO2 shell protection, leached cobalt ion only 0.27 mg/L, which 1/20 without shell. During mechanism study, activation identified by electron paramagnetic resonance tests, trapping experiments electrochemical where SO4•- 1O2 responsible (TC) degradation. This study provided a new strategy simultaneously accelerate using it might inspire other high efficient catalyst design PMS-based reaction.

Language: Английский

A 3d Flower-Like Cu-Based Hierarchical Composite and its Derivatives for Efficient Oxygen Evolution Reaction DOI
Yifan Liu, Zhang Zhan,

Rongmei Zhu

et al.

Published: Jan. 1, 2023

Nowadays, extensive attention has been driven to copper-based materials, while seldom reports are about electrocatalysis of water for oxygen evolution reaction (OER) due their inherent electron orbital configuration, which make them difficult absorb intermediates during OER process. To improve the efficiency Cu-based electrocatalysts, great efforts have made design hierarchical architectures, optimize electronic structures and configure multidimensional structures. Herein, we developed a novel composite with unique three-dimensional (3D) nanoflower-like structure assembled by 2D nanosheets (denoted as Cu-NF), using zeolitic imidazolate framework-67 (ZIF-67) precursor via facile Cu ion etching, followed self-assembly strategy. Through controllable low-temperature calcination under N2 atmosphere, series Cu-NF derivatives produced, retained original morphology. The material obtains at 300 °C shows best performance, smallest overpotential 347 mV in 1.0 mol L-1 KOH OER. This work provides simple synthetic strategy fabrication 3D superstructure its potentials electrocatalysts

Language: Английский

Citations

0
Enhanced Peroxymonosulfate-Based Fenton-Like Degradation Performance by Confined Radical Activation Path and Non-Radical Activation Path Inside Yolk@Shell Nanoreactor DOI
Wenqi Ding, Wanting Hui,

Yaodan Cao

et al.

Published: Jan. 1, 2023

In peroxonosulfate (PMS)-based Fenton-like reaction, there were two pathways for PMS activation: radical path on transition metal surface and non-radical heteroatom-doped graphitized carbon surface. this work, CoS2/nitrogen-atom doped (NC)@SiO2 yolk@shell nanoreactor was designed, CoS2/NC surface, these paths performed parallelly inside the nanoreactor, leading to an accelerated tetracycline degradation rate. 90.9% of removal efficiency realized within 15 min, much higher than reference samples, advantages illustrated in detail. Moreover, benefiting from SiO2 shell protection, leached cobalt ion only 0.27 mg/L, which 1/20 without shell. During mechanism study, activation identified by electron paramagnetic resonance tests, trapping experiments electrochemical where SO4•- 1O2 responsible (TC) degradation. This study provided a new strategy simultaneously accelerate using it might inspire other high efficient catalyst design PMS-based reaction.

Language: Английский

Citations

0