Mechanisms on Oxygen Activation for Efficient 2-Chlorophenol Mineralization on CoOx/BiO2–x Nanosheets Under Full-Spectrum Irradiation DOI
Tao Song,

Fu He,

Rui Yan

et al.

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(23), P. 9578 - 9585

Published: June 3, 2024

Herein, ultrathin CoOx/BiO2–x nanosheets (∼4 nm) have been in situ synthesized by using a microwave-assisted hydrothermal method. The amount-optimized display 4.7-fold higher photocatalytic activity than classical P25 TiO2 for 2-chlorophenol (2-CP) degradation under full-spectrum irradiation with exceptional mineralization. high photoactivity is attributed to the excitation-wavelength-dependent O2 activation involved mainly produced •O2– via charge separation and 1O2 through energy transfer ultraviolet–visible (UV–vis, <450 visible-near-infrared (vis-NIR, >550 light irradiation, respectively. Moreover, modified CoOx dispersion could effectively trap photogenerated holes, thereby promoting also facilitating formation of from holes. By means liquid chromatography tandem mass spectra theoretical simulation, generated nucleophilic electrophilic radicals exhibit distinct preferences attacking different sites 2-CP, resulting direct ring-opening processes ultimately enabling rapid

Language: Английский

Designing hierarchically porous zero-valent iron via 3D printing to degrade organic pollutants by activating peroxymonosulfate using high-valent iron-oxo species DOI
Sheng Guo, Meng Chen,

Yu Wei

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146523 - 146523

Published: Oct. 9, 2023

Language: Английский

Citations

66
Interfacial Mo–S bond modulated S-scheme Mn0.5Cd0.5S/Bi2MoO6 heterojunction for boosted photocatalytic removal of emerging organic contaminants DOI
Shijie Li, Changjun You, Fang Yang

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2025, Volume and Issue: 68, P. 259 - 271

Published: Jan. 1, 2025

Language: Английский

Citations

30
A review of g‐C3N4‐based photocatalytic materials for photocatalytic CO2 reduction DOI Creative Commons
Jing Tang, Chuanyu Guo, Tingting Wang

et al.

Carbon Neutralization, Journal Year: 2024, Volume and Issue: 3(4), P. 557 - 583

Published: May 8, 2024

Abstract Currently, the concentration of carbon dioxide (CO 2 ) has exceeded 400 ppm in atmosphere. Thus, there is an urgent need to explore CO reduction and utilization technologies. Photocatalytic technology can convert valuable hydrocarbons (CH 4 , CH 3 OH, C H 5 etc.), realizing conversion solar energy chemical as well solving problems fossil fuel shortage global warming. Graphitic nitride (g‐C N ), a two‐dimensional nonmetallic semiconductor material, shows great potential field photoreduction due its moderate bandgap, easy synthesis method, low cost, visible light response properties. This review elaborates research progress g‐C ‐based photocatalysts for photocatalytic reduction. The modification strategies (e.g., morphology engineering, elemental doping, crystallinity modulation, cocatalyst modification, constructing heterojunction) application have been discussed detail. Finally, challenges development prospects materials are presented.

Language: Английский

Citations

18
Enhanced degradation of organic contaminant with bamboo shoot skin-based Fe/N co-doped porous hydrochar via persulfate activation DOI
Jianhua Qu, Kaige Li, Qiyuan Wang

et al.

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: unknown, P. 140881 - 140881

Published: Jan. 1, 2024

Language: Английский

Citations

15
Oxygen Vacancy-Enhanced Electrocatalytic Degradation of Tetracycline over a Co3O4–La2O3/Peroxymonosulfate System DOI
Wen Zhao, Guangtao Wang, Pan Li

et al.

ACS ES&T Water, Journal Year: 2024, Volume and Issue: 4(4), P. 1411 - 1421

Published: Feb. 1, 2024

Peroxymonosulfate (PMS) activated by metal oxides has been developed as a promising approach for advanced oxidation processes in the treatment of antibiotic containing wastewater; however, rapid and effective activation PMS still lacks reasonable catalyst-oriented design. Here, fabricating Co3O4–La2O3 bimetallic oxide electrode to implement defect engineering, we report an oxygen vacancy (OV)-mediated electrocatalytic system degradation tetracycline (TC). The rare earth La2O3 was used modify Co3O4 introduce OVs active sites, where is produce reactive species. composites facilitate generation singlet (1O2), which mediates via non-radical pathway. When ratio Co La 2:1, Co3O4–La2O3/PMS had efficiency TC more than 97.50% mineralization rate up 62.97% within 40 min. Overall, findings on defect-engineered materials could provide strategy wastewater with low energy consumption pollution.

Language: Английский

Citations

10
Effect of Metal Site Mobility of Single-Atom Catalyst on Photocatalytic Water Oxidation DOI

Yin-xiao Sheng,

Cun‐biao Lin,

Zhi-rui Luo

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: 16(9), P. 2166 - 2174

Published: Feb. 20, 2025

Understanding the impact of catalytic site diffusion on photocatalytic performance is crucial to rational design water oxidation photocatalysts. In this study, we combined ab initio nonadiabatic molecular dynamics (NAMD) with density functional theory (DFT) calculations investigate single-atom transition metals (Ni, Pd) loaded HfS2 and their effects oxidation. Transition state indicated that barriers (0.58 eV) enable possibility between most stable HS metastable HHf for Pd/1T-HfS2. Moreover, electronic structure simulations reveal distinct properties Pd/1T-HfS2:Pd adsorption at generate a deep defect (∼0.5 eV above valence band maximum (VBM)), while introduces shallow near VBM (∼0.2 VBM). Compared pristine 1T-HfS2 (6.2 ns), electron-hole recombination time extends 7 ns Pd(HS)/1T-HfS2 but decreases 1.7 Pd(HHf)/1T-HfS2, driven by position Pd-induced states. Thermodynamically, Pd(HHf)/1T-HfS2 show pronounced difference, approximately 0.08 V in limiting potential. Generally, study enhances understanding dynamic catalysts.

Language: Английский

Citations

1
Advances in Atomically Dispersed Metal and Nitrogen Co‐Doped Carbon Catalysts for Advanced Oxidation Technologies and Water Remediation: From Microenvironment Modulation to Non‐Radical Mechanisms DOI
Wenjie Ma, Xiaohui Ren, Jiahao Li

et al.

Small, Journal Year: 2023, Volume and Issue: 20(22)

Published: Dec. 19, 2023

Abstract Atomically dispersed metal and nitrogen co‐doped carbon catalysts (M‐N‐C) have been attracting tremendous attentions thanks to their unique MN x active sites fantastic catalytic activities in advanced oxidation technologies (AOTs) for water remediation. However, precisely tailoring the microenvironment of at atomic level is still an intricate challenge so far, understanding non‐radical mechanisms persulfate activation exists many uncertainties. In this review, latest developments on modulation strategies atomically M‐N‐C including regulation central atoms, coordination numbers, heteroatoms, synergy between single‐atom (SACs) with species are systematically highlighted discussed. Afterwards, progress underlying limitations about typical pathways from production singlet oxygen, electron transfer mechanism generation high‐valent well demonstrated inspire intrinsic insights M‐N‐C/persulfate systems. Lastly, perspectives remaining challenges opportunities further development carbon‐based SACs environment remediation also pointed out. It believed that review will be much valuable design systems promote wide application various fields.

Language: Английский

Citations

19
Single-atom catalysts derived from biomass: low-cost and high-performance persulfate activators for water decontamination DOI Open Access
Yidi Chen,

Yanhu Yang,

Nanqi Ren

et al.

Current Opinion in Chemical Engineering, Journal Year: 2023, Volume and Issue: 41, P. 100942 - 100942

Published: July 4, 2023

Language: Английский

Citations

18
Porous hydrochar loaded nZVI as an efficient catalyst to activate persulfate for phenol degradation: Performance and mechanism DOI
Bo Cao, Jianhua Qu,

W. H. Bian

et al.

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 444, P. 141221 - 141221

Published: Feb. 15, 2024

Language: Английский

Citations

8
Olive mill waste bio-based catalyst application in advanced oxidation processes for wastewater treatment DOI Creative Commons
Kleper de Oliveira Rocha, Francisco da Silva Brandão,

Cátia Mendes

et al.

Catalysis Today, Journal Year: 2024, Volume and Issue: 432, P. 114618 - 114618

Published: March 2, 2024

This study explores the physicochemical capacities of solid wastes from olive oil mills (olive stone, OS, and pomace, OP), in obtaining catalysts to be applied heterogeneous Fenton persulfate processes. Through treatments impregnation iron by hydrothermal deposition wetness (WI) different were produced, tested characterized. The mill wastewater (OMW) studied this work is a synthetic solution with five phenolic compounds mimic real effluent. removal efficiency acids organic load (COD) present type effluent was evaluated. In treatment wastewater, almost 100% COD removed using OS OP-FeWI as process. sulfate radical-based reaction, 3,4–Dihydroxybenzoic acid slightly more degradable than other which confirms selectivity radicals. materials subject thermal processes revealed an interesting adsorption capacity. procedure not only reduces environmental impact OMW, but also promotes implementation new circular economy approaches.

Language: Английский

Citations

6