Efficient Removal of Hg2+ from Wastewater by a Novel Cu-Modified Attapulgite: Adsorption Performance and Mechanism DOI
Chongming Chen, Dong Li,

Jinxing Yu

et al.

Korean Journal of Chemical Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 19, 2024

Language: Английский

Fast NO2 gas pollutant removal using CNTs/TiO2/CuO/zeolite nanocomposites at the room temperature DOI Creative Commons
Ghobad Behzadi Pour,

Elahe Shajee nia,

Elham Darabi

et al.

Case Studies in Chemical and Environmental Engineering, Journal Year: 2023, Volume and Issue: 8, P. 100527 - 100527

Published: Oct. 15, 2023

In this study, fast gas adsorbent nanocomposites based on the carbon nanotubes (CNTs)/titanium dioxide (TiO2)/copper oxide (CuO)/Zeolite (CNTs/TiO2/CuO/Zeolite) and CNTs/TiO2 structures for nitrogen (NO2) removal have been investigated. The nanocomposite films were deposited glass substrate using push coating method. characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET). BET test was carried out to study total surface diameter of pores within matrices nanocomposites. For nanocomposite, NO2 concentration (NGC) decreased from 102 ppm 41 ppm, CNTs/TiO2/CuO/Zeolite NGC 172 34 ppm. results revealed that efficiency adsorption capacity 80 % 138 mg g−1, respectively with reduction rate K = 0.37 min−1. additional exhibited is higher than CNTs/TiO2. This promising opens new insight investigating capability these materials pollutants industrial regions as environmentally friendly filters.

Language: Английский

Citations

41
The removal of toluene by thermoscatalytic oxidation using CeO2-based catalysts:a review DOI
Yang Bai, Yang Xu,

Jiateng Chen

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 351, P. 141253 - 141253

Published: Jan. 21, 2024

Language: Английский

Citations

11
Unveiling mechanism and the roles of distinct active sites over Cu/Beta@CeO2 with strong core-shell interface interaction for simultaneous removal of NO and toluene DOI

Su Jiang,

Liangpeng Zhang,

Lingkui Zhao

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145979 - 145979

Published: Sept. 9, 2023

Language: Английский

Citations

17
A tale of two pollutants: The mutual promotion mechanism of synergistic catalytic elimination of Hg0 and chlorobenzene on V2O5–WO3/TiO2 catalyst DOI
Jianqiang Shi, Jianjun Chen, Bing Wang

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147839 - 147839

Published: Dec. 6, 2023

Language: Английский

Citations

11
Synergetic NOx Removal and Hg0 Oxidation over V2O5–WO3/TiO2 Catalysts in a Simulated Fast SCR Atmosphere: Catalytic Performance and Hg0 Oxidation Mechanism DOI
Wenbo Jia, Yueyuan Wang,

Shaohua Ling

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(9), P. 8035 - 8043

Published: April 17, 2024

Fast selective catalytic reduction (SCR) atmosphere can significantly improve the NOx removal activity of VWTi catalysts, while performance and reaction pathway Hg0 oxidation in a fast SCR are still unclear. In this paper, simultaneous over catalysts simulated was investigated for first time. The results showed that possessed wide active temperature window high atmosphere. X-ray photoelectron spectroscopy (XPS) Hg temperature-programmed desorption (Hg-TPD) methods were used to investigate process Combined with homogeneous experiment results, two domination routes proposed. One adsorbed could react surface species form HgO. other route gaseous be oxidized directly Hg(NO3)2 by NO2. Particularly, notably weaken inhibition effect NH3 on oxidation, thus improving

Language: Английский

Citations

4
Copper/Nickel/Cobalt modified molybdenum-tungsten-titanium dioxide-based catalysts for multi-pollution control of nitrogen oxide, benzene, and toluene: Enhanced redox capacity and mechanism study DOI
Yin Chen, Lin Chen, Yanfen Liao

et al.

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 659, P. 299 - 311

Published: Dec. 27, 2023

Language: Английский

Citations

9
Unraveling the multi-pollutant removal using M-MoWTi (M = Fe, Mn, Cr) catalyst: experiment and mechanistic study of competition for active sites DOI Creative Commons
Zhuofan Chen, Lin Chen, Yanfen Liao

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(11), P. 17372 - 17386

Published: Feb. 10, 2024

Multi-pollutant removal (MPR) of NO and VOCs simultaneously is efficient flue gas treatment in coal-fired power plants. But reducing the competition for active sites between NH3, NO, C6H6, C7H8 remains challenging. Herein, Cr, Mn, Fe were respectively doped to MoWTi catalyst via wet impregnation. The Fe3+ + Mo5+ ↔ Fe2+ Mo6+ redox cycle led an increased proportion low valence ions (Mo5+ W5+) facilitated creation oxygen vacancies with several sites. It also possessed plentiful mild strong acid ideal ratio. These factors enhanced catalytic activity Fe-MoWTi. Remarkable MPR efficiencies achieved under industrial SCR condition, characterized by but high SO2 levels at 340 °C, rates reaching 89.85%, 97.57%, 86.30% respectively. Theory calculations further revealed that Fe-MoWTi favor NH3 O2 adsorptions. elimination was found follow both Eley–Rideal (E-R) Langmuir–Hinshelwood (L–H) processes, supported situ DRIFTS analysis. reactions involving NO/NO2/nitrite/nitrate occurred NH3(ads)/ NH4+(ads)/NH2 (ads). C6H6 underwent gradual oxidation, formatting alcohols, aldehydes, acids, maleic before eventually being mineralized gaseous CO2 H2O. Findings hold significant potential application, providing guidance development catalysts improved resistance against poisoning capabilities.

Language: Английский

Citations

3
Shape Effect of Cu and Ce Species over Modified Attapulgite Catalysts: Dual Reactivity and Sulfur Resistance in NH3–SCR and NH3–SCO DOI
Yue Cao,

Xianghongyang Chen,

Shaodong Zhu

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Targeted regulation of the catalytic activity and selectivity is key to advancing applications NH3–SCO NH3–SCR catalysts. Herein, significant differences were found in NH3 NOx removal as well sulfur resistance copper- cerium-modified attapulgite obtained by different methods. Their structural chemical characteristics thus investigated based on various characterization techniques reveal factors affecting performance. Although influenced multiple properties, oxidation catalysts was positively correlated with their proportion redox ability asymmetric oxygen vacancies (Cu+–OV–Ce3+). The Cu-doped bulk crystalline CeO2 structure excessive promoted byproducts formation inhibited NO reduction, while weak interaction between highly dispersed Cu Ce oxides accompanied inadequate acid quantity restricted NO. In comparison, good performances exhibited clusters-coated CuOx because formed active nitro compounds could be consumed NH3. High also achieved from this since interface Cu–O–Ce sites protected. This work provides information for directed synthesis performance optimization copper–cerium-based removal.

Language: Английский

Citations

0
Enhanced ultrasound-assisted controllable growth assembly of MoS2/Fe3O4 materials for piezoelectric Fenton reaction degradation of sildenafil DOI

Zi-ang Jia,

Qing-rui Zeng,

Jinping Cheng

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: 368, P. 125778 - 125778

Published: Jan. 31, 2025

Language: Английский

Citations

0
Regulating the Cu-Ce interaction of CuCeOx/SAPO-34 catalysts to achieve a wide reaction temperature window for the collaborative synergistic removal of NOx and toluene at low temperatures and reaction mechanisms DOI
Rong Liu,

Xuehui Jia,

Lin Li

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 492, P. 138103 - 138103

Published: April 2, 2025

Language: Английский

Citations

0