Production of hydrogen via water oxidation using mesoporous‐assembled SiO2@TiN nanocomposite electrocatalyst DOI
Asma A. Alothman, Syed Imran Abbas Shah, Abdul Ghafoor Abid

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(7)

Published: Feb. 14, 2024

Abstract Electrochemical water splitting is one of the promising approaches for production molecular hydrogen as well to meet clean and sustainable energy demand modern world. However, key task research communities design a cost‐effective efficient electrocatalyst contribute positively recent world crises. This study presents novel SiO 2 @TiN nanocomposite utilize it oxygen evolution reaction (OER) an electrocatalysts. The different techniques use characterization nanocomposite. electrochemical investigations encompass linear sweep voltammetry (LSV), cyclic (CV) impedance spectroscopy (EIS) which collectively yield critical parameters assessing electrocatalytic performance. At current density 10 mAcm −2 has substantially lower overpotential 256 mV compared pure TiN. composite also shows smaller tafel slope 40 dec −1 overpotential. demonstrates enhanced redox activity result its synergistic effect. Consequently, increased electrical conductivity TiN facilitates attachment metal oxides more active sites are exposed improve OER fabricated materials.

Language: Английский

Carbon redirection via tunable Fenton-like reactions under nanoconfinement toward sustainable water treatment DOI Creative Commons
Xiang Gao, Zhichao Yang, Wen Zhang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 1, 2024

Abstract The ongoing pattern shift in water treatment from pollution control to energy recovery challenges the energy-intensive chemical oxidation processes that have been developed for over a century. Redirecting pathways of carbon evolution molecular fragmentation polymerization is critical harvesting during oxidation, yet regulation means remain be exploited. Herein, by confining widely-studied system—Mn 3 O 4 catalytic activation peroxymonosulfate—inside amorphous nanotubes (ACNTs), we demonstrate contaminant conversion can readily modulated spatial nanoconfinement. Reducing pore size ACNTs 120 20 nm monotonously improves pathway selectivity toward oligomers, with yield one order magnitude higher under 20-nm nanoconfinement than bulk. interactions Mn ACNTs, reactant enrichment, and pH lowering are evidenced collectively account enhanced polymerization. This work provides an adaptive paradigm redirection variety sustainable purification.

Language: Английский

Citations

48
Mechanism insights into hydrothermal-activated tannic acid (TA) for simultaneously sewage sludge deep dewatering and antibiotics removal DOI
Renjie Chen, Xiaohu Dai, Bin Dong

et al.

Water Research, Journal Year: 2024, Volume and Issue: 256, P. 121619 - 121619

Published: April 19, 2024

Language: Английский

Citations

12
Catalytic Degradation of Hexafluoropropylene Oxide Trimeric Acid during the Hydrothermal Regeneration of Spent Activated Carbon DOI

Qianxin Zhang,

Md Manik Mian, Aimin Zhang

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: 4(6), P. 1391 - 1400

Published: May 29, 2024

Regeneration of granular activated carbon (GAC) after adsorption perfluoroalkyl and polyfluoroalkyl substances is an emerging challenge. This study reports a successful regeneration spent GAC with hexafluoropropylene oxide trimer acid (HFPO–TA) at 120 °C. For the first time, we observed that significantly catalyzed degradation defluorination adsorbed HFPO–TA. The new catalytic mechanism HFPO–TA on was proposed. Reaction intermediates' analysis confirmed ether group near carboxyl split into dimer (HFPO–DA) trifluoroacetic (TFA). Subsequently, HFPO–DA further broken down to produce PFPrA TFA. These intermediates were detected only when not found dissolved in water without GAC. Bond dissociation energy calculations revealed close carboxylic had smaller more susceptible breakage compared decarboxylation reaction gas-phase products contained significant amounts 1H-substituted HFPO–DA, indicating Furthermore, density functional theory indicated site carried positive charge GAC, facilitating through nucleophilic reaction. Finally, efficiency remained 81% fifth adsorption–degradation cycle. offers novel cost-effective strategy for degradative HFPO–TA-adsorbed

Language: Английский

Citations

6
Novel insights into carbon nanomaterials enhancing anammox for nitrogen removal: Effects and mechanisms DOI
Jiawei Liu,

Xiaochuan Ran,

Li Jia

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 905, P. 167146 - 167146

Published: Sept. 17, 2023

Language: Английский

Citations

14
Phosphorus Recovery from Sewage Sludge-Derived Hydrochar: Balancing Phosphorus Recovery, Heavy Metal Concomitant Leaching and Residual Hydrochar Utilization DOI
Chenyu Wang, Han Zhou,

Chaoyue Wu

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 144756 - 144756

Published: Jan. 1, 2025

Language: Английский

Citations

0
Production of hydrogen via water oxidation using mesoporous‐assembled SiO2@TiN nanocomposite electrocatalyst DOI
Asma A. Alothman, Syed Imran Abbas Shah, Abdul Ghafoor Abid

et al.

ChemistrySelect, Journal Year: 2024, Volume and Issue: 9(7)

Published: Feb. 14, 2024

Abstract Electrochemical water splitting is one of the promising approaches for production molecular hydrogen as well to meet clean and sustainable energy demand modern world. However, key task research communities design a cost‐effective efficient electrocatalyst contribute positively recent world crises. This study presents novel SiO 2 @TiN nanocomposite utilize it oxygen evolution reaction (OER) an electrocatalysts. The different techniques use characterization nanocomposite. electrochemical investigations encompass linear sweep voltammetry (LSV), cyclic (CV) impedance spectroscopy (EIS) which collectively yield critical parameters assessing electrocatalytic performance. At current density 10 mAcm −2 has substantially lower overpotential 256 mV compared pure TiN. composite also shows smaller tafel slope 40 dec −1 overpotential. demonstrates enhanced redox activity result its synergistic effect. Consequently, increased electrical conductivity TiN facilitates attachment metal oxides more active sites are exposed improve OER fabricated materials.

Language: Английский

Citations

1