Purification and Value-Added Conversion of NO_x under Ambient Conditions with Photo-/Electrocatalysis Technology

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

As primary air pollutants from fossil fuel combustion, the excess emission of nitric oxides (NOx) results in a series atmospheric environmental issues. Although selective catalytic reduction technology has been confirmed to be effective for NOx removal, green purification and value-added conversion under ambient conditions are still facing great challenges, especially nitrogen resource recovery. To address that, photo-/electrocatalysis offers sustainable routes efficient upcycling temperature pressure, which received considerable attention scientific communities. In this review, recent advances critically summarized. The target products reaction mechanisms systems, together with responsible active sites, discussed, respectively. Then, realistic practicability is proposed, including strict performance evaluation criteria application by photo-/electrocatalysis. Finally, current challenges future opportunities proposed terms catalyst design, enhancement, mechanism understanding, practical conditions, product separation techniques.

Язык: Английский

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Regulating the Selectivity of Nitrate Photoreduction for Purification or Ammonia Production by Cooperating Oxidative Half-Reactions

Environmental Science & Technology, Год журнала: 2024, Номер 58(17), С. 7653 - 7661

Опубликована: Апрель 18, 2024

The removal and conversion of nitrate (NO3–) from wastewater has become an important environmental health topic. NO3– can be reduced to nontoxic nitrogen (N2) for remediation or ammonia (NH3) recovery, in which the tailoring selectivity is greatly challenging. Here, by construction CuOx@TiO2 photocatalyst, efficiency enhanced ∼100%. Moreover, precise regulation NH3 (∼100%) N2 (92.67%) accomplished synergy cooperative redox reactions. It identified that photoreduction determined combination different oxidative key roles intermediates reactive radicals are revealed comprehensive situ characterizations, providing direct evidence regulated photoreduction. Different active produced interaction reactants light-generated holes. Specifically, introduction CH3CHO as reactant results generation formate radicals, drives selective reduction into its remediation. alkyl contributed (CH2OH)2 oxidation, facilitate deep upcycling. This work provides a technological basis radical-directed purification resource recovery.

Язык: Английский

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Efficient and selective electroreduction of nitrate to ammonia via interfacial engineering of B-doped Cu nanoneedles

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 361, С. 124597 - 124597

Опубликована: Сен. 12, 2024

Язык: Английский

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Efficient nitrate electroreduction to ammonia over Copper catalysts supported on Electron-Delocalized covalent organic frameworks

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156343 - 156343

Опубликована: Окт. 1, 2024

Язык: Английский

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Copper–nickel–MOF/nickel foam catalysts grown in situ for efficient electrochemical nitrate reduction to ammonia

Journal of Hazardous Materials, Год журнала: 2024, Номер 480, С. 136036 - 136036

Опубликована: Окт. 3, 2024

Язык: Английский

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Hierarchical flower-like MgAl layered double hydroxide microparticles as phosphate porter for its recovery from phosphate-contaminated water

Separation and Purification Technology, Год журнала: 2023, Номер 330, С. 125384 - 125384

Опубликована: Окт. 14, 2023

Язык: Английский

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Enhanced electroreduction of low-concentration nitrate using a Cu-Pd bimetallic cathode system: Performance evaluation, mechanism analysis, and potential applications

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(3), С. 113031 - 113031

Опубликована: Май 12, 2024

Язык: Английский

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Conductivity-mediated in situ electrochemical reconstruction of CuO_x for nitrate reduction to ammonia

Nanoscale, Год журнала: 2024, Номер 16(29), С. 13895 - 13904

Опубликована: Янв. 1, 2024

CP/CuO x with suitable copper valence states obtained by fine-tuning the conductivity of electrochemical reconstruction may provide a competitive cathode catalyst for achieving excellent activity and selectivity NO 3 − -to-NH conversion.

Язык: Английский

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Atomic-level partial replacement of Co in cubic Co3O4 with Cu for effective and stable nitrate electroreduction

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 146119 - 146119

Опубликована: Март 1, 2025

Язык: Английский

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Co-deposition of CuxFey on nickel foam promotes NH3 desorption to enhance nitrate reduction activity and ammonia selectivity

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116708 - 116708

Опубликована: Апрель 1, 2025

Язык: Английский

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