Regulating the d-band center of Cu nanoparticles for efficient photo-driven catalytic CO2 reduction

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 355, С. 124167 - 124167

Опубликована: Май 8, 2024

Язык: Английский

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Single-Atom Ru Biomimetic Nanozyme for the Electrochemical Sensing of Hydrogen Peroxide

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(10), С. 11984 - 11994

Опубликована: Май 15, 2024

A rational design of high-efficiency single atoms represents a desirable goal for the construction efficient electrochemical devices. Nevertheless, their activity is constricted by exposure to reactants. Herein, novel ruthenium (Ru) atom anchored on graphene frameworks (GFs) that feature interconnected porous structures (defined as Ru SA/GFs) synthesized through one-step photoreduction strategy. SA/GFs possess additional structural merits favor promoting reactant transport and maximizing efficacy atoms, which manifest notable amplified electrocatalytic-reduction toward hydrogen peroxide (H2O2) than nanoparticles/GFs, indicating remarkable biomimetic nanozyme-like H2O2. Density functional theory (DFT) calculations reveal with atomically dispersed significantly facilitate reduction efficiency In addition, sensitive SA/GFs-based sensing platform detection H2O2 low limit 0.063 μM developed demonstrated. This work not only exploits an innovative approach synthesize single-atom GFs sensor but also contributes broader utilization in advancement diverse high-performance

Язык: Английский

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Fundamentals and Perspectives of Positively Charged Single-Metal Site Catalysts for CO₂ Electroreduction

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 8, 2025

Single-atom catalysts (SACs) show superior efficiency in electrocatalytic carbon dioxide reduction, a key stage achieving neutrality. Atomically dispersed single-metal sites of SACs are invariably positive valence state; namely, they positively charged (PCSSs). The PCSS generally possess distinctive and asymmetric electronic structure, which enables the activation linear molecules stabilizes miscellaneous intermediates during electrocatalysis. Herein, this review summarizes manner coordination environment, neighboring atoms or groups, interaction with substrate modulate properties PCSSs. Additionally, we overview recently reported theoretical experimental advances terms structure–performance relationship. Furthermore, emphasize previously underappreciated durability CO2 reduction. Finally, discuss several pending issues potential breakthroughs PCSSs for

Язык: Английский

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Side reactions in photocatalytic H2 production by overall water splitting

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Modulating interfacial charges in CTF-based metal-insulator-semiconductor promotes selective CO2 reduction to CH4

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 149027 - 149027

Опубликована: Янв. 30, 2024

Язык: Английский

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Complete Photooxidation of Formaldehyde to CO2 via Ni-Dual-Atom Decorated Crystalline Triazine Frameworks: A DFT Study

Toxics, Год журнала: 2024, Номер 12(4), С. 242 - 242

Опубликована: Март 26, 2024

Formaldehyde (CH2O) emerges as a significant air pollutant, necessitating effective strategies for its oxidation to mitigate adverse impacts on human health and the environment. Among various technologies, photooxidation of CH2O stands out owing affordability, safety, effectiveness. Nitrogen-rich crystalline triazine-based organic frameworks (CTFs) exhibit considerable potential in this domain. Nevertheless, weak unstable adsorption hinders overall efficiency CTF. To address limitation, we incorporate single dual Ni atoms into nitrogen-rich CTFs by density functional theory (DFT) calculations, resulting CTF-Ni CTF-2Ni. This strategic modification significantly enhances capability CH2O. Notably, synergy between activates strong chemical adsorption, thereby reducing energy barrier achieving complete CO2. Moreover, introduction dual-atom over CTF ameliorates visible near-infrared light absorption facilitates photoexcited charge transfer separation. Finally, underlying mechanisms CTF-2Ni are proposed. work offers novel insights rational design photocatalysts through integration CTFs.

Язык: Английский

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Solar-driven photocatalytic nitrogen fixation on transition metal-doped covalent organic frameworks: First-principles study

Applied Physics Letters, Год журнала: 2024, Номер 125(9)

Опубликована: Авг. 26, 2024

Designing highly efficient single-atom catalysts for converting nitrogen into ammonia under ambient temperature conditions holds significant importance. Current research predominantly focuses on electrocatalytic fixation, but compared to that, photocatalytic fixation requires only sunlight as an energy source, making it more environmentally friendly and cost-effective. Developing reduction reaction (NRR) photocatalysts presents a promising yet challenging task. Two-dimensional (2D) covalent organic frameworks (COFs) have garnered interest because of their elevated surface area regular pore structure. This study employs density functional theory calculations investigate the potential NRR using 2D COF TMT-TFPT-COF (TT-COF) supported with 18 different transition metal atoms (TM = Rh, Nb, Os, Mo, Ru, Pt, Ni, Co, V, Cu, Fe, Re, W, Cr, Ta, Mn, Pd, Ti). Through four-step selection process, most photocatalyst is identified. The results indicate that single Re atom loaded onto TT-COF (Re@TT-COF) displays optimal performance, demonstrating excellent catalytic activity selectivity limiting −0.30 V. Furthermore, its good light absorption efficiency, suitable band edge position, photo-generated electron enable spontaneous fixation. Our provides useful guidance rational design COF-based high activity, stability, selectivity.

Язык: Английский

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Ultrafast S-scheme interfacial electron transport enhances CO₂ photoreduction

Chemical Synthesis, Год журнала: 2024, Номер 4(4)

Опубликована: Ноя. 6, 2024

Язык: Английский

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High-efficiency electrochemical H2O2 synthesis by heteroatom-doped NiX/Ni nanocomposites with honeycomb-like porous carbon

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2024, Номер 66, С. 212 - 222

Опубликована: Ноя. 1, 2024

Язык: Английский

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Metallic TiN Nanoparticle Cocatalyst with Hydrogen-Induced Nitrogen Vacancies for Plasmon-Enhanced Full Solar-Spectrum-Driven H₂ Production

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 11, 2025

Solar-driven hydrogen (H2) production from water-splitting reactions has aroused intensive attention but is still challenging. Here, we report a (H2)-induced nitrogen-defective metallic titanium nitride (TiN) cocatalyst-decorated zinc indium sulfide (ZnIn2S4) nanoflower sphere for enhanced full solar-spectrum-driven H2 production. The defective TiN cocatalysts with localized surface plasmon resonance (LSPR) effect obtained by thermal treatment in the atmosphere indicate reduced electrochemical resistance, rich active sites, and features, they were then decorated onto ZnIn2S4 through one-pot solvothermal process. resultant hydrogenated nanoparticle-decorated (TiN/ZnIn2S4, TZ) composite reveals an extended light absorption range, resisted photocorrosion, accelerated charge separation, demonstrating highest yield rate of 2.4 mmol·g–1·h–1 irradiated visible (λ ≥ 420 nm). Meaningfully, optimal TZ-150 could even produce H2, excited NIR (1050 nm), realizing solar-spectrum-induced This work would offer interesting avenue to employ transition metal nitrides solar-spectrum photocatalytic reactions.

Язык: Английский

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