Ammonia Synthesis with Visible Light and Quantum Dots DOI
Vanshika Jain, Shreya Tyagi, Pradyut Roy

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 17, 2024

Light-assisted synthesis of ammonia from nitrate and nitrite sources is a sustainable approach to reduce the burden energy-intensive Haber-Bosch process. However, poor selectivity need for UV-active photocatalysts are current bottlenecks in sources. Herein, we introduce selective visible-light-driven production ions with indium phosphide quantum dots (InP QDs) as photocatalyst. The presence catalytic sites microenvironment modulation through an interplay catalyst-reactant interactions resulted efficient formation under visible light. Ammonia was produced attractive yield ∼94% both aqueous gaseous phases within 2 h visible-light irradiation at room temperature. A decent observed sunlight well, strengthening translational prospects InP QD photocatalysts. Mechanistic investigations ascertained negligible role competing hydrogen evolution direct reduction, confirming active participation photoexcited charge carriers QDs synthesis. Kinetic studies revealed energetically challenging nitrate-to-nitrite conversion rate-determining step, subsequent reactions proceeding ∼100% ammonia. series experiments concluded that water proton source QD-photocatalyzed Our study shows impact rationally designed core surface QD-based developing routes produce beyond

Language: Английский

0D/1D p-n heterostructured composite of bismuth ferrite perovskite clusters on sodium titanate nanotube arouse exceptional blue-light-driven photooxidation DOI

Qiuhan Li,

Yifei Zhang,

Liangliang Xu

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124706 - 124706

Published: Oct. 1, 2024

Language: Английский

Citations

8
人工光合固氮 DOI
Deshan Zhang,

Y. F. Liang,

Yang Yu

et al.

Chinese Science Bulletin (Chinese Version), Journal Year: 2025, Volume and Issue: 70(7), P. 835 - 849

Published: Feb. 18, 2025

Citations

1
Prolonging Lifetime of Hot Electrons Integrated with Microenvironment Regulation on Atomically-Dispersed Amphiphilic Quantum Dots for Photo-Reductive Hydroarylation of Alkenes in Aqueous Solution DOI

Liu-Meng Mo,

Dong‐Dong Wei,

Weihua Xie

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125295 - 125295

Published: March 1, 2025

Language: Английский

Citations

1
Concurrent Photocatalytic CO2 Reduction and 1‐Phenylethanol Oxidation Regulated by Chloride Ion‐Capped CdS@ZnxCd1‐xS@ZnS QDs DOI Open Access

Huakang Yang,

Zining Zhang, Yudong Guo

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Abstract Solar‐driven photocatalytic CO 2 reduction coupled with the oxidation of organic compounds to value‐added chemicals is a promising strategy, which can utilize both photogenerated electrons and holes. Here, gradient alloyed CdS@Zn x Cd 1‐x S@ZnS quantum dots (quasi‐Type II band structure) capped Cl − ligands demonstrate great potential in simultaneous conversion 1‐phenylethanol into syngas pinacol. The passivation maximizes exposure surface‐active sites improves their electronic structure, providing prerequisite for efficient execution redox reactions. More importantly, p–π conjugation between chloride‐ion benzene ring provides bridge ultrafast transfer holes, greatly promotes activation Cα─H bond release mass reactive free hydrogen. This process effectively lowers thermodynamic energy barrier reduction, even as excessively high kinetic barriers arising from accumulation excess protons also enable them self‐couple, leading generation (CO ≈ 75 mmol g −1 h ; selectivity 69.86%). work insights future artificial photosynthesis achieve activity cost‐effective storable renewable resources co‐production substances through synergistic oxidation.

Language: Английский

Citations

0
Low-dimensional materials for ammonia synthesis DOI
Apabrita Mallick, Carmen C. Mayorga‐Martinez, Martin Pumera

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Low-dimensional materials (LDMs), including 0D, 1D, and 2D nanostructures their heterostructures, are reviewed for applications in photocatalytic, electrocatalytic, photoelectrocatalytic synthesis of value-added ammonia.

Language: Английский

Citations

0
Ammonia Synthesis with Visible Light and Quantum Dots DOI
Vanshika Jain, Shreya Tyagi, Pradyut Roy

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 17, 2024

Light-assisted synthesis of ammonia from nitrate and nitrite sources is a sustainable approach to reduce the burden energy-intensive Haber-Bosch process. However, poor selectivity need for UV-active photocatalysts are current bottlenecks in sources. Herein, we introduce selective visible-light-driven production ions with indium phosphide quantum dots (InP QDs) as photocatalyst. The presence catalytic sites microenvironment modulation through an interplay catalyst-reactant interactions resulted efficient formation under visible light. Ammonia was produced attractive yield ∼94% both aqueous gaseous phases within 2 h visible-light irradiation at room temperature. A decent observed sunlight well, strengthening translational prospects InP QD photocatalysts. Mechanistic investigations ascertained negligible role competing hydrogen evolution direct reduction, confirming active participation photoexcited charge carriers QDs synthesis. Kinetic studies revealed energetically challenging nitrate-to-nitrite conversion rate-determining step, subsequent reactions proceeding ∼100% ammonia. series experiments concluded that water proton source QD-photocatalyzed Our study shows impact rationally designed core surface QD-based developing routes produce beyond

Language: Английский

Citations

2