Water-Stable Perovskite Nanocrystals to Overcome the Photocatalysis–Stability Trade-Off in Aqueous Photo-RAFT Polymerization DOI

Mengqiang Zhang,

Jingyi Hao,

Chengli Wang

и другие.

ACS Catalysis, Год журнала: 2024, Номер 14(21), С. 16313 - 16323

Опубликована: Окт. 22, 2024

Metal halide perovskite nanocrystals (PNCs) have demonstrated remarkable photocatalytic properties in diverse photochemical reactions owing to their high absorption coefficients and long photogenerated carrier lifetimes. However, catalytic applications been severely hindered by structural incompatibility with polar solvents, water particular, due the labile ionic nature of perovskite. Realization performance PNCs an aqueous medium would significantly expand potential photocatalysis. Herein, judiciously designed CsPbBr3 NCs stabilized on Al2O3 nanoflowers (denoted as A-CsPbBr3 NCs) are utilized water-stable photocatalysts for photomediated reversible addition–fragmentation chain transfer (photo-RAFT) polymerization. The exhibited exceptional stability photostability stabilization effect endowed without sacrificing charge/carrier transport properties. Consequently, photo-RAFT polymerization was successfully performed leveraging under visible light illumination, which inaccessible conventional short-ligand-capped PNCs. effects excitation wavelength, catalyst loading, architectures visible-light-mediated were scrutinized reveal via a photoinduced electron-/energy-transfer mechanism, yielding polymers/copolymers well-defined compositions, well-controlled molecular weights, low polydispersity, chain-end fidelity.

Язык: Английский

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

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

Процитировано

0
Synthesis of novel WO3.0.33H2O microrods assembled discs with remarkable photocatalytic and electrochemical properties DOI

Sana Islam,

Imran Aslam, Muhammad Tahir

и другие.

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 106303 - 106303

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Controllable Synthesis and Heterogeneous Tailoring of 1D Perovskites, Emerging Properties and Applications DOI Creative Commons
En Yang,

Mengna Zhang,

Shuaishuai Wei

и другие.

Advanced Powder Materials, Год журнала: 2024, Номер unknown, С. 100250 - 100250

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

1
Water-Stable Perovskite Nanocrystals to Overcome the Photocatalysis–Stability Trade-Off in Aqueous Photo-RAFT Polymerization DOI

Mengqiang Zhang,

Jingyi Hao,

Chengli Wang

и другие.

ACS Catalysis, Год журнала: 2024, Номер 14(21), С. 16313 - 16323

Опубликована: Окт. 22, 2024

Metal halide perovskite nanocrystals (PNCs) have demonstrated remarkable photocatalytic properties in diverse photochemical reactions owing to their high absorption coefficients and long photogenerated carrier lifetimes. However, catalytic applications been severely hindered by structural incompatibility with polar solvents, water particular, due the labile ionic nature of perovskite. Realization performance PNCs an aqueous medium would significantly expand potential photocatalysis. Herein, judiciously designed CsPbBr3 NCs stabilized on Al2O3 nanoflowers (denoted as A-CsPbBr3 NCs) are utilized water-stable photocatalysts for photomediated reversible addition–fragmentation chain transfer (photo-RAFT) polymerization. The exhibited exceptional stability photostability stabilization effect endowed without sacrificing charge/carrier transport properties. Consequently, photo-RAFT polymerization was successfully performed leveraging under visible light illumination, which inaccessible conventional short-ligand-capped PNCs. effects excitation wavelength, catalyst loading, architectures visible-light-mediated were scrutinized reveal via a photoinduced electron-/energy-transfer mechanism, yielding polymers/copolymers well-defined compositions, well-controlled molecular weights, low polydispersity, chain-end fidelity.

Язык: Английский

Процитировано

0