Flow synthesis of photocatalytic semiconductor–metal hybrid nanocrystals

Cohen, Tal; Waiskopf, Nir; Levi, Adar; Stone, David A.; Remennik, Sergei; Banin, Uri

doi:10.1039/d1nr07681g

Cited by 2 publications

(3 citation statements)

References 47 publications

(67 reference statements)

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“…Another recent approach combines flow reaction synthesis with photodeposition to achieve controllable upscale of the HNPs syntheses. Continuous processes have been already utilized for different semiconductor and metal nanocrystals; nevertheless, Cohen et al presented this kind of implementation together with light-induced reaction to achieve CdSe/CdS–Au, ZnSe–Au, and novel ZnSe–Pt NRs …”

Section: Design Principles and Synthesis Of Hybrid Semiconductor–meta...mentioning

confidence: 99%

“…Importantly, as part of the quest for an alternative nontoxic and earth-abundant material to replace the heavy-metal semiconductor in general and Cd-based HNPs in particular, HNPs such as ZnSe–Au, ZnSe–Pt, and CZTS–Au ,, NRs were synthesized and shown to achieve photocatalytic hydrogen evolution activity that exceeded their pristine semiconductor complementary NPs.…”

Section: Hnps At Work: Emerging Applicationsmentioning

confidence: 99%

“…243 A different approach suggested improved charge transfer to the metal sites by passivating surface traps through postsynthesis addition of a CdS layer over CdSe−Pt nanodumbbells resulting in an increase of 6.5 times in the photocatalytic hydrogen generation rate compared to bare CdSe−Pt HNPs. 244 Importantly, as part of the quest for an alternative nontoxic and earth-abundant material to replace the heavy-metal semiconductor in general and Cd-based HNPs in particular, HNPs such as ZnSe−Au, 30 ZnSe−Pt, 76 and CZTS−Au 25,36,53 NRs were synthesized and shown to achieve photocatalytic hydrogen evolution activity that exceeded their pristine semiconductor complementary NPs.…”

Section: Clean Energy−photocatalytic Water Splittingmentioning

confidence: 99%

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Rich Landscape of Colloidal Semiconductor–Metal Hybrid Nanostructures: Synthesis, Synergetic Characteristics, and Emerging Applications

2023

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Nanochemistry provides powerful synthetic tools allowing one to combine different materials on a single nanostructure, thus unfolding numerous possibilities to tailor their properties toward diverse functionalities. Herein, we review the progress in the field of semiconductor−metal hybrid nanoparticles (HNPs) focusing on metal−chalcogenides− metal combined systems. The fundamental principles of their synthesis are discussed, leading to a myriad of possible hybrid architectures including Janus zero-dimensional quantum dot-based systems and anisotropic quasi 1D nanorods and quasi-2D platelets. The properties of HNPs are described with particular focus on emergent synergetic characteristics. Of these, the light-induced charge-separation effect across the semiconductor−metal nanojunction is of particular interest as a basis for the utilization of HNPs in photocatalytic applications. The extensive studies on the charge-separation behavior and its dependence on the HNPs structural characteristics, environmental and chemical conditions, and light excitation regime are surveyed. Combining the advanced synthetic control with the charge-separation effect has led to demonstration of various applications of HNPs in different fields. A particular promise lies in their functionality as photocatalysts for a variety of uses, including solar-to-fuel conversion, as a new type of photoinitiator for photopolymerization and 3D printing, and in novel chemical and biomedical uses.

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Section: Design Principles and Synthesis Of Hybrid Semiconductor–meta...mentioning

confidence: 99%