Metal@semiconductor core-shell nanocrystals with atomically organized interfaces for efficient hot electron-mediated photocatalysis

Liu, Jia; Feng, Jingwen; Gui, Jing; Chen, Tao; Xu, Meng; Wang, Hongzhi; Dong, Huifang; Chen, Hailong; Li, Xiaowei; Wang, Liang; Chen, Zhuo; Yang, Zhenzhong; Li, Jiajia; Hao, Weichang; Yao, Yuan; Gu, Lin; Weng, Yuxiang; Huang, Yu; Duan, Xiangfeng; Zhang, Jiatao; Li, Yadong

doi:10.1016/j.nanoen.2018.02.040

Cited by 126 publications

(142 citation statements)

References 71 publications

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“…To optimize the channel for transferring HCs, it is necessary to elaborately engineer the interfacial states by achieving high quality monocrystalline nanostructures (both for the metal and semiconductor) and smooth interfacial regions [90,91]. Zhang et al [92] proposed experimentally an aqueous cation exchange method for preparing Au@MS (M = Cd, Zn) with atomically organized interfaces (Figure 7a). A transient absorption spectroscopy measurement showed the strongest signals of these high quality structures compared to Au and Au@MS, based on conventional methods (Figure 7b).…”

Section: Surface and Interfacial Quality Engineeringmentioning

confidence: 99%

Progress in the Utilization Efficiency Improvement of Hot Carriers in Plasmon-Mediated Heterostructure Photocatalysis

et al. 2019

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The effect of plasmon-induced hot carriers (HCs) enables the possibility of applying semiconductors with wide band gaps to visible light catalysis, which becomes an emerging research field in environmental protections. Continued efforts have been made for an efficient heterostructure photocatalytic process with controllable behaviors of HCs. Recently, it has been discovered that the improvement of the utilization of HCs by band engineering is a promising strategy for an enhanced catalytic process, and relevant works have emerged for such a purpose. In this review, we give an overview of the recent progress relating to optimized methods for designing efficient photocatalysts by considering the intrinsic essence of HCs. First, the basic mechanism of the heterostructure photocatalytic process is discussed, including the formation of the Schokkty barrier and the process of photocatalysis. Then, the latest studies for improving the utilization efficiency of HCs in two aspects, the generation and extraction of HCs, are introduced. Based on this, the applications of such heterostructure photocatalysts, such as water/air treatments and organic transformations, are briefly illustrated. Finally, we conclude by discussing the remaining bottlenecks and future directions in this field.

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Section: Surface and Interfacial Quality Engineeringmentioning

confidence: 99%

Progress in the Utilization Efficiency Improvement of Hot Carriers in Plasmon-Mediated Heterostructure Photocatalysis

et al. 2019

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“…Generally, the plasmonic metal cores mainly include Au, Ag, Cu, and semiconductor nanoshells that are usually centered in metallic oxide, sulfide, and selenide [58][59][60][61][62][63]. For instance, Zhang's group reported the synthesis of high-quality Au@CdS core-shell hybrids with atomically organized interfaces [64]. As shown in Figure 1a,b, the high-yield and monodisperse Au@CdS, with quasi-single crystalline shell, was observed.…”

Section: Introductionmentioning

confidence: 98%

Recent Progress in Constructing Plasmonic Metal/Semiconductor Hetero-Nanostructures for Improved Photocatalysis

Chen

Shao

et al. 2018

Catalysts

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Hetero-nanomaterials constructed by plasmonic metals and functional semiconductors show enormous potential in photocatalytic applications, such as in hydrogen production, CO2 reduction, and treatment of pollutants. Their photocatalytic performances can be better regulated through adjusting structure, composition, and components’ arrangement. Therefore, the reasonable design and synthesis of metal/semiconductor hetero-nanostructures is of vital significance. In this mini-review, we laconically summarize the recent progress in efficiently establishing metal/semiconductor nanomaterials for improved photocatalysis. The defined photocatalysts mainly include traditional binary hybrids, ternary multi-metals/semiconductor, and metal/multi-semiconductors heterojunctions. The underlying physical mechanism for the enhanced photocatalysis of the established photocatalysts is highlighted. In the end, a brief summary and possible future perspectives for further development in this field are demonstrated.

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“…We have synthesized plasmonic metal@semiconductor HNCs via a reverse cation exchange-enabled nonepitaxial growth strategy [36]. By this way, the as-formed plasmonic HNCs have been found with excellent plasmon enhancement and photocatalysis applications [37,38].…”

Section: Introductionmentioning

confidence: 99%

Micro-scale 2D quasi-nanosheets formed by 0D nanocrystals: from single to multicomponent building blocks

Chang

Liu

et al. 2020

Sci. China Mater.

Self Cite

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Self-assembly of colloidal nanocrystals (NCs) into large-scale superlattices with complex and controllable structures has attracted extensive attention due to their collective properties and promising device applications. Plasmonic NCs are very popular for long-range ordered superstructures by virtue of their collective nanogaps for electromagnetic field enhancement, in particular bulk-scale single-layer assembly. Large-area two-dimensional (2D) quasinanosheets (QNSs) composed of mono-component Au NCs or multi-component Au@ZnS core-shell hetero-nanocrystals (HNCs) were successfully prepared, via careful solvent evaporation-induced interfacial self-assembly. The entire selfassembly process was carried out on the liquid-air surface and mediated simply by tuning the operating temperatures and concentrations of the NCs. Specifically, monolayer and double-layer 2D QNSs in tens of micrometers scale with different stacking models were fabricated by precisely controlling the solvent evaporation rate and colloidal concentration.

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Metal@semiconductor core-shell nanocrystals with atomically organized interfaces for efficient hot electron-mediated photocatalysis

Cited by 126 publications

References 71 publications

Progress in the Utilization Efficiency Improvement of Hot Carriers in Plasmon-Mediated Heterostructure Photocatalysis

Progress in the Utilization Efficiency Improvement of Hot Carriers in Plasmon-Mediated Heterostructure Photocatalysis

Recent Progress in Constructing Plasmonic Metal/Semiconductor Hetero-Nanostructures for Improved Photocatalysis

Micro-scale 2D quasi-nanosheets formed by 0D nanocrystals: from single to multicomponent building blocks

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