Controlling Structural Symmetry of a Hybrid Nanostructure and its Effect on Efficient Photocatalytic Hydrogen Evolution

Zhao, Qian; Ji, Muwei; He, Qian; Dai, Baosong; Weng, Lin; Gui, Jing; Zhang, Jiatao; Ouyang, Min; Zhu, Hesun

doi:10.1002/adma.201304652

Cited by 149 publications

(157 citation statements)

References 35 publications

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“…A variety of nanostructures, such as core-shell nanoparticles [5,6], heterodimers [7,8], metal-tipped nanorods [9,10], and metal island-decorated nanosheets [11], have been identified as excellent candidates for a wide range of applications. In particular, these materials are useful for photoelectric devices [12][13][14], photocatalysis [15][16][17], electrocatalysis [18][19][20], and theranostic [21] treatments.…”

Section: Introductionmentioning

confidence: 99%

Pd-dispersed CuS hetero-nanoplates for selective hydrogenation of phenylacetylene

et al. 2016

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We have exploited a new and distinctive combination method that "disperses" elemental Pd into CuS nanoplates. Pd was successfully dispersed by means of the concomitant transformation of CuS into an amorphous sulfide, which formed an intimate metal-sulfide contact via cation exchange and underwent a subsequent reduction. A series of such Pd-dispersed CuS hetero-nanoplates were synthesized with tailored proportions and compositions. By efficient utilization of noble metal atoms and stable anchored active sites, the optimal catalytic performance for the semihydrogenation of phenylacetylene, a probe reaction, was achieved with high selectivity, activity, and stability. We believe that the synthetic strategy described in our study is a feasible means of developing effective metal-sulfide catalysts for organic reactions.

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Section: Introductionmentioning

confidence: 99%

Pd-dispersed CuS hetero-nanoplates for selective hydrogenation of phenylacetylene

et al. 2016

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“…For example, unique structural chirality can exist in a higher-order nc-HN because of its broken symmetry that is unattainable in its symmetric core-shell counterpart. Indeed, recent work has demonstrated the significance of controlling structural symmetry (from centrosymmetric to non-centrosymmetric configurations) of a simple two-component hybrid structure to its optical response as well as performance in water-splitting process 8 . However, controlled synthesis of the nc-HNs has not yet been fully explored that has led to limited applications.…”

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confidence: 99%

Hierarchical synthesis of non-centrosymmetric hybrid nanostructures and enabled plasmon-driven photocatalysis

et al. 2014

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Non-centrosymmetric nanostructures consisting of multiple functional subunits represents an emerging class of hybrid nanostructures that can possess dramatic difference in property and functionality from concentric core-shell configuration. Here we develop a general synthetic method to achieve hierarchical control of high-order non-centrosymmetric hybrid nanostructures. The key is to employ a common intermedium for sequential conversion to all distinct predesigned subunits under similar growth condition, thus facilitating manifold control of a hybrid nanostructure. This advancement leads to an optimally designed plasmonmediated photocatalytic nanostructure with 14.8-fold enhancement of photocatalytic efficiency as compared with conventional photocatalysts. Mechanistic study involving theoretical modelling and ultrafast time-resolved optical measurement uncovers a hot plasmonic electron-driven photocatalysis mechanism with an identified electron transfer pathway. This study may represent an important step towards high-level control of artificial nanostructures with new horizons for fundamental and technological applications.

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“…Furthermore, plasmonic Au as co-catalyst and sensitizer has been coupled with semiconductors to improve their H 2 -evolution activity [69, [106][107][108][109]. Recently, an asymmetric Au-CdS plasmonic photocatalyst exhibited a much higher activity under visible light irradiation than the samples with a symmetrical core-shell structure due to improved localized surface plasmon resonance (LSPR) effects through controlling the fine structural configuration [106]. The results highlighted that the load of plasmonic metals in semiconductors played a critical role in achieving extremely strong local electric near fields.…”

Section: Fundamentals In Photocatalytic Water Splittingmentioning

confidence: 99%

Water Splitting By Photocatalytic Reduction

2015

Green Chemistry and Sustainable Technology

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Water splitting by photocatalytic reduction is considered to be one of the most promising solutions to solve both the worldwide energy shortage and environmental pollution problems. Metal sulfide semiconductor photocatalysts as an important kind of photocatalysts have gained extensive interest in the field of photocatalytic H 2 evolution due to their superior photocatalytic activity under visible light irradiation. This chapter summarizes the integration and optimization of highly efficient metal sulfide-based semiconductors from a system engineering perspective. To achieve the optimum efficiency, several typical system integration strategies such as loading co-catalysts onto nanoscale metal sulfides, forming doped or nanosized solid solutions, developing core/shell and intercalated semiconductors, fabricating hybrid or multijunction photocatalysts, and exploring new mechanisms beyond heterojunctions are outlined and discussed in detail. Further research should focus on the investigation of mechanism, the development of highly efficient co-catalysts and semiconductors, as well as the construction of multi-junction photocatalysts with high H 2 -evolution activity. In this chapter, we not only provide a summary of system integration strategies of metal sulfides for solar water splitting but also may provide some potential opportunities for designing other types of heterogeneous photocatalysts used in solar water splitting.

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Controlling Structural Symmetry of a Hybrid Nanostructure and its Effect on Efficient Photocatalytic Hydrogen Evolution

Cited by 149 publications

References 35 publications

Pd-dispersed CuS hetero-nanoplates for selective hydrogenation of phenylacetylene

Pd-dispersed CuS hetero-nanoplates for selective hydrogenation of phenylacetylene

Hierarchical synthesis of non-centrosymmetric hybrid nanostructures and enabled plasmon-driven photocatalysis

Water Splitting By Photocatalytic Reduction

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