Site- and Spatial-Selective Integration of Non-noble Metal Ions into Quantum Dots for Robust Hydrogen Photogeneration

Gao, Yu-Ji; Li, Xu‐Bing; Wang, Xu‐Zhe; Zhao, Ningjiu; Zhao, Yufei; Wang, Yang; Xin, Zhi-Kun; Zhang, Jianping; Zhang, Tierui; Tung, Chen‐Ho; Wu, Li‐Zhu

doi:10.1016/j.matt.2020.06.022

Cited by 47 publications

(22 citation statements)

References 78 publications

(79 reference statements)

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“…Solar energy has exhibited great potential as a promising alternative to substituting the traditional energy sources because it is clean, renewable, abundant, affordable, and everlasting. , Due to the unpredictable nature of weather, it is challenging to make use of solar light under poor weather conditions and/or at night; therefore, it is necessary to transform solar energy into new forms of energy that are storage-stable. Up to date, solar energy has been extensively utilized to produce storable and transportable fuels with high energy capacity as well as value-added chemicals. − Among various solar energy conversion techniques, photocatalysis is deemed as a promising, environmentally benign, and cost-effective strategy to generate both fuels and high-value chemicals. − During the past decades, numerous studies have been focused on several well-known reactions (e.g., H 2 production, − N 2 fixation − and CO 2 conversion − ) achieved via photocatalysis. Recently, a range of emerging photocatalytic reactions generating fuels and/or valuable chemicals has been attracting increasing attention. − These emerging reactions can be categorized into three different types, i.e., reduction reactions, oxidation reactions, and redox reactions, based on their specific photocatalytic reaction mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Single-Atom Photocatalysts for Emerging Reactions

et al. 2021

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Single-atom photocatalysts have demonstrated an enormous potential in producing value-added chemicals and/or fuels using sustainable and clean solar light to replace fossil fuels causing global energy and environmental issues. These photocatalysts not only exhibit outstanding activities, selectivity, and stabilities due to their distinct electronic structures and unsaturated coordination centers but also tremendously reduce the consumption of catalytic metals owing to the atomic dispersion of catalytic species. Besides, the single-atom active sites facilitate the elucidation of reaction mechanisms and understanding of the structure-performance relationships. Presently, apart from the well-known reactions (H2 production, N2 fixation, and CO2 conversion), various novel reactions are successfully catalyzed by single-atom photocatalysts possessing high efficiency, selectivity, and stability. In this contribution, we summarize and discuss the design and fabrication of single-atom photocatalysts for three different kinds of emerging reactions (i.e., reduction reactions, oxidation reactions, as well as redox reactions) to generate desirable chemicals and/or fuels. The relationships between the composition/structure of single-atom photocatalysts and their activity/selectivity/stability are explained in detail. Additionally, the insightful reaction mechanisms of single-atom photocatalysts are also introduced. Finally, we propose the possible opportunities in this area for the design and fabrication of brand-new high-performance single-atom photocatalysts.

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Section: Introductionmentioning

confidence: 99%

Single-Atom Photocatalysts for Emerging Reactions

et al. 2021

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“…At present, photocatalytic H 2 evolution (PHE) process is generally limited by the narrow solar adsorption range, inefficient separation efficiency of charge carriers, and sluggish H 2 evolution reaction kinetics. [ 8–12 ] Thereby, ingenious design and construction of photocatalysts with suitable band gap, high conductivity, and vigorous kinetics is highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Ni₁₋_xCo_xSe₂C/ZnIn₂S₄ Hybrid Nanocages with Strong 2D/2D Hetero‐Interface Interaction Enable Efficient H₂‐Releasing Photocatalysis

Chao

Zhou

Lai

et al. 2021

Adv Funct Materials

117

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Designing a semiconductor‐based heterostructure photocatalyst for achieving the efficient separation of photogenerated electron‐hole pairs is highly important for enhancing H2 releasing photocatalysis. Here, a new class of Ni1−xCoxSe2–C/ZnIn2S4 hierarchical nanocages with abundant and compact ZnIn2S4 nanosheets/Ni1−xCoxSe2C nanosheets 2D/2D hetero–interfaces, is designed and synthesized. The constructed heterostructure photocatalyst exposes rich hetero‐junctions, supplying the broad and short transfer paths for charge carriers. The close contacts of these two kinds of nanosheets induce a strong interaction between ZnIn2S4 and Ni1−xCoxSe2C, improving the separation and transfer of photo‐generated electron‐hole pairs. As a consequence, the distinctive Ni1−xCoxSe2C/ZnIn2S4 hierarchical nanocages without using additional noble‐metal cocatalysts, display remarkable H2‐relaesing photocatalytic activity with a rate of 5.10 mmol g−1 h−1 under visible light irradiation, which is 6.2 and 30 times higher than those of fresh ZnIn2S4 nanosheets and bare Ni1−xCoxSe2C nanocages, respectively. Spectroscopic characterizations and theory calculations reveal that the strong interaction between ZnIn2S4 and Ni1−xCoxSe2C 2D/2D hetero‐interfaces can powerfully promote the separation of photo‐generated charge carriers and the electrons transfer from ZnIn2S4 to Ni1−xCoxSe2C.

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“…Photocatalytic water splitting converts abundant sunlight into storable/carbon‐free H 2 . [ 1–43 ] Thus, it has attracted significant research attention. Of particular importance is the rational design of highly‐efficient, stable and inexpensive photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Significantly Raised Visible‐Light Photocatalytic H₂ Evolution on a 2D/2D ReS₂/In₂ZnS₄ van der Waals Heterostructure

Ran

Zhang

et al. 2021

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Owing to dwindling fossil fuels reserves, the development of alternative renewable energy sources is globally important. Photocatalytic hydrogen (H2) evolution represents a practical and affordable alternative to convert sunlight into carbon‐free H2 fuel. Recently, 2D/2D van der Waals heterostructures (vdWHs) have attracted significant research attention for photocatalysis. Here, for the first time a ReS2/In2ZnS4 2D/2D vdWH synthesized via a facile physical mixing is reported. It exhibits a highly promoted photocatalytic H2‐evolution rate of 2515 µmol h−1 g−1. Importantly, this exceeds that for pristine In2ZnS4 by about 22.66 times. This, therefore, makes ReS2/In2ZnS4 one of the most efficient In2ZnS4‐based photocatalysts without noble‐metal cocatalysts. Advanced characterizations and theoretical computations results show that interlayer electronic interaction within ReS2/In2ZnS4 vdWH and atomic‐level S active centers along the edges of ReS2 NSs work collaboratively to result in the boosted light‐induced H2 evolution. Results will be of immediate benefit in the rational design and preparation of vdWHs for applications in catalysis/(opto)electronics.

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Site- and Spatial-Selective Integration of Non-noble Metal Ions into Quantum Dots for Robust Hydrogen Photogeneration

Cited by 47 publications

References 78 publications

Single-Atom Photocatalysts for Emerging Reactions

Single-Atom Photocatalysts for Emerging Reactions

Ni₁₋_xCo_xSe₂C/ZnIn₂S₄ Hybrid Nanocages with Strong 2D/2D Hetero‐Interface Interaction Enable Efficient H₂‐Releasing Photocatalysis

Significantly Raised Visible‐Light Photocatalytic H₂ Evolution on a 2D/2D ReS₂/In₂ZnS₄ van der Waals Heterostructure

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Site- and Spatial-Selective Integration of Non-noble Metal Ions into Quantum Dots for Robust Hydrogen Photogeneration

Cited by 47 publications

References 78 publications

Single-Atom Photocatalysts for Emerging Reactions

Single-Atom Photocatalysts for Emerging Reactions

Ni1−xCoxSe2C/ZnIn2S4 Hybrid Nanocages with Strong 2D/2D Hetero‐Interface Interaction Enable Efficient H2‐Releasing Photocatalysis

Significantly Raised Visible‐Light Photocatalytic H2 Evolution on a 2D/2D ReS2/In2ZnS4 van der Waals Heterostructure

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Ni₁₋_xCo_xSe₂C/ZnIn₂S₄ Hybrid Nanocages with Strong 2D/2D Hetero‐Interface Interaction Enable Efficient H₂‐Releasing Photocatalysis

Significantly Raised Visible‐Light Photocatalytic H₂ Evolution on a 2D/2D ReS₂/In₂ZnS₄ van der Waals Heterostructure