Journal ArticleDOI
Cu-Doped ZnS Hollow Particle with High Activity for Hydrogen Generation from Alkaline Sulfide Solution under Visible Light
Takeo Arai,Shin Ichiro Senda,Yoshinori Sato,Hideyuki Takahashi,Kozo Shinoda,Balachandran Jeyadevan,Kazuyuki Tohji +6 more
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TLDR
In this paper, a visible light sensitive and highly active Cu-doped ZnS hollow photocatalyst particles "Cu-ZnS-shell" were successfully developed.Abstract:
Visible light sensitive and highly active Cu-doped ZnS hollow photocatalyst particles “Cu-ZnS-shell” were successfully developed. These particles could generate H2 through photocatalytic decomposition of HS− ion in Na2S solution. The photoactivity under xenon lamp irradiation was 6 and 130 times higher than that of copper-free “ZnS-shell” and coprecipitated ZnS particles, respectively. “Cu-ZnS-shell” particles were prepared by doping the “ZnS-shell” particles synthesized using zinc oxide as precursor with Cu, utilizing the difference in ionization tendency between zinc and copper. Though the photoactivity of “ZnS-shell” was higher than that of coprecipitated ZnS, their photoactivity under visible light conditions was low. However, the “Cu-ZnS-shell” was active to light of wavelengths higher than 440 nm and is preferred over CdS, which requires an expensive support metal catalyst such as platinum to decompose HS− ion.read more
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Heterogeneous photocatalyst materials for water splitting
Akihiko Kudo,Yugo Miseki +1 more
TL;DR: This critical review shows the basis of photocatalytic water splitting and experimental points, and surveys heterogeneous photocatalyst materials for water splitting into H2 and O2, and H2 or O2 evolution from an aqueous solution containing a sacrificial reagent.
Journal ArticleDOI
Visible Light Photocatalytic H2-Production Activity of CuS/ZnS Porous Nanosheets Based on Photoinduced Interfacial Charge Transfer
TL;DR: A novel visible-light-driven photocatalyst was designed based on photoinduced interfacial charge transfer (IFCT) through surface modification of ZnS porous nanosheets by CuS and for the first time exhibits a facile method for enhancing H(2)-production activity by photoinduced IFCT.
Journal ArticleDOI
Recent advances in metal sulfides: from controlled fabrication to electrocatalytic, photocatalytic and photoelectrochemical water splitting and beyond
Sundaram Chandrasekaran,Lei Yao,Libo Deng,Christopher R. Bowen,Yan Zhang,Sanming Chen,Zhiqun Lin,Feng Peng,Peixin Zhang +8 more
TL;DR: A variety of strategies such as structural tuning, composition control, doping, hybrid structures, heterostructures, defect control, temperature effects and porosity effects on metal sulfide nanocrystals are discussed and how they are exploited to enhance performance and develop future energy materials.
Journal ArticleDOI
Compound Copper Chalcogenide Nanocrystals
TL;DR: This review captures the synthesis, assembly, properties, and applications of copper chalcogenide NCs, which have achieved significant research interest in the last decade due to their compositional and structural versatility.
Journal ArticleDOI
Hollow Cobalt-Based Bimetallic Sulfide Polyhedra for Efficient All-pH-Value Electrochemical and Photocatalytic Hydrogen Evolution.
Zhen-Feng Huang,Jiajia Song,Ke Li,Muhammad Tahir,Yutong Wang,Lun Pan,Li Wang,Xiangwen Zhang,Ji-Jun Zou +8 more
TL;DR: The strategy developed here, i.e., homogeneous doping and self-templated hollow structure, provides a way to synthesize transition metal sulfides for catalysis and energy conversion.
References
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Journal ArticleDOI
Photochemical hydrogen production with cadmium sulfide suspensions
TL;DR: In this article, photoetching of CdS microcrystals has been used to improve the efficiency of photochemical hydrogen production by irradiating suspensions of platinized cdS in various electrolyte solutions.
Journal ArticleDOI
Photochemical production of hydrogen with zinc sulfide suspensions
TL;DR: In this article, the authors investigated the properties of active ZnS photocatalysts, the reaction parameters, and the formation of the reaction products, and they found that the reaction rate was strongly dependent on the amount of zinc.
Journal ArticleDOI
Photocatalytic H2 evolution under visible light irradiation on Ni-doped ZnS photocatalyst
Akihiko Kudo,Masahiko Sekizawa +1 more
TL;DR: In this paper, aqueous solution containing K2SO3 and Na2S was used as reducing reagents under visible light irradiation without co-catalysts such as Pt.Zn0.999Ni0.001S photocatalysts.
Journal ArticleDOI
Photocatalytic H2 evolution under visible light irradiation on Zn1-xCuxS solid solution
Akihiko Kudo,Masahiko Sekizawa +1 more
TL;DR: In this article, the H2 evolution reaction from an aqueous Na2SO3 solution proceeded with 3.7% quantum yield under visible light irradiation (λ > 420 nm) on a Zn0.957Cu0.043S solid solution photocatalyst without co-catalysts such as Pt.
Journal ArticleDOI
H2 evolution from aqueous sulfite solutions under visible-light irradiation over Pb and halogen-codoped ZnS photocatalysts
Issei Tsuji,Akihiko Kudo +1 more
TL;DR: Pb-doped ZnS showed a photocatalytic activity for H 2 evolution from an aqueous K 2 SO 3 solution under visible-light irradiation (λ > 420nm) even without a Pt cocatalyst as mentioned in this paper.
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