Journal ArticleDOI
Highly efficient photocatalysts constructed by rational assembly of dual-cocatalysts separately on different facets of BiVO4
Reads0
Chats0
TLDR
In this article, two types of photocatalysts (M/MnOx/BiVO4 and M/Co3O4/BVO4) with reduction and oxidation cocatalyst were successfully prepared on the different facets of BiVO4 by photo-deposition method.Abstract:
Cocatalysts play important roles in promoting the catalytic reactions of semiconductor photocatalysts. Especially, deposition of dual cocatalysts, i.e., oxidation and reduction cocatalysts, onto a semiconductor photocatalyst can significantly improve its photocatalytic activity due to the synergetic effect of rapid consumption of photogenerated electrons and holes. However, in most cases, the cocatalysts are randomly deposited onto the semiconductor photocatalysts, where the cocatalysts cannot function fully. Herein, based on the findings that photogenerated electrons and holes can be spatially separated onto the different facets of BiVO4, we have successfully prepared two types of photocatalysts (M/MnOx/BiVO4 and M/Co3O4/BiVO4, where M stands for noble metals) with reduction and oxidation cocatalysts selectively deposited onto the {010} and {110} facets of BiVO4 by a photo-deposition method. Remarkably enhanced photocatalytic activities were observed for such assembled photocatalysts in control experiments of photocatalytic water oxidation and photocatalytic degradation of methyl orange and rhodamine B. In-depth investigations show that the enhanced photocatalytic performances are due to not only the intrinsic nature of charge separation between the {010} and {110} facets of BiVO4, but also the synergetic effect of dual-cocatalysts deposited onto the different facets of BiVO4. This work further proves the feasibility of the general concepts for approaching efficient artificial photosynthesis systems, namely, engineering of crystal-based photocatalysts by selective deposition of suitable reduction and oxidation cocatalysts onto the different facets of light absorbing semiconductor crystals.read more
Citations
More filters
Journal ArticleDOI
Graphitic Carbon Nitride (g-C3N4)-Based Photocatalysts for Artificial Photosynthesis and Environmental Remediation: Are We a Step Closer To Achieving Sustainability?
TL;DR: It is anticipated that this review can stimulate a new research doorway to facilitate the next generation of g-C3N4-based photocatalysts with ameliorated performances by harnessing the outstanding structural, electronic, and optical properties for the development of a sustainable future without environmental detriment.
Journal ArticleDOI
Semiconductor heterojunction photocatalysts: design, construction, and photocatalytic performances
Huanli Wang,Lisha Zhang,Zhigang Chen,Junqing Hu,Shijie Li,Zhaohui Wang,Jianshe Liu,Xinchen Wang +7 more
TL;DR: This review attempts to summarize the recent progress in the rational design and fabrication ofheterojunction photocatalysts, such as the semiconductor-semiconductor heterojunction, the semiconductors-metal heterojunctions, the silicon-carbon heteroj junction and the multicomponent heteroj conjunction.
Journal ArticleDOI
Particulate Photocatalysts for Light-Driven Water Splitting: Mechanisms, Challenges, and Design Strategies
TL;DR: This review illustrates that it is possible to employ the fundamental principles underlying photosynthesis and the tools of chemical and materials science to design and prepare photocatalysts for overall water splitting.
Journal ArticleDOI
Methods, Mechanism, and Applications of Photodeposition in Photocatalysis: A Review.
Kasper Wenderich,Guido Mul +1 more
TL;DR: For a variety of metals and semiconductors, an attempt is made to generalize observations in the literature on the effect of process conditions applied during photodeposition on (i) particle size distributions, (ii) oxidation states of the metals obtained, and (iii) consequences for photocatalytic activities.
Journal ArticleDOI
Defect engineering in photocatalytic materials
TL;DR: In this paper, the state-of-the-art progress on defect-engineered photocatalytic materials is reviewed and the future opportunities and challenges regarding defect engineering in photocatalysis are highlighted.
References
More filters
Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
Journal ArticleDOI
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
Semiconductor-based Photocatalytic Hydrogen Generation
TL;DR: Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting and its Applications d0 Metal Oxide Photocatalysts 6518 4.4.1.
Journal ArticleDOI
A review and recent developments in photocatalytic water-splitting using TiO2 for hydrogen production
TL;DR: In this article, the up-to-date development of the above-mentioned technologies applied to TiO 2 photocatalytic hydrogen production is reviewed, based on the studies reported in the literature, metal ion-implantation and dye sensitization are very effective methods to extend the activating spectrum to the visible range.
Journal ArticleDOI
TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations A review
TL;DR: In this article, the photocatalytic degradation of azo dyes containing different functionalities has been reviewed using TiO2 as photocatalyst in aqueous solution under solar and UV irradiation.
Related Papers (5)
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more