BaWO4/g-C3N4 heterostructure with excellent bifunctional photocatalytic performance

Wang, Cheng; Fu, Min; Cao, Jun; Wu, Xiaolu; Hu, Xueli; Dong, Fan

doi:10.1016/j.cej.2019.123833

Cited by 66 publications

(26 citation statements)

References 49 publications

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“…[173,184,195] Studies have shown that the construction of a suitable heterostructure can effectively improve the separation efficiency of photogenerated electron-hole pairs and enhance photocatalytic activity. [10,12,196] Pan et al designed and synthesized B-TiO 2 /PCN heterojunction, which could effectively promote the transfer of photogenic electrons from PCN to B-TiO 2 , thus enhancing the photocatalytic performance of PCN toward HER. [197] Ran et al prepared a phosphorene/PCN heterostructure, and found that phosphorene as a narrow-band co-catalyst could effectively enhance the light absorption range of PCN and further enhance the photocatalytic performance of PCN.…”

Section: Photocatalytic Hydrogen Evolutionmentioning

confidence: 99%

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Zhang

et al. 2021

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Photocatalysis is a promising energy conversion and environmental restoration technology. The main focus of photocatalysis is the development and manufacture of highly efficient photocatalysts. Semiconductor‐based photocatalysis technology based on harnessing solar energy is considered as an attractive approach to solve the problems of global energy shortage and environmental pollution. Since 2009 pioneering work has been carried out on polymeric carbon nitride (PCN) for visible photocatalytic water splitting, thus PCN‐based photocatalysis has become a hot research topic, demanding significant research attention. This article reviews the physical and chemical properties, synthesis methods, and the methods to control the morphology, heteroatom doping, and construction of heterojunctions to improve the performance of PCN‐based photocatalysts in water splitting and nitrogen fixation. Through different design strategies, the photo‐generated electron‐hole pair separation efficiency of PCN materials can be effectively improved, thereby improving their photocatalytic performance. Finally, the challenges of PCN‐based photocatalysts in water splitting and nitrogen fixation applications are discussed herein. It is strongly believed that through different design strategies, efficient PCN‐based photocatalysts can be constructed for both water splitting and nitrogen reduction. These excellent modification strategies can be used as a guiding theory for photocatalytic reactions of other promising catalysts and further promote the development of photocatalysis.

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Section: Photocatalytic Hydrogen Evolutionmentioning

confidence: 99%

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Zhang

et al. 2021

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“…Generally, the generation of •O 2 − and •OH active species has close relation with the CB edge (i.e., E CB ) and VB edge (i.e., E VB ) of semiconductor. As previously proposed, the E CB and E VB values of a special semiconductor can be achieved with the aid of following functions: [50,51] www.advmatinterfaces.de herein, these parameters including X and E e are the absolute electronegativity of semiconductor and the energy of free electrons on the hydrogen scale with a fixed values of 4.5 eV, respectively. As for BiOF, the values of X and E g are 7.…”

Section: Wwwadvmatinterfacesdementioning

confidence: 99%

Facile Realization of Boosted Near‐Infrared‐Visible Light Driven Photocatalytic Activities of BiOF Nanoparticles through Simultaneously Exploiting Doping and Upconversion Strategy

Ran

Wang

et al. 2021

Adv Materials Inter

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In spite of this, one of the unavoidable issues of photocatalysis is how to take advantage of solar energy efficiently. As we know, the sunlight can be roughly divided into three parts, that is, ultraviolet, visible and near-infrared (NIR) light, in which they take around 5%, 45%, and 50% energy of the sunlight, respectively. [6,7] To date, these widely used photocatalysts, such as ZnO, WO 3 , and TiO 2 , suffer from narrow absorption edge, where the energy originating from visible and NIR light is wasted, resulting in dissatisfied photocatalytic properties. [8][9][10] In order to tackle this shortage, researchers tried to find out other semiconductors and some nano-sized compounds, such as CaAl 5 Fe 7 O 19 , ZnS-CdS, and SiO 2 -TiO 2 , which were promising candidates for photocatalytic and antibacterial applications, were proposed. [11][12][13][14] Thereby, searching for novel semiconductors is a facile and efficient route to develop highly efficient photocatalytic materials.Over the last decades, considerable attention has been attracted in bismuth containing semiconductors since they exhibit promising applications in photocatalysis owing to their superiorities including high stability, suitable energy band gap (i.e., E g ), and nontoxicity. [15,16] Shi et al. reported that the Bi 5 OI 7 and BiO 5 I 2 semiconductors with admirable photocatalytic activities can utilize both ultraviolet and visible lights. [17] As a member of bismuth containing semiconductors, the investigation on the photocatalytic properties of BiOX (X = F, Cl, Br, and I), which displays unique matlockite structure with [XBiOOBiX] layers, has been intensively performed. [18,19] Particularly, with the help of weak nonbonding van der Waals interaction along the c-axis, [Bi 2 O 2 ] 2+ slabs with positive valence are interleaved by means of two halide ions, leading to the production of internal electric field along the caxis. [18] Note that, the occurrence of the internal electric field enables the separation of electron-hole pairs more efficiently which gives rise to admirable photocatalytic behaviors of BiOX. At present, it has been revealed that the BiOX compounds can capture both ultraviolet and visible lights to photodegrade pollutants (i.e., RhB, methyl orange). [20,21] Nevertheless, these currently developed BiOX photocatalysts still own some deficiencies, such as the harvest of NIR light is insufficient and A facile strategy is put forward to improve the photocatalytic activity of BiOF nanoparticles by simultaneously exploiting doping and upconversion engineering. The Er 3+ /Yb 3+ -codoped BiOF nanoparticles are synthesized via using high-temperature solid-state reaction route. Through employing firstprinciples density functional theory, one knows that the electronic structure of BiOF host is greatly impacted by Er 3+ and Yb 3+ ions doping. Excited by 980 nm, bright upconversion emissions are seen in prepared compounds and their maximum intensities are obtained when x = 0.04. Furthermore, the photocatalytic capacity of the designed n...

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“…The interface formed can reduce the recombination of photoinduced charge and improve the absorptivity of visible light. Meanwhile, the high redox ability of electrons and holes is maintained [26]. Therefore, design and synthesis of different types of g-C3N4-base heterojunction photocatalyst has important research value for achieving efficient photodegradation of pollutants and improving the increasingly serious environmental pollution [27].…”

Section: Application Of G-c3n4-based Heterojunction Photocatalystmentioning

confidence: 99%

Progress in Photocatalysis of g-C₃N₄ and its Modified Compounds

Wang

2021

E3S Web Conf.

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Recently, graphitic carbon nitride (g-C3N4), a polymeric semiconductorhas been widely used as a low-cost, stable, and metal-free visible-light-active photocatalyst in the sustainable utilization of solar energy, such as water splitting, organic photosynthesis, and environmental remediation, which has attracted world wide attention from energy and environmental relative fields. Base on analysis of structure and theoretical calculation, the reasons that g-C3N4 can be used as a non-metallic catalyst were discussed in this paper. Some group's research jobs that metal-supported g-C3N4, metal-supported g-C3N4/organnic semiconductor compound and heterogeneous junction adjust the semiconductor electronic band structure have been summarized. And the mechanism, effect factors, and research developments on the reaction of organic degradation by photocatalytic and splitting water for hydrogen revolution catalyzed by above-mentioned modified g-C3N4 were emphatically analyzed. Finally, the prospects for the development of highly efficient g-C3N4 based photocatalysts are also discussed.

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BaWO4/g-C3N4 heterostructure with excellent bifunctional photocatalytic performance

Cited by 66 publications

References 49 publications

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Facile Realization of Boosted Near‐Infrared‐Visible Light Driven Photocatalytic Activities of BiOF Nanoparticles through Simultaneously Exploiting Doping and Upconversion Strategy

Progress in Photocatalysis of g-C₃N₄ and its Modified Compounds

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BaWO4/g-C3N4 heterostructure with excellent bifunctional photocatalytic performance

Cited by 66 publications

References 49 publications

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Facile Realization of Boosted Near‐Infrared‐Visible Light Driven Photocatalytic Activities of BiOF Nanoparticles through Simultaneously Exploiting Doping and Upconversion Strategy

Progress in Photocatalysis of g-C3N4 and its Modified Compounds

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Progress in Photocatalysis of g-C₃N₄ and its Modified Compounds