Ni-doped ZnS decorated graphene composites with enhanced photocatalytic hydrogen-production performance

Chang, Chi‐Jung; Chu, Kuan-Wu; Hsu, Mu-Hsiang; Chen, Chin-Yi

doi:10.1016/j.ijhydene.2015.05.141

Cited by 75 publications

(28 citation statements)

References 43 publications

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“…Ni doping can enhance the photocatalytic activity of H 2 generation by increasing the absorption of light of the doped photocatalyst. In contrast, when the amount of Ni loaded on ZnS-graphene composites is increased, it will degenerate the crystalline property of the photocatalyst [91]. In addition, the incorporation of Ni on Cd 1−x Zn x S microsphere photocatalyst increases the rate of hydrogen production to 191 µmol h −1 g −1 when an optimum amount of 0.1 wt % Ni is loaded.…”

Section: Transition Metal Dopingmentioning

confidence: 99%

Recent Progress on Metal Sulfide Composite Nanomaterials for Photocatalytic Hydrogen Production

Lee

Chang

2019

Catalysts

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Metal sulfide-based photocatalysts have gained much attention due to their outstanding photocatalytic properties. This review paper discusses recent developments on metal sulfide-based nanomaterials for H2 production, acting as either photocatalysts or cocatalysts, especially in the last decade. Recent progress on key experimental parameters, in-situ characterization methods, and the performance of the metal sulfide photocatalysts are systematically discussed, including the forms of heterogeneous composite photocatalysts, immobilized photocatalysts, and magnetically separable photocatalysts. Some methods have been studied to solve the problem of rapid recombination of photoinduced carriers. The electronic density of photocatalysts can be investigated by in-situ C K-edge near edge X-ray absorption fine structure (NEXAFS) spectra to study the mechanism of the photocatalytic process. The effects of crystal properties, nanostructure, cocatalyst, sacrificial agent, electrically conductive materials, doping, calcination, crystal size, and pH on the performance of composite photocatalysts are presented. Moreover, the facet effect and light trapping (or light harvesting) effect, which can improve the photocatalytic activity, are also discussed.

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Section: Transition Metal Dopingmentioning

confidence: 99%

Recent Progress on Metal Sulfide Composite Nanomaterials for Photocatalytic Hydrogen Production

Lee

Chang

2019

Catalysts

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“…It contributes for the suppression of the charge-carrier recombination and increases the visible photon absorption rate [84]. Graphene, the honeycomb atomic scale lattice of carbon, having properties like high specific surface area and high electrical conductivity is also an alternative active carbon compound to increase the photocatalytic activity of semiconductor photocatalysts [85]. This specific compound in combination with metal oxides has been widely applied in photocatalytic CO 2 reduction, water split reaction, and organic degradation [86][87][88][89][90][91].…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

et al. 2018

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The nanostructured materials offer various advantages as they provide more flexible space for ease reconstruction, as their nanosize expands the limits and results in confinement effect, enhanced mechanical stability, and large surface area, and make them suitable for photocatalytic activities. The advancement in synthesis techniques provides the freedom to alter its physical properties as per the demand. This article provides a 360° view point on the nanomaterials which are used for solar energy harnessing with respect to environmental and energy application. The discussion emphasizes on various synthesis methods of nanostructured materials, their mechanistic features, usage in demanding applications such as photosplitting of water for hydrogen production, artificial photosynthesis, and water and wastewater treatment with an endnote highlighting the future scope of nanomaterials for real-world applications.

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“…Thus far, the combination of graphene derivatives and promising semiconducting photocatalyst via facile techniques was reported, including metal oxides [67][68][69][70], nitrides [71,72], oxynitrides [26,73], sulfides, and oxysulfides [74][75][76][77], as well as ternary composites [78] and those based on abundant Earth materials [79][80][81]. To realize the effectiveness of such hybridization, a recent study by Tang and coworkers [82] can be discussed.…”

Section: Graphene As Electron Acceptormentioning

confidence: 99%

Role of Graphene in Photocatalytic Solar Fuel Generation

Adeli¹,

Taghipour²

2018

Visible-Light Photocatalysis of Carbon-Based Materials

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One of the most promising methods for conversion and storage of solar energy is in the form of the chemical bonds of an energy carrier, such as hydrogen or light hydrocarbons. However, the traditional methods to harness and store solar energy are simply too expensive to be implemented on a large scale. It has been documented that the recombination of photo-induced charge carriers is the greatest source of inefficiency in photocatalytic systems. In the last decade, graphene derivatives and their functionalized nanostructures were extensively utilized for various roles to improve the efficiency of photocatalytic solar fuel generation. These include photocatalyst/redox active sites via band gap and defect density engineering, charge acceptor due to their excellent carrier mobility, a solid-state charge mediator by electronic band alignment, and light absorber by taking advantage of their photoluminescence characteristics at the nanoscale. This chapter aims to provide an authoritative and in-depth review on the properties and application of graphene derivatives, as well as the recent advances in the design of graphene-based photocatalytic systems. The knowledge extracted from the presented materials can be applied to other applications dealing with surface chemistry, interfacial science, and optoelectronic device fabrication.

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Ni-doped ZnS decorated graphene composites with enhanced photocatalytic hydrogen-production performance

Cited by 75 publications

References 43 publications

Recent Progress on Metal Sulfide Composite Nanomaterials for Photocatalytic Hydrogen Production

Recent Progress on Metal Sulfide Composite Nanomaterials for Photocatalytic Hydrogen Production

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

Role of Graphene in Photocatalytic Solar Fuel Generation

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