In situ loading CuO quantum dots on TiO2 nanosheets as cocatalyst for improved photocatalytic water splitting

Wang, Yanlin; Zhou, Meng; He, Youxing; Zhou, Zirong; Sun, Zheng

doi:10.1016/j.jallcom.2019.152184

Cited by 70 publications

(9 citation statements)

References 54 publications

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“…Layered NS-based materials have attracted more and more attention as photocatalysts for water splitting. [277][278][279][280][281][282] Nevertheless, the separation and transfer of photoexcited charge carriers inside the layered NSs during the photocatalysis process are limited due to the weak van der Waals interactions in layered NSs. [283][284][285] Thus, an intercalation strategy of introducing highvalence Ru 4+ SAs into GaS NSs was reported to facilitate the carrier separation in visible-light-driven water splitting.…”

Section: Band Gap/structure Engineeringmentioning

confidence: 99%

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Liu

Ran

et al. 2022

J. Mater. Chem. A

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Section: Band Gap/structure Engineeringmentioning

confidence: 99%

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Liu

Ran

et al. 2022

J. Mater. Chem. A

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“…[17,[271][272][273] Among different metal oxides based photocatalysts, TiO 2 is the mostly investigated photocatalyst in photocatalysis due to its suitable redox potentials. [274] For example, Wang et al [275] fabricated CuO QDs/TiO 2 composite via in situ hydrothermal method and employed in photocatalysis for water reduction to evolve H 2 . In a typical reaction mechanism, the photoinduced electrons of TiO 2 were transferred to the conduction band of CuO for reduction of water to produce H 2 .…”

Section: Metal Oxides Based Compositesmentioning

confidence: 99%

Recent Progress in the Synthesis and Applications of Composite Photocatalysts: A Critical Review

2021

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concentration for March 2021 was 417.14 parts per million (ppm), which is about 50% higher than the average for pre-industrial levels (i.e., 278 ppm). In order to control global warming, the CO 2 emission must fall by 25% to keep the temperature below 2 °C threshold relative to the pre-industrial climate. [3,4] Among the existing numerous renewable and sustainable energy resources such as wind, solar, hydropower, geo-thermal and ocean-energy, the consumption of unlimited solar energy become a vital alternative energy source, and has been extensively explored during the past few decades. [5] For instant, solar energy could be employed practically in photocatalysis for water splitting to generate hydrogen, carbon dioxide conversion to value added products, and pollutant oxidation. [6][7][8] Photocatalysis has advantage over conventional biological, incineration, electrocatalytic, adsorption, and air stripping treatment techniques because these methods always exhibit shortfalls such as instability, catalyst poisoning, low production yield, poor mechanical strength, time consuming, and electrode corrosion. [9,10] Generally, the photocatalytic process involves several essential steps such as the light absorption by photocatalyst to generate charge carriers, charge carrier's separation and migration to the photocatalyst surface, and the surface redox reactions to transform solar energy into chemical energy. [11,12] If these essential steps are satisfied by a proficient photocatalyst, then of course, high photocatalytic efficiency could be expected. Generally, the fundamental features of a photocatalyst include appropriate band gaps with their corresponding valence and conduction band potentials, surface active sites, surface area, and optical absorption behavior that govern the efficiency and effectiveness of photocatalytic processes. [13,14] Since the photocatalytic reactions are typically performed in water and air environments, therefore, the photocatalyst stability could be crucial under these circumstances. [15] Fujishima and Honda performed water splitting reaction for the first time in 1972, while utilizing TiO 2 photoanode with the aid of Pt as a counter electrode. [16] Afterward, TiO 2 photocatalyst received marvelous attention in photocatalysis owing to its promising features such as its non-toxic nature, water insolubility, nature abundant, hydrophilicity, high stability, and appropriate valence and conduction band potentials for redox reactions. [17] Yet, the Photocatalysis is an advanced technique that transforms solar energy into sustainable fuels and oxidizes pollutants via the aid of semiconductor photo catalysts. The main scientific and technological challenges for effective photocatalysis are the stability, robustness, and efficiency of semiconductor photocatalysts. For practical applications, researchers are trying to develop highly efficient and stable photocatalysts. Since the literature is highly scattered, it is urgent to write a critical review that summarizes the stateof theart progress in the ...

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“…However, costly noble metal cocatalysts and complex preparation process of carbon materials severely limit their extensive application. Recent years, the transition metal Ni‐based, Cu‐based, and Co‐based cocatalysts have received considerable attention in photocatalytic field, attributing to their low‐cost, abundant resource, stability, and catalytic activity 31‐40 . Especially, Ni‐based cocatalysts have took on a very attractive prospect, because of their structural stability, facile preparation, and high performance in hydrogen evolution reaction (HER).…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, many semiconductors or metals have been developed as multi‐function cocatalysts, including noble metals of Pt, Au, Rh, and Ag, 28‐30 transition metals of Ni, Co, and Cu, 31,32 transition metal hydroxides of Ni(OH) 2 , Cu(OH) 2 , and Co(OH) 2 , 33‐36 transition metal oxidation of NiO, CuO, and Co 3 O 4 , 37‐40 carbon materials involved carbon nanotubes, carbon quantum dots (QDs), and reduced graphene oxide (RGO), and so on 41‐44 . However, costly noble metal cocatalysts and complex preparation process of carbon materials severely limit their extensive application.…”

Section: Introductionmentioning

confidence: 99%

Recent progresses in photocatalytic hydrogen production: design and construction of Ni‐based cocatalysts

Liu

Zhuang

2020

Int J Energy Res

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Summary Up to now, much effort has focused on developing the highly efficiency composite photocatalysts by introducing cocatalysts in the photocatalytic hydrogen production reaction, because the proper cocatalysts can reduce activation energy, provide active sites, and suppress the reverse reaction. The transition metal nickel and its compounds acting as cocatalyst have received intensive attention because of their structural stability, facile preparation, and high performance in hydrogen evolution reaction, and are expected to replace the function of noble metals. This review emphasizes on the latest progresses that design and construction of composite photocatalyst using Ni‐based cocatalyst for enhanced hydrogen production, such as metal nickel, nickel sulfide, and nickel phosphide, will be presented. Then, some preparation strategies and influence factors of Ni‐based cocatalysts on enhanced photocatalytic hydrogen production are elucidated in detail. Finally, some challenge and perspective on the highly active cocatalysts in the area of photocatalytic hydrogen production from water splitting are also given.

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In situ loading CuO quantum dots on TiO2 nanosheets as cocatalyst for improved photocatalytic water splitting

Cited by 70 publications

References 54 publications

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Recent Progress in the Synthesis and Applications of Composite Photocatalysts: A Critical Review

Recent progresses in photocatalytic hydrogen production: design and construction of Ni‐based cocatalysts

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