Heterostructured WO<sub>3</sub>@CoWO<sub>4</sub> bilayer nanosheets for enhanced visible-light photo, electro and photoelectro-chemical oxidation of water

Zhang, Huayang; Tian, Wenjie; Li, Yunguo; Sun, Hongqi; Tadé, Moses O.; Wang, Shaobin

doi:10.1039/c8ta00555a

Cited by 84 publications

(38 citation statements)

References 39 publications

(33 reference statements)

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“…In addition, a α-SnWO 4 /SnO 2 heterostructure was synthesized with CTAB as the surfactant [ 170 ] and displayed enhanced photocatalytic performance compared to that of pure α-SnWO 4 . Considering that WO 3 can be obtained by dehydration from tungstate acid, WO 3 is considered to be simultaneously produced during the synthesis of MWO 4 and is likely to form a MWO 4 /WO 3 heterojunction, such as CoWO 4 /WO 3 [ 171 , 172 ], NiWO 4 /WO 3 [ 173 , 174 ], or CuWO 4 /WO 3 [ 175 , 176 ]. Aslam et al [ 177 ] prepared a CdWO 4 /WO 3 heterojunction using a hydrothermal and chemisorption method, and reported enhanced photocatalytic activities toward the degradation of organic pollutants, compared with pure CdWO 4 and WO 3 .…”

Section: Strategies For Enhanced Photocatalytic Activitymentioning

confidence: 99%

Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

et al. 2018

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Visible-light-responsive ternary metal tungstate (MWO4) photocatalysts are being increasingly investigated for energy conversion and environmental purification applications owing to their striking features, including low cost, eco-friendliness, and high stability under acidic and oxidative conditions. However, rapid recombination of photoinduced electron–hole pairs and a narrow light response range to the solar spectrum lead to low photocatalytic activity of MWO4-based materials, thus significantly hampering their wide usage in practice. To enable their widespread practical usage, significant efforts have been devoted, by developing new concepts and innovative strategies. In this review, we aim to provide an integrated overview of the fundamentals and recent progress of MWO4-based photocatalysts. Furthermore, different strategies, including morphological control, surface modification, heteroatom doping, and heterojunction fabrication, which are employed to promote the photocatalytic activities of MWO4-based materials, are systematically summarized and discussed. Finally, existing challenges and a future perspective are also provided to shed light on the development of highly efficient MWO4-based photocatalysts.

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Section: Strategies For Enhanced Photocatalytic Activitymentioning

confidence: 99%

Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

et al. 2018

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“…On the one hand, the incorporation of In element can optimize electronic structure of catalysts, facilitating the ORR and OER activities . On the other hand, the strong synergistic effect of heterostructure between CoO and CoP also enhances the ORR and OER performance …”

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confidence: 99%

Oxygen Vacancy–Rich In‐Doped CoO/CoP Heterostructure as an Effective Air Cathode for Rechargeable Zn–Air Batteries

Jin

Chen

et al. 2019

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An efficient and low‐cost electrocatalyst for reversible oxygen electrocatalysis is crucial for improving the performance of rechargeable metal−air batteries. Herein, a novel oxygen vacancy–rich 2D porous In‐doped CoO/CoP heterostructure (In‐CoO/CoP FNS) is designed and developed by a facile free radicals–induced strategy as an effective bifunctional electrocatalyst for rechargeable Zn–air batteries. The electron spin resonance and X‐ray absorption near edge spectroscopy provide clear evidence that abundant oxygen vacancies are formed in the interface of In‐CoO/CoP FNS. Owing to abundant oxygen vacancies, porous heterostructure, and multiple components, In‐CoO/CoP FNS exhibits excellent oxygen reduction reaction activity with a positive half‐wave potential of 0.81 V and superior oxygen evolution reaction activity with a low overpotential of 365 mV at 10 mA cm−2. Moreover, a home‐made Zn–air battery with In‐CoO/CoP FNS as an air cathode delivers a large power density of 139.4 mW cm−2, a high energy density of 938 Wh kgZn−1, and can be steadily cycled over 130 h at 10 mA cm−2, demonstrating great application potential in rechargeable metal–air batteries.

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“…[ 1–3 ] However, the four‐electron transfer process as well as high activation barrier limit the reaction rate, thus the oxygen evolution reaction (OER) is considered to be the key step in the entire water splitting reaction. [ 4,5 ] Consequently, developing efficient OER electrocatalysts to reduce the overpotential and accelerate the reaction kinetics of anodic oxygen generation is essential. [ 6 ] Currently, precious metal oxides (RuO 2 and IrO 2 ) have been regarded as the state‐of‐the‐art and ideal OER catalysts.…”

Section: Introductionmentioning

confidence: 99%

Two‐Phase Colloidal Synthesis of Amorphous Iron‐Doped Manganese Phosphate Hollow Nanospheres for Efficient Water Oxidation

Liu

Zhang

Wang

et al. 2020

Advanced Sustainable Systems

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phosphates and phosphides is challenging yet imperative. [10,11] Recently, transition metal phosphates have drawn considerable attention in view of their low-cost and promising catalytic activities. [12,13] However, among these transition metal phosphates, the catalytic performance of manganese phosphate is far from satisfactory due to its poor intrinsic activity. [14] In this regard, several strategies including

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Heterostructured WO₃@CoWO₄ bilayer nanosheets for enhanced visible-light photo, electro and photoelectro-chemical oxidation of water

Abstract: Novel WO3@CoWO4 bilayer nanosheets exhibit largely enhanced water oxidation performances compared with WO3 in electrocatalysis, visible-light photocatalysis and photoelectrochemistry.

Cited by 84 publications

References 39 publications

Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

Oxygen Vacancy–Rich In‐Doped CoO/CoP Heterostructure as an Effective Air Cathode for Rechargeable Zn–Air Batteries

Two‐Phase Colloidal Synthesis of Amorphous Iron‐Doped Manganese Phosphate Hollow Nanospheres for Efficient Water Oxidation

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Heterostructured WO3@CoWO4 bilayer nanosheets for enhanced visible-light photo, electro and photoelectro-chemical oxidation of water

Abstract: Novel WO3@CoWO4 bilayer nanosheets exhibit largely enhanced water oxidation performances compared with WO3 in electrocatalysis, visible-light photocatalysis and photoelectrochemistry.

Cited by 84 publications

References 39 publications

Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review

Oxygen Vacancy–Rich In‐Doped CoO/CoP Heterostructure as an Effective Air Cathode for Rechargeable Zn–Air Batteries

Two‐Phase Colloidal Synthesis of Amorphous Iron‐Doped Manganese Phosphate Hollow Nanospheres for Efficient Water Oxidation

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Heterostructured WO₃@CoWO₄ bilayer nanosheets for enhanced visible-light photo, electro and photoelectro-chemical oxidation of water