WO3/Mo:BiVO4 heterojunction structured photoelectrochemical sensor for enhancing hydrogen peroxide monitoring and mechanism investigation

Huang, Lanlan; He, Lihua; Ni, Jing; Liu, Hai; Xu, Zushun; Gong, Chunli; Zhang, Quanyuan; Zhang, Bingqing

doi:10.1016/j.electacta.2022.141641

Cited by 10 publications

(4 citation statements)

References 47 publications

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“…[149][150][151][152] As the oxidation process proceeds, the photoanode undergoes oxidation and dehydrogenatively reforms the chemicals, turning them into value-added chemicals. [153][154][155][156] 3.4 Light-induced modulation An inverse proportionality exists between the current and the effective mass of the material. The effective mass in a semiconductor varies in terms of charge carriers (holes or electrons), crystallographic directions, and electric eld intensity (applying bias).…”

Section: Electrolyte Modulationmentioning

confidence: 99%

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Effective charge separation in photoelectrochemical water splitting: a review from advanced evaluation methods to materials design

Zhang,

Wang

et al. 2024

Sustainable Energy Fuels

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Section: Electrolyte Modulationmentioning

confidence: 99%

“…149–152 As the oxidation process proceeds, the photoanode undergoes oxidation and dehydrogenatively reforms the chemicals, turning them into value-added chemicals. 153–156…”

Section: Strategies To Improve Charge Separation Efficiencymentioning

confidence: 99%

Effective charge separation in photoelectrochemical water splitting: a review from advanced evaluation methods to materials design

Zhang,

Wang

et al. 2024

Sustainable Energy Fuels

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“…Up to now, various PEC materials, such as TiO 2 , ZnO, NiO, CuO and Cu 2 O, have been explored [ 14 , 15 , 16 , 17 ]. Among these PEC nanomaterials, W-based and Mo-based electrocatalysts such as carbides, nitrides, oxides, sulfides and their heterostructures have attracted much interest because of their unique electronic structure and optical properties [ 18 , 19 , 20 , 21 , 22 , 23 ]. For instance, Wang et al reported vertically aligned W(Mo)S 2 /N-W(Mo)C nanosheets to be used as the light-assisted electrocatalysis for HER [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Wang et al reported vertically aligned W(Mo)S 2 /N-W(Mo)C nanosheets to be used as the light-assisted electrocatalysis for HER [ 19 ]. A novel WO 3 /Mo:BiVO 4 heterojunction photoanode has also been constructed for PEC H 2 O 2 sensing [ 22 ]. In addition, a hierarchical Mo 2 C@MoS 2 has been developed for sensitive H 2 O 2 sensing, superior to most of the non-enzymatic electrocatalysts [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Ni/WS2/WC Composite Nanosheets as an Efficient Catalyst for Photoelectrochemical Hydrogen Peroxide Sensing and Hydrogen Evolution

Liu,

Zhu,

Chen

et al. 2024

Materials

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It is highly attractive to develop a photoelectrochemical (PEC) sensing platform based on a non-noble-metal nano array architecture. In this paper, a PEC hydrogen peroxide (H2O2) biosensor based on Ni/WS2/WC heterostructures was synthesized by a facile hydrothermal synthesis method and melamine carbonization process. The morphology, structural and composition and light absorption properties of the Ni/WS2/WC catalyst were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV–visible spectrophotometer. The average size of the Ni/WS2/WC nanosheets was about 200 nm. Additionally, the electrochemical properties toward H2O2 were studied using an electrochemical workstation. Benefiting from the Ni and C atoms, the optimized Ni/WS2/WC catalyst showed superior H2O2 sensing performance and a large photocurrent response. It was found that the detection sensitivity of the Ni/WS2/WC catalyst was 25.7 μA/cm2/mM, and the detection limit was 0.3 mmol/L in the linear range of 1−10 mM. Simultaneously, the synthesized Ni/WS2/WC electrode displayed excellent electrocatalytic properties in hydrogen evolution reaction (HER), with a relatively small overpotential of 126 mV at 10 mA/cm2 in 0.5 M H2SO4. This novel Ni/WS2/WC electrode may provide new insights into preparing other efficient hybrid photoelectrodes for PEC applications.

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Tethering Cobalt Ions to BiVO₄ Surface via Robust Organic Bifunctional Linker for Efficient Photoelectrochemical Water Splitting

Jahangir,

Ahmed,

Ullah

et al. 2024

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In the quest for efficient and stable oxygen evolution catalysts (OECs) for photoelectrochemical water splitting, the surface modification of BiVO4 is a crucial step. In this study, a novel and robust OEC, based on 3‐(bis(pyridin‐2‐ylmethyl) amino) propanoic acid bifunctional linker known as dipicolyl alanine acid (DPAA) and cobalt ions, is prepared and fully characterized. The DPAA is anchored to the surface of BiVO4 and utilized to tether cobalt ions. The Co‐DPAA/BiVO4 photoanode exhibits remarkable stability and efficiency toward photoelectrochemical water oxidation. Specifically, it showed anodic photocurrent increase of 7.1, 5.0, 3.0, and 1.3‐fold at 1.23 VRHE as compared to pristine BiVO4, DPAA/BiVO4, Co‐BiVO4, and Co‐Pi/BiVO4 photoanodes, respectively. The photoelectrochemical and IMPS studies revealed that the Co‐DPAA/BiVO4 photoanode exhibits a longer transient decay time for surface‐trapped holes, higher charge transfer kinetics, and charge separation efficiency compared to Co‐Pi/BiVO4 and pristine BiVO4 photoelectrodes. This indicates that the Co‐DPAA effectively reduces surface recombination and facilitates charge transfer. Moreover, at 1.23 VRHE, the Co‐DPAA/BiVO4 photoanode achieved a faradic efficiency of 92% for oxygen evolution reaction and could retain a turnover frequency of 3.65 s−1. The exhibited efficiency is higher than most of the efficient molecular oxygen evolution catalysts based on Ru.

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WO3/Mo:BiVO4 heterojunction structured photoelectrochemical sensor for enhancing hydrogen peroxide monitoring and mechanism investigation

Cited by 10 publications

References 47 publications

Effective charge separation in photoelectrochemical water splitting: a review from advanced evaluation methods to materials design

Effective charge separation in photoelectrochemical water splitting: a review from advanced evaluation methods to materials design

Ni/WS2/WC Composite Nanosheets as an Efficient Catalyst for Photoelectrochemical Hydrogen Peroxide Sensing and Hydrogen Evolution

Tethering Cobalt Ions to BiVO₄ Surface via Robust Organic Bifunctional Linker for Efficient Photoelectrochemical Water Splitting

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WO3/Mo:BiVO4 heterojunction structured photoelectrochemical sensor for enhancing hydrogen peroxide monitoring and mechanism investigation

Cited by 10 publications

References 47 publications

Effective charge separation in photoelectrochemical water splitting: a review from advanced evaluation methods to materials design

Effective charge separation in photoelectrochemical water splitting: a review from advanced evaluation methods to materials design

Ni/WS2/WC Composite Nanosheets as an Efficient Catalyst for Photoelectrochemical Hydrogen Peroxide Sensing and Hydrogen Evolution

Tethering Cobalt Ions to BiVO4 Surface via Robust Organic Bifunctional Linker for Efficient Photoelectrochemical Water Splitting

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Product

Resources

About

Tethering Cobalt Ions to BiVO₄ Surface via Robust Organic Bifunctional Linker for Efficient Photoelectrochemical Water Splitting