Promoting effects of Y doping and FeOOH loading for efficient photoelectrochemical activity on BiVO<sub>4</sub> electrodes

Guo, Yuwei; Han, Wei; Zhao, Kaichen; Hao, Shaojun; Shi, Shenggang; Ding, Yongping

doi:10.1039/d2nj01371a

Cited by 2 publications

(2 citation statements)

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“…CNTs should be loaded in the composite in the most optimal manner possible. It is crucial to determine the right balance between the amount of CNTs and BiVO 4 to maximize photothermal performance and achieve synergistic effects [35,36]. Insufficient interaction between CNTs can result in insufficient charge transfer, whereas excessive CNT concentration could result in aggregation and decreased light absorption.…”

Section: Resultsmentioning

confidence: 99%

Multi-Walled CNTs/BiVO4 Heterostructures for Solar-Driven Evaporation System and Efficient Photocatalytic Activity against Oxytetracycline

Alomar,

Arshad,

Irshad

et al. 2023

Nanomaterials

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Developing a sustainable environment requires addressing primitive water scarcity and water contamination. Antibiotics such as oxytetracycline (OTC) may accumulate in the environment and in the human body, increasing the risks to the ecosystem. The treatment of polluted water and the production of potable water can be achieved in a variety of ways, including photodegradation, solar distillation, and filtration. Freshwater supplies can be increased by implementing energy-efficient technologies for the production of clean water. Solar water evaporation combined with photocatalytic degradation and sterilization offers a promising avenue for integration into the clean water and energy production fields. The present study reports the synthesis of a 3D solar steam generator comprised of BiVO4 and carbon nanotubes (CNT) nanocomposite decorated over a cigarette filter as the light-to-heat conversion layer for solar steam generation. The BiVO4@CNT-based 3D solar evaporator over the hydrophilic cellulosic fibers of the cigarette filter endowed excellent evaporation rates (2.36 kg m−2 h−1) under 1 kW m−2 solar irradiation, owing to its superior hydrophilicity and broadband solar absorption (96%) equipped with localized heating at microscale thermal confinement optimized by the minimum thermal conductivity of the overall system. Furthermore, the BiVO4@CNT composite exhibited a heightened photo activity up to 83% of the photodegradation of oxytetracycline (OTC) antibiotic due to the inhibition of charge recombination from the industrial effluents. This approach transforms the water-energy nexus into a synergistic bond that offers opportunities to meet expected demand, rather than being competitive.

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Section: Resultsmentioning

confidence: 99%

Multi-Walled CNTs/BiVO4 Heterostructures for Solar-Driven Evaporation System and Efficient Photocatalytic Activity against Oxytetracycline

Alomar,

Arshad,

Irshad

et al. 2023

Nanomaterials

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“…Among them, Nickel–iron (oxy) hydroxides(NiFeOOH) is considered as one of the most active cocatalysts for PEC water splitting, due to its nanostructure suitable for PEC, efficient light absorption, rapid charge transfer, and low overpotential . Several investigations have concentrated on the interface chemical modification of NiFeOOH electrocatalysts with high-performance semiconductor photoanodes (e.g., α-Fe 2 O 3 , BiVO 4 , WO 3 , , and n-Si) to enhance the efficiency of photoelectrocatalytic water oxidation reactions. The research literature provides ample evidence that bimetallic transition metal-based hydroxides (e.g., NiFeOOH and CoAlOOH) exhibit enhanced oxygen evolution reaction (OER) activity compared to their monometallic analogues, owing to the modulation of band edge positions and adsorption energies .…”

Section: Introductionmentioning

confidence: 99%

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO₂ Coupled with Ultrathin NiFeOOH

Ding,

Wang,

Chu

et al. 2024

ACS Appl. Energy Mater.

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In order to solve the problem of slow water oxidation kinetics and charge complexation of the BiVO 4 photoanode, CeO 2 octahedral nanomaterials doped with different amounts of NaH 2 PO 4 (COP3) were synthesized by a hydrothermal method in one step. CeO 2based materials have been widely studied in the fields of organic catalysis, photocatalysis to decompose water, and photodegradation of organic pollutants, showing excellent photocatalytic properties. The heterostructure formed by MW:BVO and COP3 (doped with 0.002 g of NaH 2 PO 4 ) expands the light absorption range and accelerates the separation of the internal carriers. In order to further improve the photocatalytic performance, the MW:BVO/COP3@NiFeOOH (immersion time of 1 h and pH = 8, respectively) composite was prepared by introducing NiFeOOH. As a metal oxide coating additive, NiFeOOH can rapidly capture holes and effectively use these holes for water oxidation on the photoelectrode surface through a cyclic catalytic process. In addition, MW:BVO/COP3@NiFeOOH nanocomposites can effectively increase the active surface area and accelerate the interfacial charge transfer. The final prepared MW:BVO/COP3@NiFeOOH nanocomposites showed excellent photocurrent density (4.8 mA cm −2 at 1.23 V vs RHE) in LSV tests due to the efficient separation and transfer of photogenerated carriers. It can be seen that the interaction between MW:BVO, COP3, and NiFeOOH not only improves the performance of this new class of materials but also highlights the importance of COP3 as an important component worthy of further study.

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Promoting effects of Y doping and FeOOH loading for efficient photoelectrochemical activity on BiVO₄ electrodes

Abstract: Bismuth vanadate (BiVO4) has been widely applied as photoelectrode material, while its insufficient charge separation and utilization efficiency have been the major obstacle in photoelectrochemical (PEC) water oxidation. Herein, a...

Cited by 2 publications

References 48 publications

Multi-Walled CNTs/BiVO4 Heterostructures for Solar-Driven Evaporation System and Efficient Photocatalytic Activity against Oxytetracycline

Multi-Walled CNTs/BiVO4 Heterostructures for Solar-Driven Evaporation System and Efficient Photocatalytic Activity against Oxytetracycline

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO₂ Coupled with Ultrathin NiFeOOH

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Promoting effects of Y doping and FeOOH loading for efficient photoelectrochemical activity on BiVO4 electrodes

Abstract: Bismuth vanadate (BiVO4) has been widely applied as photoelectrode material, while its insufficient charge separation and utilization efficiency have been the major obstacle in photoelectrochemical (PEC) water oxidation. Herein, a...

Cited by 2 publications

References 48 publications

Multi-Walled CNTs/BiVO4 Heterostructures for Solar-Driven Evaporation System and Efficient Photocatalytic Activity against Oxytetracycline

Multi-Walled CNTs/BiVO4 Heterostructures for Solar-Driven Evaporation System and Efficient Photocatalytic Activity against Oxytetracycline

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO2 Coupled with Ultrathin NiFeOOH

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Product

Resources

About

Promoting effects of Y doping and FeOOH loading for efficient photoelectrochemical activity on BiVO₄ electrodes

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO₂ Coupled with Ultrathin NiFeOOH