Stable and efficient self-sustained photoelectrochemical desalination based on CdS QDs/BiVO4 heterostructure

Liang, Mengjun; Zhang, Jiancong; Karthick, R.; Wei, Qiang; Hui, Kwan San; Aung, Su Htike; Hui, Kwun Nam; Chen, Fuming

doi:10.1016/j.cej.2021.132168

Cited by 30 publications

(16 citation statements)

References 84 publications

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“…However, as the desalination process was prolonged, stable changes in the current and salt concentration can be achieved. 58 The calculated solar desalination capacity values in the high-concentration and large volume experiments were, respectively, 0.0876 and 0.0623 μmol/J. Long-term stability tests have shown that our device has the ability to perform desalination for long periods of time.…”

Section: Resultsmentioning

confidence: 83%

“…In the large volume and long-term test, the desalination time reached 28.8 h. The desalination system was initially unstable, especially for a relatively short period of time. However, as the desalination process was prolonged, stable changes in the current and salt concentration can be achieved . The calculated solar desalination capacity values in the high-concentration and large volume experiments were, respectively, 0.0876 and 0.0623 μmol/J.…”

Section: Resultsmentioning

confidence: 97%

“…The EIS and J – V curve tests were performed with a similar two-electrode structure as follows Here, “|” denotes the separation between components. The anode and cathode in the EIS test are either the AC or Pt electrode (Pt electrode fabrication method is discussed in our previous work), and the redox flow stream is I 3 – /I – and [Fe(CN) 6 ] 3 – / 4– electrolytes. In the J – V curve test, the Bi 2 O 3 film is chosen as the anode, with AC as the cathode and I 3 – /I – electrolyte as the redox flow.…”

Section: Methodsmentioning

confidence: 99%

“…The solar desalination capacity (Ec, μmol/J) can be calculated using the following formula Here , V and A cell are denoted with the same meaning as in eq . In addition, M stands for the molar mass of NaCl (58.44 g/mol), and P represents the intensity of the light source (W/cm 2 ).…”

Section: Methodsmentioning

confidence: 99%

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High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi₂O₃ Anode

Zhang

Wang

Liang

et al. 2022

ACS Appl. Mater. Interfaces

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In this work, a solar-driven redox flow desalination system is reported, which combines a solar cell based on a Bi2O3 photoanode and a redox flow desalination cell through an integrated electrode. The Bi2O3 film was prepared through a simple one-step water bath deposition method and served as a photoanode after the coating of the N719 dye. The activated carbon (AC)-coated graphite paper served as both the integrated electrode and counter electrode. The I3 –/I– redox electrolyte circulates in the solar cell channel between the photoanode and intergrated electrode, while the [Fe(CN)6]4–/[Fe(CN)6] 3 – electrolyte circulates in the redox flow desalination part between the integrated electrode and counter electrode. This dye-sensitized solar-driven desalination cell is capable of achieving a maximum salt removal rate of 62.89 μg/(cm2·min) without consuming any electrical power. The combination of the solar cell and redox flow desalination is highly efficient with double functions of desalination and energy release using light as a driving force. This current research work is significant for the development of efficient and stable photoanode materials in photoelectrochemical desalination.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi₂O₃ Anode

Zhang

Wang

Liang

et al. 2022

ACS Appl. Mater. Interfaces

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“…As a substitute for dyes in DSSCs, quantum dots (QDs) create a new class of solar devices called quantum dot-sensitized solar cells, featuring high-density electron injection, and tuning the band gap [30]. A broad spectrum of QDs has thus far been introduced for use in quantum dot solar cells, such as lead sulfide (PbS), cadmium selenide (CdSe), and cadmium telluride (CdTe), opening a new window for developing Schottky, multi-junction, bulk heterojunction, and depleted heterojunction solar panels [31].…”

Section: Quantum Dot Solar Cellsmentioning

confidence: 99%

Perspective Chapter: Technological Advances in Harnessing Energy from Renewable Sources for Water Production

Suwaileh¹,

Isaifan²,

Rahighi³

et al. 2023

Desalination - Ecological Consequences

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Recently, different technologies such as desalination processes have been utilized to obtain fresh water from natural sources to develop good standards of life, flourish industrial activities, and enhance civilization. Hence, this book chapter aims to cover the fundamental aspects of harnessing energy from the sun or solar cells, covering the history of this topic as well as the new related policies. A discussion of the basics of solar cell devices, performance challenges, and long-term stability will follow. This chapter will also address state-of-the-art membrane-based desalination technologies in generating fresh water from various renewable sources such as solar, wind, wave, and geothermal.

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Redox‐Functionalized Semiconductor Interfaces for Photoelectrochemical Separations

Cho

Chen

Elbert

et al. 2023

Small

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Redox‐mediated electrosorption is a promising platform for selective electrochemical (EC) separations, due to its molecular selectivity, high uptake, and tunability for target ions. However, the electrical energy required is mainly generated by non‐renewable energy sources, which limits its sustainability and overall impact to decarbonization. Here, a redox‐mediated photoelectrochemical (PEC) separation process using polyvinyl ferrocene functionalized TiO2 nanorod electrodes is proposed, which integrates direct solar energy as a driver for the selective electrosorption. The photoelectrochemically‐driven oxidation and reduction with both homogeneous and heterogeneous ferrocene‐systems is investigated to establish the underlying mechanism. The PEC system can separate heavy metal oxyanions at lower voltages or even without electrical energy. At 0.3 V versus SCE, a 124 mg g−1 uptake for Mo is achieved, which is comparable to the performance of EC cells at 0.75 V versus SCE. Thus, PEC systems not only can generate energy for spontaneous redox‐separations, but also can reduce electrical energy consumption by 51.4% compared to EC cells for separation processes when coupled with an external electrical energy.

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Stable and efficient self-sustained photoelectrochemical desalination based on CdS QDs/BiVO4 heterostructure

Cited by 30 publications

References 84 publications

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi₂O₃ Anode

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi₂O₃ Anode

Perspective Chapter: Technological Advances in Harnessing Energy from Renewable Sources for Water Production

Redox‐Functionalized Semiconductor Interfaces for Photoelectrochemical Separations

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Stable and efficient self-sustained photoelectrochemical desalination based on CdS QDs/BiVO4 heterostructure

Cited by 30 publications

References 84 publications

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi2O3 Anode

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi2O3 Anode

Perspective Chapter: Technological Advances in Harnessing Energy from Renewable Sources for Water Production

Redox‐Functionalized Semiconductor Interfaces for Photoelectrochemical Separations

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High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi₂O₃ Anode

High-Performance Photoelectrochemical Desalination Based on the Dye-Sensitized Bi₂O₃ Anode