Photoelectrocatalytic removal of organic dyes and Cr(VI) ions using Ag3PO4 nanoparticles sensitized TiO2 nanotube arrays

Wang, Qingyao; Zheng, Qiaodan; Jin, Rencheng; Gao, Shanmin; Yuan, Qianqin; Rong, Wen-Qian; Wang, Renliang

doi:10.1016/j.matchemphys.2017.06.051

Cited by 24 publications

(3 citation statements)

References 26 publications

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“…Incorporating spherical nanostructures greatly expanded the reaction area, resulting in additional improvements [253]. Another effective approach for Cr 6+ removal involved integrating Ag 3 PO 4 into TiO 2 nanotube arrays, which exhibited equal efficacy in removing organic dyes [254].…”

Section: Tio 2 -Based Photocatalysts For Effective Elimination Of Hea...mentioning

confidence: 99%

Photocatalytic TiO2-Based Nanostructures as a Promising Material for Diverse Environmental Applications: A Review

Gatou,

Syrrakou,

Lagopati

et al. 2024

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Contemporary technological and industrial advancements have led to increased reliance on chemicals for product innovation, leading to heightened contamination of water sources by traditional pollutants (organic dyes, heavy metals) and disease-causing microorganisms. Wastewater treatment processes now reveal “emerging pollutants”, including pharmaceuticals, endocrine disruptors, and agricultural chemicals. While some are benign, certain emerging pollutants can harm diverse organisms. Researchers seek cost-effective water purification methods that completely degrade pollutants without generating harmful by-products. Semiconductor-based photocatalytic degradation, particularly using titanium dioxide (TiO2), is popular for addressing water pollution. This study focuses on recent applications of TiO2 nanostructures in photocatalysis for eliminating various water pollutants. Structural modifications, like doping and nanocomposite formation, enhance photocatalyst performance. The study emphasizes photocatalytic elimination mechanisms and comprehensively discusses factors impacting both the mechanism and performance of nano-TiO2-based photocatalysts. Characteristics of TiO2, such as crystal structure and energy band-gap, along with its photocatalytic activity mechanism, are presented. The review covers the advantages and limitations of different TiO2 nanostructure production approaches and addresses potential toxicity to human health and the environment. In summary, this review provides a holistic perspective on applying nano-TiO2 materials to mitigate water pollution.

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Section: Tio 2 -Based Photocatalysts For Effective Elimination Of Hea...mentioning

confidence: 99%

Photocatalytic TiO2-Based Nanostructures as a Promising Material for Diverse Environmental Applications: A Review

Gatou,

Syrrakou,

Lagopati

et al. 2024

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“…If it is a short chain ligand, the charge transport is greatly enhanced whereas the charge transport is suppressed for the longer chain ligands. Sensitization of TiO 2 nanotubes and other hierarchical structures by inorganic semiconductor nanoparticles are widely studied for the photocatalytic applications [23,182,246,247,270]. But, in recent years there are considerable research also focused for the solar cell applications.…”

Section: Co-sensitization By Quantumdots On Tio 2 Nanotube Array Photmentioning

confidence: 99%

Role of co-sensitization in dye-sensitized and quantum dot-sensitized solar cells

et al. 2019

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Novel materials for third generation solar cells have emerged as one of the major scientific contribution in alternative energy approaches. In this scenario, semiconductor nanomaterials and organic dye molecules have greatly acknowledged for their vast contribution to the solar energy applications. Research on semiconductor nanomaterials for fabricating future generation solar cells is still fascinating due to their extraordinary structural and optical properties. Moreover, functionalization of organic dye molecules helps to harvest large amount of photons in order to apply them for high efficiency solar cell devices. Various attempts have been made to improve efficiency of quantum dot-sensitized solar cells and dye-sensitized solar cells using semiconductor inorganic nanomaterials and organic/organometallic dye molecules. Out of these, co-sensitization has been looking as most promising approach to improve the efficiency considerably. A record of over 14% of efficiency has been achieved in recent years through co-sensitization strategy. The energy transfer process during co-sensitization is also a very crucial and interesting. This review deals about materials, methods, various approaches and role of co-sensitization in enhancing the efficiency of dye-sensitized and quantum dot sensitized solar cells. The critical issues existing in the co-sensitization approach are also elaborately discussed.

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“…The method for organic dye removal has been developed to improve the efficiency and practical in process [2]. The photoelectrocatalytic technique (PEC) for organic dyes degradation is attractive method with high efficient and practical use [3][4][5]. The critical factors of PEC development are metal oxide selection and the deposition method on the substrate.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic and Ultrasonic-Assisted Effects for Organic Dye Degradation Using Zinc Oxide (ZnO) Electrode

Lunkham

Ngernchuklin

Ponchio

2019

KEM

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The organic dye is one of the carcinogenic and toxic substrates that are used as the colorant in industries. Therefore, we have to develop the efficient technique to remove the dye in wastewater. This research aimed to develop the photoelectrocatalytic (PEC) cell with the high efficiency, which offered a simple method to remove dye from the wastewater. The ZnO photoanode electrode was considered for developing to enhance the efficiency of PEC cell for dye degradation. The ZnO electrode was fabricated by cyclic voltammetry method and then was compared the oxidation efficiency to ZnO electrode from dip coating. The film thickness of ZnO was controlled by the number of scan for a cyclic voltammetric method and the deposition time for the dip coating method. The effects of scan rate, the number of scan and calcination temperature were optimized to obtain the highest oxidation efficiency. Absorption properties, photoelectrocatalytic activity and electrochemical impedance spectroscopy (EIS) were measured to confirm the characteristic of the two fabricated electrodes. The results showed that ZnO electrode fabricated by cyclic voltammetry presented higher photoelectrocatalytic activity for water oxidation than that from dip coating. Thus, in this research was development ZnO electrode by cyclic voltammetry to degrade organic dye using the photoelectrocatalytic technique. The efficiency of dye degradation was evaluated by the decreasing absorption of methylene blue dye (5 mg/L) as a function of time. It was found that the photoelectrocatalytic dye degradation efficiency with ultrasonic-assisted was enhanced up to two times with 71% degradation in 1 hour. Therefore, we concluded that the developed ZnO electrode by cyclic voltammetry demonstrated a high photoelectrocatalytic performance with ultrasonic-assisted degradation of organic dyes.

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Photoelectrocatalytic removal of organic dyes and Cr(VI) ions using Ag3PO4 nanoparticles sensitized TiO2 nanotube arrays

Cited by 24 publications

References 26 publications

Photocatalytic TiO2-Based Nanostructures as a Promising Material for Diverse Environmental Applications: A Review

Photocatalytic TiO2-Based Nanostructures as a Promising Material for Diverse Environmental Applications: A Review

Role of co-sensitization in dye-sensitized and quantum dot-sensitized solar cells

Photoelectrocatalytic and Ultrasonic-Assisted Effects for Organic Dye Degradation Using Zinc Oxide (ZnO) Electrode

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