Photoelectrocatalytic hydrogen generation and simultaneous degradation of organic pollutant via CdSe/TiO2 nanotube arrays

Wang, Qianqian; Li, Fang; Zhang, Dieqing; Leung, Dennis Y.C.; Li, Guisheng

doi:10.1016/j.apsusc.2015.11.228

Cited by 87 publications

(20 citation statements)

References 46 publications

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“…The PEC process was performed with simultaneous hydrogen generation. CdSe is another semiconductor that was coupled with TiO 2 nanotube arrays and applied in the PEC degradation of methyl orange [196]. CdSe is a n-type semiconductor with the band gap energy of 1.7 eV.…”

Section: Composite Semiconductor Photoelectrode Materialsmentioning

confidence: 99%

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Kuśmierek

2020

Catalysts

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Industrial sources of environmental pollution generate huge amounts of industrial wastewater containing various recalcitrant organic and inorganic pollutants that are hazardous to the environment. On the other hand, industrial wastewater can be regarded as a prospective source of fresh water, energy, and valuable raw materials. Conventional sewage treatment systems are often not efficient enough for the complete degradation of pollutants and they are characterized by high energy consumption. Moreover, the chemical energy that is stored in the wastewater is wasted. A solution to these problems is an application of photoelectrocatalytic treatment methods, especially when they are coupled with energy generation. The paper presents a general overview of the semiconductor materials applied as photoelectrodes in the treatment of various pollutants. The fundamentals of photoelectrocatalytic reactions and the mechanism of pollutants treatment as well as parameters affecting the treatment process are presented. Examples of different semiconductor photoelectrodes that are applied in treatment processes are described in order to present the strengths and weaknesses of the photoelectrocatalytic treatment of industrial wastewater. This overview is an addition to the existing knowledge with a particular focus on the main experimental conditions employed in the photoelectrocatalytic degradation of various pollutants with the application of semiconductor photoelectrodes.

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Section: Composite Semiconductor Photoelectrode Materialsmentioning

confidence: 99%

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Kuśmierek

2020

Catalysts

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“…[27][28][29][30] Recently, Chang et al 31 found that brookite H:TiO 2 cosensitized by CdS/CdSe can improve its charge transfer efficiency and photocurrent density. Wang et al 32 reported that CdSe-modified TiO 2 nanotube arrays displayed excellently PEC performance and photocatalytic activity toward organic pollutant degradation. Those are powerful proofs that 1D CdSe/TiO 2 heterostructure displays inimitable advantage in comparison with conventional particulate system in the field of photoelectrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Construction of CdSe@TiO ₂ core‐shell nanorod arrays by electrochemical deposition for efficient visible light photoelectrochemical performance

Zhuang

Liu

et al. 2019

Int J Energy Res

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Summary The CdSe@TiO2 core‐shell nanorod arrays for photoelectrochemical (PEC) application were designed and constructed by a facile electrochemical deposition strategy. The CdSe@TiO2 photoanodes exhibit highly efficient PEC performance under visible light irradiation, among which the CdSe shell layer thickness can be precisely adjusted by different electrodeposition time. In comparison with nude TiO2 nanorods, the optimized CdSe@TiO2 photoanode (TC‐500) shows a significant saturated photocurrent density of 2.1 mA/cm2 at 0 V (vs Ag/AgCl), which is attributed to the good distribution of CdSe nanoparticles on TiO2 nanorod arrays, the favorable band alignment, and the intimate interfacial interaction between CdSe nanoparticles and TiO2 nanorods. The introduction of CdSe shell layer does not only improve light absorption ability but also enhances photogenerated charge carrier's transfer and separation. This current work systematically studies the accurate adjustment of CdSe shell layer thickness on TiO2 nanorod arrays by electrochemical deposition strategy and provides a paradigm to design and fabricate heterostructure composite for PEC application.

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“…The characteristic diffraction peaks of Titanium metal have been clearly observed in Figure S2a . [30] The diffraction peaks at the positions of 2θ = 35.09, 38.42, 40.17, 53.00, 62.95, 70.66, and 76.22°( Figure S2a . [31] As shown in Figure S2c, the diffraction peaks at 2θ = 27.44 and 36.08°are attributed to the (110) and (101) rutile phase of TiO 2 (JCPDS No.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Charge Transfer Process in Morphology Restructured TiO₂ Nanotubes via Hydrochloric Acid Assisted One Step In‐Situ Hydrothermal Approach

Dhandole

Park

et al. 2019

ChemCatChem

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In this study, we demonstrate the enhanced photoelectrochemical (PEC) performance of the titanium foil based TiO2 nanotube (TNT) array through a simple hydrothermal (HT) acid treatment method. The influence of hydrochloric acid (HCl) concentration variation in HT method on morphology and the photoelectrochemical performances of TNTs nanostructures were studied. Field Emission Scanning Electron Microscopy and X‐ray powder diffraction results confirmed the morphology and crystal structure easily restructured during HCl assisted one step in‐situ hydrothermal approach. The photocurrent density of optimized acid treated TiO2 nanotube (TH‐40) electrode was observed to be 2‐times higher than the pristine TNT electrode. Thereafter, TH‐40 sample exhibited noticeably photoelectrochemical solar hydrogen production of 66 μmol and 82 μmol in NaOH and Na2S/Na2SO3 electrolytes respectively than the pristine TNT. The enhancement of photocatalytic activity was ascribed to the restructured morphology, as well as the efficient charge separation at rutile‐anatase interface in the TH‐40 sample as well as at the electrode‐electrolyte interface. A hydrochloric acid assisted one step in‐situ hydrothermal approach tailors the crystal structure and morphological features, which enhanced the photoelectrochemical properties of TiO2 nanotube.

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Photoelectrocatalytic hydrogen generation and simultaneous degradation of organic pollutant via CdSe/TiO2 nanotube arrays

Cited by 87 publications

References 46 publications

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Construction of CdSe@TiO ₂ core‐shell nanorod arrays by electrochemical deposition for efficient visible light photoelectrochemical performance

Enhanced Charge Transfer Process in Morphology Restructured TiO₂ Nanotubes via Hydrochloric Acid Assisted One Step In‐Situ Hydrothermal Approach

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Photoelectrocatalytic hydrogen generation and simultaneous degradation of organic pollutant via CdSe/TiO2 nanotube arrays

Cited by 87 publications

References 46 publications

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Construction of CdSe@TiO 2 core‐shell nanorod arrays by electrochemical deposition for efficient visible light photoelectrochemical performance

Enhanced Charge Transfer Process in Morphology Restructured TiO2 Nanotubes via Hydrochloric Acid Assisted One Step In‐Situ Hydrothermal Approach

Contact Info

Product

Resources

About

Construction of CdSe@TiO ₂ core‐shell nanorod arrays by electrochemical deposition for efficient visible light photoelectrochemical performance

Enhanced Charge Transfer Process in Morphology Restructured TiO₂ Nanotubes via Hydrochloric Acid Assisted One Step In‐Situ Hydrothermal Approach