Investigations of photoelectrochemical performance of polycrystalline Bi-doped ZnO thin films

Khan, Humaira; Akram, Rehana; Aamir, Muhammad; Malik, Mohammad Azad; Tahir, Asif Ali; Choudhary, Muhammad Aziz; Akhtar, Javeed

doi:10.1016/j.jpcs.2023.111529

Cited by 8 publications

(2 citation statements)

References 54 publications

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“…Poor photocurrent density, low photocurrent-hydrogen transformation efficiency due to a low absorption coefficient [9], greater surface recombination [10,11], and ultraviolet absorption due to a wide band gap (3.3 eV) limit its practical application [12]. Ion doping, quantum dot sensitization [50,51], and composite fabrication have made ZnO visiblerange active [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Rational approach for expanding functionality of wurtzite rectangle nano‐sheets based photoanode for improved photoelectrochemical water‐splitting performance

Rashid Khan,

Dawood,

Akhtar

et al. 2024

Electroanalysis

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Section: Introductionmentioning

confidence: 99%

Rational approach for expanding functionality of wurtzite rectangle nano‐sheets based photoanode for improved photoelectrochemical water‐splitting performance

Rashid Khan,

Dawood,

Akhtar

et al. 2024

Electroanalysis

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“…Indubala and co-workers [54] increased carrier concentration in the ZnO/CuI heterojunction diode with L-alanine capping of ZnO nanorods. Khan and co-workers [55] investigated the photoelectrochemical performance of polycrystalline Bi-doped ZnO thin films. Deva Kumar and co-workers [56] reported on gold-reduced graphene oxide and BiVO 4 /ZnO mixed oxide composite with leveraged charge carrier transport under solar radiation.…”

Section: Introductionmentioning

confidence: 99%

Strong Interface Interaction of ZnO Nanosheets and MnSx Nanoparticles Triggered by Light over Wide Ranges of Wavelength to Enhance Their Removal of VOCs

Ma,

Zhang,

Gao

et al. 2023

Coatings

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The characteristics of the surface and interface of nanocomposites are important for exerting multi-functional properties and widening interdisciplinary applications. These properties are mainly depending on the electronic structures of materials. Some key factors, such as the surface, interface, grain boundaries, and defects take vital roles in the contribution of desired properties. Due to the excellent sensitivity of the QCM (quartz crystal microbalance) device, the surface and interface features of the nanocomposite were studied with the aid of the gas-response of the sensors (Sensor’s Gas-Sensitivity) in this work. To make full use of the visible light and part of NIR, a ZnO/MnSx nanocomposite was constructed using hydrothermal synthesis for narrowing the bandgap width of wide bandgap materials. The results indicated that the absorbance of the resulting nanocomposite was extended to part of the NIR range due to the introduction of impurity level or defect level, although ZnO and MnS belonged to wide bandgap semiconductor materials. To explore the physical mechanism of light activities, the photoconductive responses to weak visible light (650 nm, etc.) and NIR (near-infrared) (808 nm, 980 nm, and 1064 nm, etc.) were studied based on interdigital electrodes of Au on flexible PET (polyethylene terephthalate) film substrate with the casting method. The results showed that the on/off ratio of ZnO/MnSx nanocomposite to weak visible light and part of NIR light were changed by about one to five orders of magnitude, with changes varying with the amount of MnSx nanoparticle loading due to defect-assisted photoconductive behavior. It illustrated that the ZnO/MnSx nanocomposite easily produced photo-induced free charges, effectively avoiding the recombination of electrons/holes because of the formation of strong built-in electrical fields. To examine the surface and interface properties of nanocomposites, chemical prototype sensor arrays were constructed based on ZnO, ZnO/MnSx nanocomposite, and QCM arrays. The adsorption response behaviors of the sensor arrays to some typical volatile compounds were examined under a similar micro-environment. The results exhibited that in comparison to ZnO nanosheets, the ZnO nanosheets/MnSx nanocomposite increased adsorption properties to some typical organic volatile compounds significantly. It would have good potential applications in photo-catalysts, self-cleaning films, multi-functional coatings, and organic pollutants treatment (VOCs) of environmental fields for sustainable development. It provided some reference value to explore the physical mechanism of materials physics and photophysics for photo-active functional nanocomposites.

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Electrochemical and Theoretical Concepts of Microbial Electrolysis Cells

Khan,

Ahmad,

Shuja Syed

et al. 2024

Sustainable Materials and Technology

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Investigations of photoelectrochemical performance of polycrystalline Bi-doped ZnO thin films

Cited by 8 publications

References 54 publications

Rational approach for expanding functionality of wurtzite rectangle nano‐sheets based photoanode for improved photoelectrochemical water‐splitting performance

Rational approach for expanding functionality of wurtzite rectangle nano‐sheets based photoanode for improved photoelectrochemical water‐splitting performance

Strong Interface Interaction of ZnO Nanosheets and MnSx Nanoparticles Triggered by Light over Wide Ranges of Wavelength to Enhance Their Removal of VOCs

Electrochemical and Theoretical Concepts of Microbial Electrolysis Cells

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