Galvanostatic electrochemical deposition of Cu-doped Mg(OH)2 thin films and fabrication of p-n homojunction

Kang, Jihun; Keikhaei, Mansoureh; Li, Tong; Ichimura, M.

doi:10.1016/j.materresbull.2021.111207

Cited by 8 publications

(4 citation statements)

References 39 publications

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“…The electrolysis method refers to the process in which charged ions in a electrolyte solution move to the two poles under the action of an electric field and discharge on the plates to generate products. The reaction of this method is easy to control, and the prepared products have a small particle size and high purity [20,21]. At present, there are few studies on the properties of Mg(OH) 2 powder prepared by electrolysis, and there is no report on the effect of processing parameters on product particle size.…”

Section: Introductionmentioning

confidence: 99%

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Guo¹,

Li²,

Deng³

et al. 2022

Mater. Res. Express

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In this paper, Mg(OH)2 was prepared by the diaphragm electrolysis method using bischofite (MgCl2·6H2O). The influence of electrolysis process conditions such as current density, electrolysis temperature and electrolyte concentration on powder particle size is discussed. The electrolytic product Mg(OH)2 powder was characterized by laser particle size analysis, XRD, SEM, BET, XRF, and DSC-TGA. The results show that the particle size of Mg(OH)2 powder first increases and then decreases with increasing current density and reaches a maximum D50 value of 20.1 μm at a current density of 0.04 A/cm2. The Mg(OH)2 powder particle size first decreases, then increases and then decreases with increasing electrolysis temperature, at an electrolysis temperature of 60 ℃ and 70 ℃, the particle size reaches a maximum D50 value of 23.8 μm and a minimum D50 value of 7.7 μm, respectively. The Mg(OH)2 powder particle size first increases and then decreases with increasing electrolyte concentration and reaches a maximum D50 value of 22.3 μm at an electrolyte concentration of 0.7 mol/L. The Mg(OH)2 powder prepared at a current density of 0.3 A/cm2, electrolyte concentration of 0.3 mol/L and an electrolysis temperature of 30 ℃ shows an average particle size of 13.8 μm, a purity higher than 98.66%, and a sheet-like structure. The surface area is 58 m2/g. The Mg(OH)2 powder can be decomposed at 300 ℃-400 ℃ and calcined at 400 ℃ for 2 h, through SEM and Scherrer formula calculation, the calcined product is nano-MgO powder with good crystallinity.

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Section: Introductionmentioning

confidence: 99%

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Guo¹,

Li²,

Deng³

et al. 2022

Mater. Res. Express

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“…These modes reveal the formation of Co 3 (PO 4 ) 2 crystals. Similarly, the bands at 276, 444, and 939 cm −1 illustrate the formation of brucite (Mg(OH) 2 ) crystals because these bands originate from E g mode and a combination of (degenerate) of A1 g and E g OH modes [34][35][36]. The recognition of bands that are related to both Co 3 (PO 4 ) 2 and Mg(OH) 2 further confirms the contact between Co 3 (PO 4 ) 2 and Mg(OH) 2 .…”

Section: Physicochemical Characterization Of Photocatalystmentioning

confidence: 99%

Enhanced Electricity Generation in Solar-Driven Photo-Bioelectrochemical Cells Equipped with Co3(PO4)2/Mg(OH)2 Photoanode

Rafieenia,

Mahmoud,

Abdel-Wahed

et al. 2024

Water

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We developed a solar-driven photo-bioelectrochemical cell (s-PBEC) employing a novel anode photocatalyst material (Co3(PO4)2/Mg(OH)2) intimately coupled with electrochemically active bacteria for synergic electricity generation from wastewater. An s-PBEC was inoculated with a natural microbial community and fed with synthetic wastewater to analyze the performance of the system for electricity generation. Linear sweep voltammetry indicated an increase in power output upon light illumination of the s-PBEC after 1 h, rising from 66.0 to 91.5 mW/m2. The current density in the illuminated s-PBEC exhibited a rapid increase, reaching 0.32 A/m2 within 1 h, which was significantly higher than the current density in dark conditions (0.15 A/m2). Shotgun metagenomic analysis revealed a significant shift in the microbial community composition with a more diverse anodic biofilm upon illumination compared to the microbial communities in dark conditions. Three unclassified genera correlated with the enhanced current generation in illuminated s-PBEC, including Neisseriales (16.31%), Betaproteobacteria (7.37%), and Alphaproteobacteria (5.77%). This study opens avenues for further exploration and optimization of the solar-driven photo-bioelectrochemical cells, paving the way for integrative approaches for sustainable energy generation and wastewater treatment.

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“…The MgO thin films have been synthesized by various techniques such as pulsed laser deposition [23], chemical vapour deposition, CVD [24], RF magnetron sputtering [25], sol-gel synthesis [26], spray pyrolysis [27], and electrodepostion [28]- [31]. Among these deposition techniques, electrodeposition has become the most fascinating deposition techniques due to the controllable morphological and structural growth of nanomaterial with optimization of deposition parameters; the technique also allows the fabrication of thin films with high surface area to volume ratio, it is simple, does not required any sophisticated equipment and films can be deposited at low temperatures [32]- [39].…”

Section: Introductionmentioning

confidence: 99%

Influence of Bath pH values on the Structural and Optical Properties of Electrodeposited MgO Thin Films for Optoelectronic applications

Onuegbu

Oluyamo

Olusola

2023

J. Nig. Soc. Phys. Sci.

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This paper investigates the influence of bath pH values on the structural and optical properties of magnesium oxide (MgO) thin films synthesized using electrodeposition technique. The films were deposited on conductive fluorine tin oxide (FTO) substrates using magnesium nitrate hexahydrate as a precursor material. The structural, morphological and optical properties of the electrodeposited films were examined by scanning electron microscopy (SEM), X-ray diffraction and UV-Vis spectrophotometer. The morphology and optical properties of the films were found to vary with bath pH values. The band gap decreased as the bath pH values increased. The deposited MgO films exhibited average transmittance of 80%, 50%, and 25% with thicknesses 400 nm, 480 nm, and 540 nm for bath pH values of 2.0, 5.0, and 9.0, respectively. The results obtained indicate that bath pH values play significant role in the formation of MgO films and can be used to tune the material into useful optoelectronic applications.

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Galvanostatic electrochemical deposition of Cu-doped Mg(OH)2 thin films and fabrication of p-n homojunction

Cited by 8 publications

References 39 publications

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Enhanced Electricity Generation in Solar-Driven Photo-Bioelectrochemical Cells Equipped with Co3(PO4)2/Mg(OH)2 Photoanode

Influence of Bath pH values on the Structural and Optical Properties of Electrodeposited MgO Thin Films for Optoelectronic applications

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Galvanostatic electrochemical deposition of Cu-doped Mg(OH)2 thin films and fabrication of p-n homojunction

Cited by 8 publications

References 39 publications

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)2 powders

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)2 powders

Enhanced Electricity Generation in Solar-Driven Photo-Bioelectrochemical Cells Equipped with Co3(PO4)2/Mg(OH)2 Photoanode

Influence of Bath pH values on the Structural and Optical Properties of Electrodeposited MgO Thin Films for Optoelectronic applications

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Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders

Effect of processing parameters on the properties of electrolytically prepared Mg(OH)₂ powders