Effect of pH on Phase, Morphology and Photocatalytic Properties of BiOBr Synthesized by Hydrothermal Method

Intaphong, Prakasit; Phuruangrat, Anukorn; Kannan, Karthik; Dumrongrojthanath, Phattranit; Thongtem, Titipun; Thongtem, Somchai

doi:10.1007/s10904-019-01259-0

Cited by 59 publications

(17 citation statements)

References 44 publications

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“…The incomplete combustion of aromatic hydrocarbons dissociates their molecules by the break of CH bonds. [ 8 ] It can be clearly noticed that peak's intensity was significantly decreased with the continues loading of CB to the HDPE matrix. This could be attributed to the presence of groups from the CB molecular structures.…”

Section: Resultsmentioning

confidence: 99%

“…Hindermann‐Bischoff and Dolle (2001) have investigated the influence of CB volume fraction on the electrical conductivity of the bulk composites and clarified the effect of positive temperature coefficient (PTC) on the electrical resistivity. [ 1–12 ] In short, the influence of CB on the conductive nature of polymers in general and thermoplastics, in particular, has gained considerable attention by scientists and research engineers. The number of published scientific articles related to this topic has been increasing steadily.…”

Section: Introductionmentioning

confidence: 99%

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Thermal, Electrical, and Sensing Properties of Recycled HDPE/Carbonaceous Industrial Waste Composites

Mohammad

Kannan

et al. 2021

Macromolecular Symposia

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This work is an endeavor to contemplate a value‐added conductive plastic composite material derived as recycled plastic depending on polyethylene (PE)/carbon black (CB). We choose to add CB as a filler material to enhance the electrical conductivity as well as other properties associated with the composite. The solution mixing method is adopted to develop this composite where the consequences of CB loadings on various parameters like processability, morphology, and thermal stability of the composites are examined. The perceived better filler–matrix interaction and filler dispersion observed in the scanning electron microscopy (SEM) is the underlying reason behind the improved properties. The thermal conductivity of high‐density polyethylene (HDPE) with 90 wt% CB is 2.25 W mK−1. Electrical conductivity increases with the increasing amount of the CB loading. The electrical conductivity of 60 wt% CB is 1 × 10−5 S cm−1. Electrical, thermal, and dielectric studies of the prepared plastic composite material will be studied.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal, Electrical, and Sensing Properties of Recycled HDPE/Carbonaceous Industrial Waste Composites

Mohammad

Kannan

et al. 2021

Macromolecular Symposia

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“…The peaks at 110 and 168 cm À 1 are corresponding to pure BiOBr photocatalyst. [35] After the fabrication of BiOBr/Bi 2 S 3, the broad peaks around 172-283 cm À 1 are have appeared in addition to the peaks of BiOBr are slightly shift to the right due to the formation of Bi 2 S 3 nanoparticles. [13] Additionally, CeMOF Raman spectrum is demonstrated in Figure 2d.…”

Section: Description Datamentioning

confidence: 97%

Visible Light‐Driven BiOBr/Bi2S3@CeMOF Heterostructured Hybrid with Extremely Efficient Photocatalytic Reduction Performance of Nitrophenols: Modeling and Optimization

El-Fawal

2021

ChemistrySelect

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The one-pot facile solvothermal process was applied to designed BiOBr/Bi 2 S 3 heterostructured microspheres. The hierarchical BiOBr/Bi 2 S 3 photocatalyst is integrating by solid-state adding of cerium based metal-organic frameworks (CeMOF) using ball mill to fabricate a novel BiOBr/Bi 2 S 3 @CeMOF. The synthesized photocatalysts were examined by XRD (X-Ray diffraction), Raman, FTIR (Fourier transform infrared spectroscopy), XPS (X-Ray photoelectron spectroscopy), FESEM (field emission transmission electron microscopy), FETEM (field emission scanning electron microscopy), UV-Vis DRS (ultraviolet-visible diffuse reflectance), PL (Photoluminescence), and transient photocurrent analysis. The as-prepared BiOBr/ Bi 2 S 3 @CeMOF photomaterial displays considerably enhanced photocatalytic activity for reduction of 4-nitrophenol (4NP) to 4-aminophenol (4AP) compared with the pristine BiOBr and BiOBr/Bi 2 S 3 composite under the irradiation of visible light. The promising BiOBr/Bi 2 S 3 @CeMOF photocatalyst exhibit the high-est photoreduction efficiency of 4NP along with the highest reaction rate (K) (R: 98 %; K: 3.91 min À 1 ) compared with the other as-prepared materials such as CeMOF (R:38 %; 0.23 min À 1 ), BiOBr (R: 48 %; K: 0.65 min À 1 ), Bi 2 S 3 (R:68 %;0.92 min À 1 ), and BiOBr/Bi 2 S 3 (R: 75 %; K: 1.38 min À 1 ) photocatalysts after 30 min of visible light irradiation. The boosted photocatalytic efficiency is attributed to creating the heterojunction at the interface of BiOBr/Bi 2 S 3 @CeMOF, which can powerfully facilitate the separation of the photogenerated carriers. After that, the Box-Behnken design was applied to indicate the optimum condition for the reduction of 4NP under the effect of different variables (e. g., the concentration of NP (A:), pH (B), and concentration of NaBH 4 (C). At the optimum condition (A: 14.5μmol L À 1 , B: 5, and C: 0.88 mol L À 1 ), the photoreduction efficiency (%) of the 4NP is 99.7 %. BiOBr/ Bi 2 S 3 @CeMOF catalyst exhibits excellent photoreduction stability over five successive reaction runs.

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“…The bandgap was found to be 3.42, 4.15, 4.47 eV for the Y2O3 nanoparticles prepared at pH= 7, 8, and 9 respectively. It has been observed that the bandgap energy reveals a blue move in the absorption edge for the samples with enhancing of pH due to their changing morphologies and surface microstructures [27].…”

Section: Uv-drs Spectramentioning

confidence: 99%

Influence of pH on Structural, Morphological, Optical, Photocatalytic, and Antibacterial Properties of Yttrium Oxide Nanoparticles via Co-Precipitation Method

Parangusan¹,

Subramanium²,

Sundarabharathi³

et al. 2021

Preprint

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Yttrium oxide nanoparticles with multiform morphologies have been synthesized by the co-precipitation method. The structure, morphology, functional groups, optical and photoluminescence properties were examined through X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIR), UV-Visible (UV-Vis), Photoluminescence spectra (PL). The XRD patterns obtained for the samples synthesized at various pH values confirmed the cubic structure of Y2O3. The patterns obtained on the samples at pH values of 8 and 9 appeared as have sharp peaks suggested, that the samples were well crystallized. From UV-vis spectra, it revealed that the bandgap energy exhibits a blue shift in the absorption edge for the samples with the increase of pH due to their changing morphologies and surface structures. In the PL spectra, the obtained Y2O3 samples demonstrate an intense and bright UV and blue emission under the excitation wavelength range of 250 nm. The photocatalytic degradation of the Y2O3 nanostructure was studied against the Methylene blue (MB) dye under sunlight irradiation. The results showed good recital under solar light irradiation. Further, the antimicrobial activities of Y2O3 nanostructure against foodborne pathogens (Staphylococcus aureus and Salmonella typhi) were examined by using the disc diffusion method. Moreover, the Y2O3 nanostructure was found to be biocompatible.

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Effect of pH on Phase, Morphology and Photocatalytic Properties of BiOBr Synthesized by Hydrothermal Method

Cited by 59 publications

References 44 publications

Thermal, Electrical, and Sensing Properties of Recycled HDPE/Carbonaceous Industrial Waste Composites

Thermal, Electrical, and Sensing Properties of Recycled HDPE/Carbonaceous Industrial Waste Composites

Visible Light‐Driven BiOBr/Bi2S3@CeMOF Heterostructured Hybrid with Extremely Efficient Photocatalytic Reduction Performance of Nitrophenols: Modeling and Optimization

Influence of pH on Structural, Morphological, Optical, Photocatalytic, and Antibacterial Properties of Yttrium Oxide Nanoparticles via Co-Precipitation Method

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