One-pot fabrication of BiPO4/Bi2S3 hybrid structures for visible-light driven reduction of hazardous Cr(VI)

Geioushy, Ramadan A.; El‐Sheikh, Said M.; Azzam, Ahmed B.; Salah, Bahaa Ahmed; El-Dars, Farida M. S. E.

doi:10.1016/j.jhazmat.2019.120955

Cited by 76 publications

(18 citation statements)

References 65 publications

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“…The O 1s spectrum (Fig. 2c) showed 3-peaks of (O-Zn-O, C-O and C=O) at (530.34, 531.25, and 533.22 eV), respectively [52][53][54]. The N 1s spectrum (Fig.…”

Section: Ft-ir and Uv-vis Spectramentioning

confidence: 93%

WITHDRAWN: Zn(II) Metal-organic Framework Nanoparticles: Synthesis, Characterization and Application as Optical Biosensor for Prostate-Specific Antigen

El‐Sheikh

2021

Preprint

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PSA, abbreviated of “Prostate-Specific Antigen” is widely used as a considered a significant cancer biomarker for diagnosing prostate cancer. Improvement of a fast, facile, and less cost with high accurate/sensitive/selective methodologies for the PSA determination is stock-still a challenge. In this work, we reported a simple biosensor based on a Zn(II) metal-organic framework nanoparticles (Zn-MOF-NPs) derived from reaction of zinc acetate with nano organic linker. The structure, morphology, and physicochemical properties of the prepared Zn(II)-MOF-NPs were definite using various spectroscopic and microanalytical tools as SEM-EDX, HR-TEM, XRD, XPS, elemental analysis, FT-IR, UV-vis spectroscopy, mass spectroscopy, thermogravimetric Analysis (DSC/TGA), and photoluminescence (PL). Obviously, the results revealed that the Zn(II)-MOF-NPs is chemical stable, highly selective and sensitive to PSA, without interferences with other common interfering analytes. The detection limit for PSA was 0.145 fg/mL, in a wide-linear range of concentrations (0.1 fg/mL-20 pg/mL), with a correlation coefficient 0.983. The Zn(II)-MOF-NPs was successfully used as an up-and-coming biosensor for PSA-monitoring and quantification in biological real samples (plasma/whole blood/serum) at clinical target concentration levels. Moreover, the present approach will help the human-beings from the hazard’s prostatic cancer through early discovery and diagnosis process via the detection of PSA at low limits of concentrations. Meantime, the interaction mechanism between the Zn(II)-MOF-NPs and PSA was well studied and investigated.

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“…The O 1s spectrum (Fig. 2c) showed 3-peaks of (O-Zn-O, C-O and C=O) at (530.34, 531.25, and 533.22 eV), respectively [52][53][54]. The N 1s spectrum (Fig.…”

Section: Ft-ir and Uv-vis Spectramentioning

confidence: 93%

WITHDRAWN: Zn(II) Metal-organic Framework Nanoparticles: Synthesis, Characterization and Application as Optical Biosensor for Prostate-Specific Antigen

El‐Sheikh

2021

Preprint

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“…In recent decades, the scientic community has addressed widely the application of bismuth based nanomaterials such as BiOBr, Bi 2 S 3 , BiPO 4 , BiVO 4 , Bi 2 WO 6 , Bi 2 O 2 CO 3 in different catalytic applications thanks to their appropriate physicochemical and photonic characteristics. [31][32][33][34][35][36] In particular, BiPO 4 as a new bismuth salt catalyst, which has been developed for the rst type by Zhu's group, has been revealed as promising candidate in semiconductor catalysis due to its highly photocatalytic efficiency under UV light which was found to be superior that TiO 2 (P25, Degussa) towards the oxidation of dyes. 37 However, the catalytic performance of BiPO 4 has been greatly restricted.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO₄/g-C₃N₄ nanostructures in the presence of NaBH₄

et al. 2021

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“…The k of 3%BFO/ HRP was the highest, which was about 15 times than that of pure HRP. In addition, some typical RP-based photocatalysts and bismuth-based photocatalysts used for the treatment of Cr(VI) wastewater in recent years were shown in Table S1 21,22,25,26,[39][40][41][42][43][44] . The 3%BFO/HRP composite exhibited better performance and obvious advantages, indicating that the catalyst had a unique potential in the treatment of Cr(VI) wastewater.…”

Section: Xps Analysismentioning

confidence: 99%

Construction of Bi₂Fe₄O₉/red phosphorus heterojunction for rapid and efficient photo‐reduction of Cr(VI)

Zhu

Zhao

et al. 2021

J Am Ceram Soc

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Construction of heterojunctions with matching energy band structures between two semiconductors displays great potential in promoting the separation and transfer of photogenerated charge carriers and is one of the effective strategies for obtaining high active photocatalysts. In this study, a type-II heterojunction photocatalyst was designed and prepared using Bi 2 Fe 4 O 9 (BFO) nanoparticles and hydrothermaltreated red phosphorus (HRP). The photocatalytic performance test exhibited that the 3%BFO/HRP composite photocatalyst with 3% mass fraction of BFO rapidly and efficiently photoreduced Cr(VI), and the reduction was completed within 25 min, with a rate constant of 0.15 min −1 , which was 15 times higher than that of pure HRP. Further mechanistic investigation revealed that the photocatalytic activity was enhanced due to the tight heterojunction between BFO and HRP, thereby effectively promoting carrier transfer, destroying the carrier recombination, and reducing the charge-transfer resistance of composite catalyst. Mott-Schottky diagrams and UV-vis diffuse reflectance spectroscopy data indicated the theoretical feasibility of establishing a close contact between BFO and HRP. X-ray photoelectron spectroscopy provided evidence for the way in which interfacial charges were transferred. This work provides a new possibility to construct heterojunction photocatalysts for the rapid and efficient reduction of Cr(VI).

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One-pot fabrication of BiPO4/Bi2S3 hybrid structures for visible-light driven reduction of hazardous Cr(VI)

Cited by 76 publications

References 65 publications

WITHDRAWN: Zn(II) Metal-organic Framework Nanoparticles: Synthesis, Characterization and Application as Optical Biosensor for Prostate-Specific Antigen

WITHDRAWN: Zn(II) Metal-organic Framework Nanoparticles: Synthesis, Characterization and Application as Optical Biosensor for Prostate-Specific Antigen

Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO₄/g-C₃N₄ nanostructures in the presence of NaBH₄

Construction of Bi₂Fe₄O₉/red phosphorus heterojunction for rapid and efficient photo‐reduction of Cr(VI)

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One-pot fabrication of BiPO4/Bi2S3 hybrid structures for visible-light driven reduction of hazardous Cr(VI)

Cited by 76 publications

References 65 publications

WITHDRAWN: Zn(II) Metal-organic Framework Nanoparticles: Synthesis, Characterization and Application as Optical Biosensor for Prostate-Specific Antigen

WITHDRAWN: Zn(II) Metal-organic Framework Nanoparticles: Synthesis, Characterization and Application as Optical Biosensor for Prostate-Specific Antigen

Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO4/g-C3N4 nanostructures in the presence of NaBH4

Construction of Bi2Fe4O9/red phosphorus heterojunction for rapid and efficient photo‐reduction of Cr(VI)

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Ultrafast conversion of carcinogenic 4-nitrophenol into 4-aminophenol in the dark catalyzed by surface interaction on BiPO₄/g-C₃N₄ nanostructures in the presence of NaBH₄

Construction of Bi₂Fe₄O₉/red phosphorus heterojunction for rapid and efficient photo‐reduction of Cr(VI)