In-situ establishment of binary composites α-Fe2O3/Bi12O17Cl2 with both photocatalytic and photo-Fenton features

Chang, Fei; Wu, Feiyan; Zheng, Jiaojiao; Cheng, Wenbo; Yan, Wenming; Deng, Baoqing; Hu, Xuefeng

doi:10.1016/j.chemosphere.2018.07.010

Cited by 56 publications

(11 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A total conversion of p-HBZ is achieved after 20 min for H2O2/p-HBZ molar ratios of 15 and 20. This result could be attributed to the presence of more • OH radicals on the surface of 3Fe/CeTi-C, which is in accordance with previous studies (Chang et al 2018). However, when the H2O2/p-HBZ molar ratio is 25, the degradation efficiency is decreased to 78%.…”

Section: Effect Of H2o2/p-hbz Molar Ratiosupporting

confidence: 91%

Heterogeneous Fenton-like oxidation of p-hydroxybenzoic acid using Fe/CeO2-TiO2 catalyst

Hammedi

Triki

Álvarez

et al. 2019

Water Science and Technology

View full text Add to dashboard Cite

This paper is built on the Fenton-like oxidation of p-hydroxybenzoic acid (p–HBZ) in the presence of H2O2 and 3%Fe supported on CeO2-TiO2 aerogels under mild conditions. These catalysts were deeply characterized by X-ray diffraction (XRD), hydrogen temperature programmed reduction (H2-TPR), transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM) and X-ray photoelectron spectroscopy (XPS). The effect of thermal treatment, pH (2–3, 5, 7), H2O2/p–HBZ molar ratio (5, 15, 20, 25) and reaction temperature (25 °C, 40 °C and 60 °C) on the catalytic properties of supported Fe catalysts are studied. Our results highlight the role of CeO2 and the calcination of the catalyst to obtain the highest catalytic properties after 10 min: 73% of p–HBZ conversion and 52% of total organic carbon (TOC) abatement.

show abstract

Section: Effect Of H2o2/p-hbz Molar Ratiosupporting

confidence: 91%

Heterogeneous Fenton-like oxidation of p-hydroxybenzoic acid using Fe/CeO2-TiO2 catalyst

Hammedi

Triki

Álvarez

et al. 2019

Water Science and Technology

View full text Add to dashboard Cite

show abstract

“…Hydroxyl radicals (·OH) are generated due to the presence of iron ions and hydrogen peroxide. The ·OH radicals together with the H + and ·O 2 − play the role of degradation of the methylene blue dye when coupled as H + + ·O 2 − and H + + (·OH) [61].…”

Section: Degradation Of Methylene Bluementioning

confidence: 99%

“…The intermediates iron produced such as Fe 2+ , Fe 3+ , their hydroxides are thermodynamically unstable and much active. These also contributes to the catalytic activity [61][62][63][64][65]. Therefore, the radicals react with methylene blue resulting in dye degradation [34,50,60].…”

Section: Degradation Of Methylene Bluementioning

confidence: 99%

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

et al. 2019

View full text Add to dashboard Cite

Green synthesized metallic nanoparticles are environmentally friendly, bio-compatible, and highly stable. The aim of this study was to synthesize iron nanoparticles (FeNPs) from FeCl 3 solution using aqueous leaf extracts of Galinsoga parviflora (Gp), Conyza bonariensis (Cb) and Bidens pilosa (Bp) and use them in degradation of methylene blue dye. The iron nanoparticles were characterized using UV-Vis spectrophotometer, FT-IR spectrophotometer, X-ray Fluorescence (EDXRF), X-ray diffractometer (XRD), and scanning electron microscope (SEM). Phytochemical screening for presence of secondary metabolites revealed presence of phenolics, phytosterols and flavonoids. The total phenolic and flavonoid content in Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts were 57.67 ± 1.27, 117.13 ± 0.03, 126.27 ± 0.013 mg Gallic Equivalent/g of Dry Weight (mg GAE/g DW) and 39.00 ± 0.56, 45.50 ± 0.59, 33.13 ± 0.81 mg Rutin Equivalent/g of Dry Weight (mg RE/g DW) respectively. The UV-Vis spectrum of FeCl 3 had a shoulder at 320 nm, which disappeared upon addition of G. parviflora, C. bonariensis and B. pilosa extracts confirming formation of iron nanoparticles. Evaluation of iron content of the synthesized nanoparticles revealed that the iron content in G. parviflora, C. bonariensis and B. pilosa extracts was 51, 47 and 44% respectively. XRD data revealed presence of a large amorphous coating that masked iron peaks, though 2 theta values observed have been reported to be of iron oxides. Methylene blue degradation studies revealed that CbNPs, BpNPs and GpNPs synthesized were good biocatalysts as they degraded the dye by 86, 84.3 and 92% respectively. Therefore, green synthesized iron nanoparticles is cost effective and environmentally safe in providing insight in the environmental removal of dyes.

show abstract

“…Since the separation and transport rate of electron-hole pairs of a semiconductor are closely related to the fluorescence emission [29,[43][44][45], the photoluminescence (PL) technique was applied to study the transport behaviors of charge carriers in Bi 2 MoO 6 and 1.0CdS/Bi 2 MoO 6 ( Figure S3). Through comparing the PL emission spectra of Bi 2 MoO 6 and 1.0CdS/Bi 2 MoO 6 ( Figure S3), it is found that 1.0CdS/Bi 2 MoO 6 exhibits much lower fluorescence intensity compared to that of pure Bi 2 MoO 6 , indicating that the nano-junction between Bi 2 MoO 6 and CdS greatly promotes the separation of electron-hole pairs.…”

Section: Photocatalytic Reaction Mechanismmentioning

confidence: 99%

Facile Synthesis of Bi2MoO6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic

Liu

Long

et al. 2018

Catalysts

View full text Add to dashboard Cite

Developing high-efficiency and stable visible-light-driven (VLD) photocatalysts for removal of toxic antibiotics is still a huge challenge at present. Herein, a novel CdS/Bi2MoO6 heterojunction with CdS nanoparticles decorated Bi2MoO6 microspheres has been obtained by a simple solvothermal-precipitation-calcination method. 1.0CdS/Bi2MoO6 has stronger light absorption ability and highest photocatalytic activity with levofloxacin (LEV) degradation efficiency improving 6.2 or 12.6 times compared to pristine CdS or Bi2MoO6. CdS/Bi2MoO6 is very stable during cycling tests, and no appreciable activity decline and microstructural changes are observed. Results signify that the introduction of CdS could enhance the light absorption ability and dramatically boost the separation of charge carriers, leading to the excellent photocatalytic performance of the heterojunction. This work demonstrates that flower-like CdS/ Bi2MoO6 is an excellent photocatalyst for the efficient removal of the LEV antibiotic.

show abstract

In-situ establishment of binary composites α-Fe2O3/Bi12O17Cl2 with both photocatalytic and photo-Fenton features

Cited by 56 publications

References 46 publications

Heterogeneous Fenton-like oxidation of p-hydroxybenzoic acid using Fe/CeO2-TiO2 catalyst

Heterogeneous Fenton-like oxidation of p-hydroxybenzoic acid using Fe/CeO2-TiO2 catalyst

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

Facile Synthesis of Bi2MoO6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic

Contact Info

Product

Resources

About