Preparation and visible-light driven photocatalytic activity of the rGO/TiO2/BiOI heterostructure for methyl orange degradation

Jin, Yuhan; Li, Chunmei; Zhang, Yanfeng

doi:10.1016/s1872-5805(20)60496-6

Cited by 27 publications

(7 citation statements)

References 16 publications

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“…The characteristic peaks at 284.85 eV, 284.8 eV, and 284.8 eV correspond to C–O bonds, and the characteristic peaks at 288.3 eV, 288 eV, and 288.15 eV correspond to CO bonds. 45 Fig. 4(e) shows the Au 4f XPS spectrum.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Au-RGO/TiO₂ nanotubes and study on the photocatalytic degradation of ciprofloxacin

Zuo

Tan

et al. 2023

Anal. Methods

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Section: Resultsmentioning

confidence: 99%

Preparation of Au-RGO/TiO₂ nanotubes and study on the photocatalytic degradation of ciprofloxacin

Zuo

Tan

et al. 2023

Anal. Methods

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“…The efficiency of the prepared composite (AC-TiO 2 ) was compared with other reported carbon-modified TiO 2 based photocatalysts [ 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ] ( Table 2 ). The data were compared under different optimization conditions, and the comparison study gave the efficiency of the materials at specific reaction conditions.…”

Section: Resultsmentioning

confidence: 99%

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

et al. 2022

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The design and development of novel photocatalysts for treating toxic substances such as industrial waste, dyes, pesticides, and pharmaceutical wastes remain a challenging task even today. To this end, a biowaste pistachio-shell-derived activated carbon (AC) loaded TiO2 (AC-TiO2) nanocomposite was fabricated and effectively utilized towards the photocatalytic degradation of toxic azo dye Reactive Red 120 (RR 120) and ofloxacin (OFL) under UV-A light. The synthesized materials were characterized for their structural and surface morphology features through various spectroscopic and microscopic techniques, including high-resolution transmission electron microscope (HR-TEM), field emission scanning electron microscope (FE-SEM) along with energy dispersive spectra (EDS), diffuse reflectance spectra (DRS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, photoluminescence spectra (PL) and BET surface area measurements. AC-TiO2 shows enhanced photocatalytic activity compared to bare TiO2 due to the change in the bandgap energy and effective charge separation. The degradation rate of dyes was affected by the bandgap of the semiconductor, which was the result of the deposition weight percentage of AC onto the TiO2. The presence of AC influences the photocatalytic activity of AC-TiO2 composite towards RR 120 and OFL degradation. The presence of heteroatoms-enriched AC enhances the charge mobility and suppresses the electron-hole recombination in AC-TiO2 composite, which enhances the photocatalytic activity of the composite. The hybrid material AC-TiO2 composite displayed a higher photocatalytic activity against Reactive Red 120 and ofloxacin. The stability of the AC-TiO2 was tested against RR 120 dye degradation with multiple runs. GC-MS analyzed the degradation intermediates, and a suitable degradation pathway was also proposed. These results demonstrate that AC-TiO2 composite could be effectively used as an ecofriendly, cost-effective, stable, and highly efficient photocatalyst.

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“…With the continuous addition of BiOI, Bi and I peaks appeared, and the peaks of Bi and I gradually increased. The characteristics of Bi + in BiOI can be observed in the detailed XPS spectrograms of Bi 4F ( Figure 7 b), namely the Bi 4F 7/2 peak near 158.9 eV and the Bi 4F 5/2 peak near 164.3 eV [ 39 ]. In Figure 7 c, the peaks of I 3d 5/2 and I 3d 3/2 binding energies are located around 618.7 eV and 630.2 eV, respectively, which also obviously reflects that I − is from BiOI [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

Improvement of Photocatalytic Performance by Building Multiple Heterojunction Structures of Anatase–Rutile/BiOI Composite Fibers

Li¹,

Xu²,

Zhang³

2022

Nanomaterials

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In this study, multiple heterojunction structures of anatase–rutile/Bismuth oxyiodide (BiOI) composite fibers are designed by the combined method of electrospinning and hydrothermal techniques. The influence of different Ti/Bi atomic ratios ([Ti/Bi]) on the nanostructures and photocatalytic properties are investigated. It is found that the morphology of BiOI covered on the TiO2 fiber surface changed with [Ti/Bi] from nanosheets to submicron spheres structures. Additionally, the crystallization of the composite fibers including the phases of anatase, rutile, and BiOI is identified, theses phases are in close contact with each other, and the interfacial effects are helpful to form the multiple heterojunctions which lead to blue shifts on the chemical state of Ti. The absorption of visible light has been improved by compositing BiOI on TiO2, while the band gap values of the composite fibers are significantly reduced, which can enhance the generation and separation of electrons and holes. For the case of [Ti/Bi] = 1.57, the photodegradation rate of anatase–rutile/BiOI composite fibers is about 12 times that of pure TiO2. For the photocatalytic mechanism, the synergistic s-type heterojunctions increase the content of active oxides which have a positive effect on the degradation rate.

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Preparation and visible-light driven photocatalytic activity of the rGO/TiO2/BiOI heterostructure for methyl orange degradation

Cited by 27 publications

References 16 publications

Preparation of Au-RGO/TiO₂ nanotubes and study on the photocatalytic degradation of ciprofloxacin

Preparation of Au-RGO/TiO₂ nanotubes and study on the photocatalytic degradation of ciprofloxacin

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

Improvement of Photocatalytic Performance by Building Multiple Heterojunction Structures of Anatase–Rutile/BiOI Composite Fibers

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Preparation and visible-light driven photocatalytic activity of the rGO/TiO2/BiOI heterostructure for methyl orange degradation

Cited by 27 publications

References 16 publications

Preparation of Au-RGO/TiO2 nanotubes and study on the photocatalytic degradation of ciprofloxacin

Preparation of Au-RGO/TiO2 nanotubes and study on the photocatalytic degradation of ciprofloxacin

Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin

Improvement of Photocatalytic Performance by Building Multiple Heterojunction Structures of Anatase–Rutile/BiOI Composite Fibers

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Product

Resources

About

Preparation of Au-RGO/TiO₂ nanotubes and study on the photocatalytic degradation of ciprofloxacin

Preparation of Au-RGO/TiO₂ nanotubes and study on the photocatalytic degradation of ciprofloxacin