Fabrication of an efficient ternary TiO2/Bi2WO6 nanocomposite supported on g-C3N4 with enhanced visible-light- photocatalytic activity: Modeling and systematic optimization procedure

Mirhosseini, Hadiseh; Mostafavi, Ali; Shamspur, Tayebeh; Sargazi, Ghasem

doi:10.1016/j.arabjc.2022.103729

Cited by 15 publications

(4 citation statements)

References 62 publications

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“…21-1276) standard card [ 28 ]. The characteristic peaks at 2θ = 13.1°and 27.5° belonged to the (100) and (002) planes, respectively which was largely in line with g-C 3 N 4 (JCPDS87-1526) [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation of a Z-Type g-C3N4/(A-R)TiO2 Composite Catalyst and Its Mechanism for Degradation of Gaseous and Liquid Ammonia

Zhu

Liu

Wang

et al. 2022

IJMS

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In this study, an (A-R)TiO2 catalyst (ART) was prepared via the sol–gel method, and g-C3N4 (CN) was used as an amendment to prepare the g-C3N4/(A-R)TiO2 composite catalyst (ARTCN). X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, N2 adsorption–desorption curves (BET), UV–vis diffuse absorption spectroscopy (UV–vis DRS), and fluorescence spectroscopy (PL) were used to evaluate the structure, morphology, specific surface area, optical properties, and photocarrier separation ability of the catalysts. The results showed that when the modifier CN content was 0.5 g, the dispersion of the ARTCN composite catalyst was better, with stronger light absorption performance, and the forbidden band width was smaller. Moreover, the photogenerated electrons in the conduction band of ART transferred to the valence band of CN and combined with the holes in the valence band of CN, forming Z-type heterostructures that significantly improved the efficiency of the photogenerated electron-hole migration and separation, thus increasing the reaction rate. Gaseous and liquid ammonia were used as the target pollutants to investigate the activity of the prepared catalysts, and the results showed that the air wetness and initial concentration of ammonia had a great influence on the degradation of gaseous ammonia. When the initial concentration of ammonia was 50 mg/m3 and the flow rate of the moist air was 0.9 mL/min, the degradation rate of gaseous ammonia by ARTCN-0.5 reached 88.86%, and it had good repeatability. When the catalytic dose was 50 mg and the initial concentration of NH4+ was 100 mg/L, the degradation rate of liquid ammonia by ARTCN-0.5 was 71.60% after 3 h of reaction, and small amounts of NO3− and NO2− were generated. The superoxide anion radical (·O2−) and hydroxyl radical (·OH) were the main active components in the photocatalytic reaction process.

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Section: Resultsmentioning

confidence: 99%

Preparation of a Z-Type g-C3N4/(A-R)TiO2 Composite Catalyst and Its Mechanism for Degradation of Gaseous and Liquid Ammonia

Zhu

Liu

Wang

et al. 2022

IJMS

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“…XPS (Figure 2) confirmed the existence of Cu, S, O, Bi, W, composition and valence band structure of CuS/MoS2/Bi2WO6spectrum of Bi (Figure 2A) exhibited two distinct peaks for elec at 158.8 and 164.2 eV under the distributions on Bi 4f7/2 and Bi 4f the spectra for O 1 s which is resolved into peak positions captu corresponding to the lattice oxygen in the microstructure and from the atmosphere, respectively [32]. The distinctive peaks at 3 4f7/2 and W 4f5/2 (Figure 2C) were due to the presence of W a state [33]. Figure 2D matches Mo 3d3/2 at 231.6 eV and Mo 3d5 [34].…”

Section: Physical Characterizationmentioning

confidence: 95%

“…Figure 2B depicts the spectra for O 1 s which is resolved into peak positions captured at 529.2 and 530.9 eV corresponding to the lattice oxygen in the microstructure and surface-adsorbed oxygen from the atmosphere, respectively [32]. The distinctive peaks at 34.9 eV and 36.9 eV for W 4f7/2 and W 4f5/2 (Figure 2C) were due to the presence of W atoms in the +6 oxidation state [33]. Figure 2D matches Mo 3d3/2 at 231.6 eV and Mo 3d5/2 at 228.4 eV with Mo 4+ [34].…”

Section: Physical Characterizationmentioning

confidence: 99%

A Visible-Light-Active CuS/MoS2/Bi2WO6 Aptamer Sensitively Detects the Non-Steroidal Anti-Inflammatory Drug Diclofenac

Gao

Liu

2022

Nanomaterials

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Diclofenac is a non-steroidal, anti-inflammatory drug and is clinically used for the treatment of osteoarthritis, non-articular rheumatism, etc. This research aimed to demonstrate the creation of an upgraded photoelectrochemical (PEC) aptamer sensor for detecting diclofenac (DCF) with high sensitivity. In this work, photoactive materials and bio-identification components served as visible-light-active CuS/MoS2/Bi2WO6 heterostructures and aptamers, respectively. CuS and MoS2/Bi2WO6 were combined to improve photocurrent responsiveness, which helped the structure of PEC aptasensors. Additionally, the one-pot synthesis of CuS/MoS2/Bi2WO6 was ecologically beneficial. With these optimizations, the photocurrent response of aptamer/CS/CuS/MoS2/Bi2WO6 exhibited linearity between 0.1 and 500 nM DCF. The detection limit was 0.03 nM (S/N = 3). These results suggest that the PEC sensing technique might produce an ultra-sensitive sensor with high selectivity and stability for DCF detection.

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“…In this context, Modwi et al 18 studied mesoporous MgO/g-C 3 N 4 composite adsorbent for the removal of Congo Red and Basic Fuchsin dye and achieved 96% and 99% removal, respectively, in 24 h using 50 ppm dye concentration 0.4 g L À1 adsorbent dose. Mirhosseini et al 19 reported the synthesis of g-C 3 N 4 /ZnV 2 O 4 and its application in Crystal Violet removal, which showed 99.67% removal in 60 min using 20 ppm dye concentration and 0.8 g L À1 adsorbent dose. Meng et al 20 applied Na and Fe co-doped g-C 3 N 4 adsorbent and achieved 94.7% removal in 30 min for methylene blue dye for a 25 ppm, 50 mL solution with 0.01 g L À1 adsorbent dosing.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of embedded g-C₃N₄/MoS₂ nano-adsorbent for the removal of persistent rhodamine B contaminant in aqueous solution

Adak,

Ghosh Chaudhuri,

Mandal

2024

New J. Chem.

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Fabrication of an efficient ternary TiO2/Bi2WO6 nanocomposite supported on g-C3N4 with enhanced visible-light- photocatalytic activity: Modeling and systematic optimization procedure

Cited by 15 publications

References 62 publications

Preparation of a Z-Type g-C3N4/(A-R)TiO2 Composite Catalyst and Its Mechanism for Degradation of Gaseous and Liquid Ammonia

Preparation of a Z-Type g-C3N4/(A-R)TiO2 Composite Catalyst and Its Mechanism for Degradation of Gaseous and Liquid Ammonia

A Visible-Light-Active CuS/MoS2/Bi2WO6 Aptamer Sensitively Detects the Non-Steroidal Anti-Inflammatory Drug Diclofenac

Facile fabrication of embedded g-C₃N₄/MoS₂ nano-adsorbent for the removal of persistent rhodamine B contaminant in aqueous solution

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Fabrication of an efficient ternary TiO2/Bi2WO6 nanocomposite supported on g-C3N4 with enhanced visible-light- photocatalytic activity: Modeling and systematic optimization procedure

Cited by 15 publications

References 62 publications

Preparation of a Z-Type g-C3N4/(A-R)TiO2 Composite Catalyst and Its Mechanism for Degradation of Gaseous and Liquid Ammonia

Preparation of a Z-Type g-C3N4/(A-R)TiO2 Composite Catalyst and Its Mechanism for Degradation of Gaseous and Liquid Ammonia

A Visible-Light-Active CuS/MoS2/Bi2WO6 Aptamer Sensitively Detects the Non-Steroidal Anti-Inflammatory Drug Diclofenac

Facile fabrication of embedded g-C3N4/MoS2 nano-adsorbent for the removal of persistent rhodamine B contaminant in aqueous solution

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Facile fabrication of embedded g-C₃N₄/MoS₂ nano-adsorbent for the removal of persistent rhodamine B contaminant in aqueous solution