Effect of g-C3N4 loading on TiO2/Bentonite nanocomposites for efficient heterogeneous photocatalytic degradation of industrial dye under visible light

Mishra, Amit; Mehta, Akansha; Kainth, Shagun; Basu, Soumen

doi:10.1016/j.jallcom.2018.06.089

Cited by 83 publications

(18 citation statements)

References 37 publications

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“…Figure 4 is the UV-Vis DRS and the band gaps of g-C 3 N 4 , TiO 2 /hectorite and g-C 3 N 4 /TiO 2 /hectorite. The band gaps were calculated by the equation (Equation (1)):

where α , h , ν , A and E g are the optical absorption coefficient, Planck constant, photon frequency, a constant and band gap, respectively [ 38 ]. Figure 4 shows that the light absorption ability of hectorite is weak from 200 to 800 nm wavelength range, which might be due its component and small particle size.…”

Section: Resultsmentioning

confidence: 99%

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Facile Synthesis of g-C3N4/TiO2/Hectorite Z-Scheme Composite and Its Visible Photocatalytic Degradation of Rhodamine B

et al. 2020

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A novel g-C3N4/TiO2/hectorite Z-scheme composites with oxygen vacancy (Vo) defects and Ti3+ were synthesized by so-gel method and high temperature solid phase reaction. This composite exhibited high visible photo-catalytic degradation of rhodamine B (RhB). The apparent rate constant of g-C3N4/TiO2/hectorite was 0.01705 min−1, which is approximately 5.38 and 4.88 times that of P25 and g-C3N4, respectively. The enhancement of photo-catalytic efficiency of the composites can be attributed to the great light harvesting ability, high specific surface area and effective separation of electrons(e−) and holes(h+). The F element from Hectorite causes the formation of Vo and Ti3+ in TiO2, making it responsive to visible light. The effective separation of e− and h+ mainly results from Z-scheme transfer of photo-produced electrons in g-C3N4/TiO2 interface. The composites can be easily recycled and the degradation rate of the RhB still reached 84% after five cycles, indicating its good reusability.

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“…Figure 4 is the UV-Vis DRS and the band gaps of g-C 3 N 4 , TiO 2 /hectorite and g-C 3 N 4 /TiO 2 /hectorite. The band gaps were calculated by the equation (Equation (1)):

Section: Resultsmentioning

confidence: 99%

“…where α, h, ν, A and E g are the optical absorption coefficient, Planck constant, photon frequency, a constant and band gap, respectively [38]. Figure 4 shows that the light absorption ability of hectorite is weak from 200 to 800 nm wavelength range, which might be due its component and small particle size.…”

Section: N 2 Adsorption-desorption Isothermsmentioning

confidence: 99%

Facile Synthesis of g-C3N4/TiO2/Hectorite Z-Scheme Composite and Its Visible Photocatalytic Degradation of Rhodamine B

et al. 2020

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“…It was also clear that the presence of TiO2 in the prepared material significantly enhanced the crystallinity of the PAC. Moreover, one diffraction peaks appearing at 37.72° and 54.96° were due to the formation of rutile TiO2 on the PAC surface, while two other intense peaks of anatase TiO2 appear at 25.16° and 47.72° [34,35]. It should be noted that some miscellaneous peaks were observed in the tetragonal structure of (101) and (200) due to the high concentrations of Si in the PAC ash.…”

Section: Ftir Analysismentioning

confidence: 93%

TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water

Xia-zhen

Zang

et al. 2021

Water

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2-methylisoborneol (2-MIB) is a common taste and odor compound caused by off-flavor secondary metabolites, which represents one of the greatest challenges for drinking water utilities worldwide. A TiO2-coated activated carbon (TiO2/PAC) has been synthesized using the sol-gel method. A new TiO2/PAC photocatalyst has been successfully employed in photodegradation of 2-MIB under UV light irradiation. In addition, the combined results of XRD, SEM-EDX, FTIR and UV-Vis suggested that the nano-TiO2 had been successfully loaded on the surface of PAC. Experimental results of 2-MIB removal indicated that the adsorption capacities of PAC for 2-MIB were higher than that of TiO2/PAC. However, in the natural organic matter (NOM) bearing water, the removal efficiency of 2-MIB by TiO2/PAC and PAC were 97.8% and 65.4%, respectively, under UV light irradiation. Moreover, it was shown that the presence of NOMs had a distinct effect on the removal of MIB by TiO2/PAC and PAC. In addition, a simplified equivalent background compound (SEBC) model could not only be used to describe the competitive adsorption of MIB and NOM, but also represent the photocatalytic process. In comparison to other related studies, there are a few novel composite photocatalysts that could efficiently and rapidly remove MIB by the combination of adsorption and photocatalysis.

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“…In order to solve the problem of catalyst recycling and reuse, many researchers have used different substances as carriers to support TiO 2 to synthesize TiO 2 loaded composites, such as activated carbon, glass ber and carbon ber. [28][29][30] Basalt ber (BF) is made of pure natural basalt ore as the raw material and its main component is SiO 2 , which has a similar structure to TiO 2 . Therefore, BF, which has similar mineral properties to TiO 2 , could adhere to TiO 2 rmly.…”

Section: Introductionmentioning

confidence: 99%

N/Fe/Zn co-doped TiO₂ loaded on basalt fiber with enhanced photocatalytic activity for organic pollutant degradation

Yang

et al. 2021

RSC Adv.

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Effect of g-C3N4 loading on TiO2/Bentonite nanocomposites for efficient heterogeneous photocatalytic degradation of industrial dye under visible light

Cited by 83 publications

References 37 publications

Facile Synthesis of g-C3N4/TiO2/Hectorite Z-Scheme Composite and Its Visible Photocatalytic Degradation of Rhodamine B

Facile Synthesis of g-C3N4/TiO2/Hectorite Z-Scheme Composite and Its Visible Photocatalytic Degradation of Rhodamine B

TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water

N/Fe/Zn co-doped TiO₂ loaded on basalt fiber with enhanced photocatalytic activity for organic pollutant degradation

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Effect of g-C3N4 loading on TiO2/Bentonite nanocomposites for efficient heterogeneous photocatalytic degradation of industrial dye under visible light

Cited by 83 publications

References 37 publications

Facile Synthesis of g-C3N4/TiO2/Hectorite Z-Scheme Composite and Its Visible Photocatalytic Degradation of Rhodamine B

Facile Synthesis of g-C3N4/TiO2/Hectorite Z-Scheme Composite and Its Visible Photocatalytic Degradation of Rhodamine B

TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water

N/Fe/Zn co-doped TiO2 loaded on basalt fiber with enhanced photocatalytic activity for organic pollutant degradation

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Product

Resources

About

N/Fe/Zn co-doped TiO₂ loaded on basalt fiber with enhanced photocatalytic activity for organic pollutant degradation