Enhanced photocatalytic activity towards degradation and H2 evolution over one dimensional TiO2@MWCNTs heterojunction

Xiao, Zhang; Cao, Shuang; Wu, Zhijiao; Zhao, Suling; Piao, Lingyu

doi:10.1016/j.apsusc.2017.01.096

Cited by 40 publications

(19 citation statements)

References 62 publications

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“…[42] This is due to the presence of CNTsi nt he composite, which increase the quantity of holes that react with water moleculest o produce COH. [46] show that the efficiency of TiO 2 /MWCNTsi nt he photocatalytic degradationo fM Bi s3a nd 6.7 times highert han that of bareT iO 2 under UV and visible light, respectively.Z hang et al describe the use of TiO 2 @MWCNT hybridsw ith different MWCNT contentsa sp hotocatalystsf or the decomposition of organic dyes (i.e.,M Ba nd RhB) [44] (Figure 3). All these effects lead to the enhanced ability for efficient photocatalysis under visible light.…”

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 98%

“…[43] Chaudharye tal. [46] show that the efficiency of TiO 2 /MWCNTsi nt he photocatalytic degradationo fM Bi s3a nd 6.7 times highert han that of bareT iO 2 under UV and visible light, respectively.Z hang et al describe the use of TiO 2 @MWCNT hybridsw ith different MWCNT contentsa sp hotocatalystsf or the decomposition of organic dyes (i.e.,M Ba nd RhB) [44] (Figure 3). The decomposition of MB and RhB under UV-light illumination is 4.9 and 25.7 times higher, respectively, in the presence of the composite consisting of 44 %M WCNTs than in the presence of pristine TiO 2 .Z hang et al [45] outline the synthesis of a3Du rchin-like TiO 2Àx /CNT structured materialb y as imple one-pot solvothermal route (Figure 4a,b).…”

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 98%

“…[40][41][42][43][44][45][46][47] Among the reports, the photocatalytic degradation of 4-chlorophenol, [41] nitrobenzene, [42] and benzene; [43] the photocatalytic degradationo fd yes such as methylene blue (MB), [43,44,46] methyl orange (MO), [45] and RhB; [44,47] and photocatalytic hydrogen evolution [44,45] have been described. [40][41][42][43][44][45][46][47] Among the reports, the photocatalytic degradation of 4-chlorophenol, [41] nitrobenzene, [42] and benzene; [43] the photocatalytic degradationo fd yes such as methylene blue (MB), [43,44,46] methyl orange (MO), [45] and RhB; [44,47] and photocatalytic hydrogen evolution [44,45] have been described.…”

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 99%

“…CNTs, both single-walled( SWCNTs) and multi-walled (MWCNTs) carbonn anotubes, are widely used as nanoadditives to increaset he photocatalytic properties of TiO 2 . [40][41][42][43][44][45][46][47] Among the reports, the photocatalytic degradation of 4-chlorophenol, [41] nitrobenzene, [42] and benzene; [43] the photocatalytic degradationo fd yes such as methylene blue (MB), [43,44,46] methyl orange (MO), [45] and RhB; [44,47] and photocatalytic hydrogen evolution [44,45] have been described.…”

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 99%

“…TEM images of TiO 2 @MWCNTsatd ifferent magnifications. Reprinted from Ref [44]. with permission from Elsevier.…”

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confidence: 99%

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Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

et al. 2018

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Enhancing the photocatalytic performance of graphitic carbon nitride (g-C N , GCN) and titanium dioxide (TiO ) has played a key role in the energy and environmental protection research community. Therefore, it is necessary to explore the synergy of both materials with carbon nanostructures for photocatalysis. Among the variety of carbon materials, graphene flakes and nanotubes, as nanoadditives to improve electron charge transfer and the optical absorption behavior in the visible-light region, have been widely explored. Thus, flake-like (2 D) and tubular (1 D) carbon structures in composition with GCN and/or TiO are reviewed, as are their photocatalytic response. Current trends clearly indicate that this type of molecular hybrids can be efficiently exploited in this field. This Minireview covers state-of-the-art research over the period of 2015 to 2018.

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Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 98%

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 98%

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 99%

Section: Titaniumd Ioxide/graphene/carbon Nanotubes Nanostructuresmentioning

confidence: 99%

“…TEM images of TiO 2 @MWCNTsatd ifferent magnifications. Reprinted from Ref [44]. with permission from Elsevier.…”

mentioning

confidence: 99%

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Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

et al. 2018

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Indirect Z‐scheme TiO₂/BC/g‐C₃N₄ for efficient photocatalytic reduction of Cr(VI) in aqueous solution

Chen,

Wang,

Dai

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDNowadays, there is an increasing concern regarding the rising issue of Cr(VI) pollution in aqueous solutions. It is crucial to find an effective technology for the removal of Cr(VI) in aqueous solutions. In this work, a novel TiO2/BC/g‐C3N4 heterostructure photocatalyst was successfully prepared by a simple hydrothermal method and characterized by SEM, TEM, XRD, BET, FT‐IR, PL, UV‐vis DRS, and XPS analysis. The photocatalytic reduction behavior of Cr(VI) on the TiO2/BC/g‐C3N4 heterostructure was investigated under visible light irradiation, and the possible mechanism of photocatalytic reduction of Cr(VI) was elucidated.RESULTSThe TiO2/BC/g‐C3N4 heterostructure photocatalyst exhibited better photo‐reduction activity for Cr(VI) under visible light irradiation. After 100 minutes irradiation with visible light, the TiO2/BC/g‐C3N4 photocatalyst achieved a removal efficiency of 89% for Cr(VI). Compared with TiO2, TiO2/BC, and TiO2/g‐C3N4, the photocatalytic removal efficiency of Cr(VI) on the TiO2/BC/g‐C3N4 increase by 40%, 20%, and 10% respectively. The photocatalytic reduction of Cr(VI) was depened on the initial concentration of Cr(VI), catalyst dosage, pH value, and atmosphere. Moreover, the TiO2/BC/g‐C3N4 presented excellent stability and reusability after five cycles.CONCLUSIONThe TiO2/BC/g‐C3N4 heterojunction enables highly efficient photocatalytic reduction of Cr(VI) under visible light irradiation. This enhancement is primarily attributed to the construction of an indirect Z‐scheme TiO2/BC/g‐C3N4 heterojunction, which significantly improves the separation efficiency of photo‐ generated charge carriers during the photochemical process. Furthermore, the presence of BC enhances the adsorption performance of Cr(VI) on the TiO2/BC/g‐C3N4, thereby facilitating its photocatalytic reduction.This article is protected by copyright. All rights reserved.

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Enhanced Visible‐light Photocatalytic Dye Degradation Ability of CdS/O‐CNTs Nanocomposites

et al. 2022

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The rapid developpment of industrialization and urbanization has caused extensive environmental pollution, especially water pollution. Here, a bud-like shaped CdS (cadmium sulfide), with O-CNTs (oxidized multiwalled carbon nanotubes) homogeneously embedde (BCO), were synthesized by a facile hydrothermal process. The surface properties of the composites and the photocatalytic performances were studied systematically. The photocatalytic degrading anionic dye Methyl orange (MO) and cationic dye Rhodamine B (RhB) under visible light (λ � 420 nm) unveiled that BCO nanocomposites exhibited much better photocatalytic decolorization activity than bud-like shaped CdS. Due to the delaying time of electron recombination to the hole and the participation of holes (h + ) and * superoxide radicals ( * O 2 À ) by loading O-CNTs, BCO-3 wt% could decolorize 98.5 % RhB in 30 min and 95.5 % MO in 90 min, implying potential applications prospect.

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Enhanced photocatalytic activity towards degradation and H2 evolution over one dimensional TiO2@MWCNTs heterojunction

Cited by 40 publications

References 62 publications

Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

Indirect Z‐scheme TiO₂/BC/g‐C₃N₄ for efficient photocatalytic reduction of Cr(VI) in aqueous solution

Enhanced Visible‐light Photocatalytic Dye Degradation Ability of CdS/O‐CNTs Nanocomposites

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Enhanced photocatalytic activity towards degradation and H2 evolution over one dimensional TiO2@MWCNTs heterojunction

Cited by 40 publications

References 62 publications

Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

Indirect Z‐scheme TiO2/BC/g‐C3N4 for efficient photocatalytic reduction of Cr(VI) in aqueous solution

Enhanced Visible‐light Photocatalytic Dye Degradation Ability of CdS/O‐CNTs Nanocomposites

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Indirect Z‐scheme TiO₂/BC/g‐C₃N₄ for efficient photocatalytic reduction of Cr(VI) in aqueous solution