Nitrogen-doped mixed-phase TiO2 with controllable phase junction as superior visible-light photocatalyst for selective oxidation of cyclohexane

Xu, Guangqing; Zhang, Ying; Peng, Dandan; Sheng, Donghai; Tian, Ye; Ma, Di; Zhang, Yao

doi:10.1016/j.apsusc.2020.147953

Cited by 47 publications

(11 citation statements)

References 72 publications

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“…From the above works, a follow-up experiment to monitor the removal of The results are also consistent with the literature (Zhong et al, 2015;Xu et al, 2022Xu et al, , 2021…”

Section: Photocatalytic Degradation Mechanism Of Cyclohexanesupporting

confidence: 89%

Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

et al. 2022

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“…From the above works, a follow-up experiment to monitor the removal of The results are also consistent with the literature (Zhong et al, 2015;Xu et al, 2022Xu et al, , 2021…”

Section: Photocatalytic Degradation Mechanism Of Cyclohexanesupporting

confidence: 89%

Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

et al. 2022

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“…TiO 2 with doping nonmetal elements is an efficient approach to reduce its band gap. Notably, N-doped TiO 2 has received extensive attention. − Zeng et al observed that the prepared N-doped TiO 2 nanoparticles achieved high photodegradation activities of benzene under visible-light illumination . N-doping in TiO 2 triggered fast charge separation, strong light-harvesting, and a surface electron scavenger to obtain high photocatalysis activity.…”

Section: Introductionmentioning

confidence: 73%

“…Henríquez et al also reported that N-doped TiO 2 as a visible-light photocatalyst accomplished high selectivity to a ketone for CHA oxidation . More recently, Xu et al observed that high photocatalysis activity and selectivity of CHA-one were achieved using N-doped TiO 2 photocatalysts of anatase/rutile mixed-phase included carbonaceous species in tetrachloromethane solvent system . In our previous work, the B and N-doped TiO 2 photocatalysts were also found to promote photocatalytic performance for CHA oxidation to CHA-one, especially for N-doped TiO 2 …”

Section: Introductionmentioning

confidence: 99%

Construction of Indium Oxide/N-Doped Titanium Dioxide Hybrid Photocatalysts for Efficient and Selective Oxidation of Cyclohexane to Cyclohexanone

et al. 2021

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Photocatalytic oxidation of cyclohexane (CHA) to generate cyclohexanone (CHA-one) is one of the most important strategic links for the production of nylon-6 and nylon-66. Herein, an indium oxide/N-doped titanium dioxide (In2O3/N-TiO2) hybrid photocatalyst with a p–n heterointerface was successfully constructed by a two-step strategy of the hydrothermal N-doped method and impregnation method with structural reconstruction. Under green and mild reaction conditions (room temperature, atmospheric pressure, and solvent-free), the In2O3/N-TiO2 hybrid catalyst achieved the desired photocatalytic performance for the production of CHA-one at simulated solar light. Compared with bare TiO2, the 5% In2O3/N-TiO2 composite achieved a 4-fold increase for producing CHA-one in catalytic activity and an increase in selectivity to the CHA-one of approximately 90%. Moreover, the In2O3/N-TiO2 composites exhibited a desirable cycling durability and recoverability. According to the photoelectrochemical tests and density functional theory (DFT) calculations, the enhanced photocatalytic performance of In2O3/N-TiO2 can be attributed to high visible-light absorption derived from N-doping and fast separation of photoformed electron–hole pairs caused by the p–n heterointerface. A possible photo-oxidation mechanism of CHA over the In2O3/N-TiO2 catalyst was proposed and verified by the trapping detection of active species. Thereby, the present approach provides a green and prospective strategy for extending the application of the TiO2-based photocatalyst for selective photo-oxidation.

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“…Singha et al [67] synthesized N-doped yellow TiO 2 hollow spheres using aqueous titanium peroxocarbonate complex solution as a precursor and NH 4 OH and used them to promote the synthesis of active esters of N-hydroxyimide and alcohol through simultaneous selective oxidation of alcohol to aldehyde, followed by cross-dehydrogenative coupling via visible light illumination under ambient conditions. Xu et al [127] fabricated N-doped anatase/rutile mixed-phase TiO 2 photocatalysts with carbonaceous species by pyrolyzing MIL-125 (Ti) and P25 composites as the precursor and subsequently doping N into the pyrolysis product using urea as the dopant. In this study, the photocatalysts showed excellent performances of photocatalytic cyclohexane oxidation under visible light illumination.…”

Section: Organic Transformationmentioning

confidence: 99%

Visible Light-Responsive N-Doped TiO2 Photocatalysis: Synthesis, Characterizations, and Applications

Lian

Zhang

2021

Trans. Tianjin Univ.

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Photocatalysis based on semiconductors has recently been receiving considerable research interest because of its extensive applications in environmental remediation and renewable energy generation. Various semiconductor-based materials that are vital to solar energy utilization have been extensively investigated, among which titanium oxide (TiO2) has attracted considerable attention because of its exceptional physicochemical characteristics. However, the sluggish responsiveness to visible light in the solar spectrum and the inefficient separation of photoinduced electron–hole pairs hamper the practical application of TiO2 materials. To overcome the aforementioned serious drawbacks of TiO2, numerous strategies, such as doping with foreign atoms, particularly nitrogen (N), have been improved in the past few decades. This review aims to provide a comprehensive update and description of the recent developments of N-doped TiO2 materials for visible light-responsive photocatalysis, such as (1) the preparation of N-doped/co-doped TiO2 photocatalysts and (2) mechanistic studies on the reasons for visible light response. Furthermore, the most recent and significant advances in the field of solar energy applications of modified N-doped TiO2 are summarized. The analysis indicated the critical need for further development of these types of materials for the solar-to-energy conversion, particularly for water splitting purposes.

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Nitrogen-doped mixed-phase TiO2 with controllable phase junction as superior visible-light photocatalyst for selective oxidation of cyclohexane

Cited by 47 publications

References 72 publications

Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

Construction of Indium Oxide/N-Doped Titanium Dioxide Hybrid Photocatalysts for Efficient and Selective Oxidation of Cyclohexane to Cyclohexanone

Visible Light-Responsive N-Doped TiO2 Photocatalysis: Synthesis, Characterizations, and Applications

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