One-pot synthesis of nitrogen-doped TiO2 nanorods with anatase/brookite structures and enhanced photocatalytic activity

Gai, Ligang; Duan, Xiuquan; Jiang, Haihui; Mei, Qinghu; Zhou, Guowei; Tian, Yan; Liu, Hong

doi:10.1039/c2ce25563d

Cited by 57 publications

(48 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Besides anatase/rutile mixtures, TiO 2 anatase/brookite mixtures have been applied for the photodegradation of organic compounds (e.g., methyl orange, rhodamine B) (Chiarello et al, 2011;Boppella et al, 2012;Gai et al, 2012;Jiao et al, 2012b;Zhao et al, 2012a), which exhibited higher activity than P25 and pure-phase anatase. Recently, bicrystalline TiO 2 with controllable anatase/brookite phase content has been used as a photocatalyst for CO 2 photoreduction with H 2 O (Zhao et al, 2013).…”

Section: Effect Of Crystal Phasementioning

confidence: 99%

“…These defects can be created by photo-excitation in the presence of a hole scavenger (Panayotov et al, 2012), thermal removal of lattice oxygen with a reducing gas Liu et al, 2013a), doping anions such as N and C (Gai et al, 2012;Hoang et al, 2012;Li et al, 2012), thermal treatment in vacuum (Xiong et al, 2012), or plasma treating (DeSario et al, 2011). The defects have been reported to play an essential role in photocatalytic degradation of organics and water splitting by TiO 2 Hoang et al, 2012;Xing et al, 2013).…”

Section: Effect Of Defect Disordersmentioning

confidence: 99%

“…It was found that doping of TiO 2 with nonmetal elements improved the visible light activity, depending on the type and the concentration of nonmetal dopants. Among the various nonmetal dopants, N-doped TiO 2 is widely used in photooxidation of organics (Lin et al, 2005;Chen and Burda, 2008;Gai et al, 2012) and in CO 2 photoreduction as well (Varghese et al, 2009;Fan et al, 2011;Zhang et al, 2011;Li et al, 2012;Zhang et al, 2012). However, the origin of the visible light activity of N-doped TiO 2 has long been debated.…”

Section: Electron Transfer From the Impurity State To Tio 2 Cbmentioning

confidence: 99%

See 2 more Smart Citations

Understanding the Reaction Mechanism of Photocatalytic Reduction of CO2 with H2O on TiO2-Based Photocatalysts: A Review

Liu

2014

Aerosol Air Qual. Res.

318

217

View full text Add to dashboard Cite

Recently, there has been an increasing interest in the research of photocatalytic reduction of CO 2 with H 2 O, an innovative way to simultaneously reduce the level of CO 2 emissions and produce renewable and sustainable fuels. Titanium dioxide (TiO 2 ) and modified TiO 2 composites are the most widely used photocatalysts in this application; however, the reaction mechanism of CO 2 photoreduction on TiO 2 photocatalysts is still not very clear, and the reaction intermediates and product selectivity are not well understood. This review aims to summarize the recent advances in the exploration of reaction mechanism of CO 2 photoreduction with H 2 O in correlation with the TiO 2 photocatalyst characteristics. Discussions are provided in the following sections: (1) CO 2 adsorption, activation and dissociation on TiO 2 photocatalyst; (2) mechanism and approaches to enhance charge transfer from photocatalyst to reactants (i.e., CO 2 and H 2 O); and (3) surface intermediates, reaction pathways, and product selectivity. In each section, the effects of material properties are discussed, including TiO 2 crystal phases (e.g., anatase, rutile, brookite, or their mixtures), surface defects (e.g., oxygen vacancy and Ti 3+) and material modifications (e.g., incorporation of noble metal, metal oxide, and/or nonmetal species to TiO 2 ). Finally, perspectives on future research directions and open issues to be addressed in CO 2 photoreduction are outlined in this review paper.

show abstract

Section: Effect Of Crystal Phasementioning

confidence: 99%

Section: Effect Of Defect Disordersmentioning

confidence: 99%

Section: Electron Transfer From the Impurity State To Tio 2 Cbmentioning

confidence: 99%

See 1 more Smart Citation

Understanding the Reaction Mechanism of Photocatalytic Reduction of CO2 with H2O on TiO2-Based Photocatalysts: A Review

Liu

2014

Aerosol Air Qual. Res.

318

217

View full text Add to dashboard Cite

show abstract

“…For example, anatase-brookite composite nanocrystals were synthesized by a sonochemical sol-gel method at very high heating temperature (500 • C) [12,18]. Highly crystalline phase-pure brookite and anatase/brookite mixed-phase TiO 2 nanostructures were synthesized via a simple hydrothermal method with titanium sulphide as the precursors in sodium hydroxide solutions [19]. Interestingly, anatase-brookite heterojunction TiO 2 photocatalysts were purposefully tailored by introducing different glycine concentrations through hydrothermal treatment at 200 • C for 20 h [20].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, N-doped anatase/rutile TiO 2 nanoparticles have been designed and synthesized [19,21]. Anatase/brookite mixed-phase nitrogen-doped TiO 2 nanoparticles were also synthesized by a facile solvothermal route [22].…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Sol-Gel Synthesis of Nitrogen-Doped Anatase/Brookite Biphasic Nanoparticles with High Surface Area and Visible-Light Performance

Jiang

Yang

et al. 2017

Catalysts

View full text Add to dashboard Cite

Nitrogen doping in combination with the brookite phase or a mixture of TiO 2 polymorphs nanomaterials can enhance photocatalytic activity under visible light. Generally, nitrogendopedanatase/brookite mixed phases TiO 2 nanoparticles obtained by hydrothermal or solvothermal method need to be at high temperature and with long time heating treatment. Furthermore, the surface areas of them are low (<125 m 2 /g). There is hardly a report on the simple and direct preparation of N-doped anatase/brookite mixed phase TiO 2 nanostructures using sol-gel method at low heating temperature. In this paper, the nitrogen-doped anatase/brookite biphasic nanoparticles with large surface area (240 m 2 /g) were successfully prepared using sol-gel method at low temperature (165 • C), and with short heating time (4 h) under autogenous pressure. The obtained sample without subsequent annealing at elevated temperatures showed enhanced photocatalytic efficiency for the degradation of methyl orange (MO) with 4.2-, 9.6-, and 7.5-fold visible light activities compared to P25 and the amorphous samples heated in muffle furnace with air or in tube furnace with a flow of nitrogen at 165 • C, respectively. This result was attributed to the synergistic effects of nitrogen doping, mixed crystalline phases, and high surface area.

show abstract

Heterostructures Based on TiO₂and Silicon for Solar Hydrogen Generation

Behara¹,

Upadhyay²,

Sharma³

et al. 2015

Advanced Functional Materials

View full text Add to dashboard Cite

One-pot synthesis of nitrogen-doped TiO2 nanorods with anatase/brookite structures and enhanced photocatalytic activity

Cited by 57 publications

References 78 publications

Understanding the Reaction Mechanism of Photocatalytic Reduction of CO2 with H2O on TiO2-Based Photocatalysts: A Review

Understanding the Reaction Mechanism of Photocatalytic Reduction of CO2 with H2O on TiO2-Based Photocatalysts: A Review

Low-Temperature Sol-Gel Synthesis of Nitrogen-Doped Anatase/Brookite Biphasic Nanoparticles with High Surface Area and Visible-Light Performance

Heterostructures Based on TiO₂and Silicon for Solar Hydrogen Generation

Contact Info

Product

Resources

About

One-pot synthesis of nitrogen-doped TiO2 nanorods with anatase/brookite structures and enhanced photocatalytic activity

Cited by 57 publications

References 78 publications

Understanding the Reaction Mechanism of Photocatalytic Reduction of CO2 with H2O on TiO2-Based Photocatalysts: A Review

Understanding the Reaction Mechanism of Photocatalytic Reduction of CO2 with H2O on TiO2-Based Photocatalysts: A Review

Low-Temperature Sol-Gel Synthesis of Nitrogen-Doped Anatase/Brookite Biphasic Nanoparticles with High Surface Area and Visible-Light Performance

Heterostructures Based on TiO2and Silicon for Solar Hydrogen Generation

Contact Info

Product

Resources

About

Heterostructures Based on TiO₂and Silicon for Solar Hydrogen Generation