Facile in situ synthesis of graphitic carbon nitride (g-C3N4)-N-TiO2 heterojunction as an efficient photocatalyst for the selective photoreduction of CO2 to CO

Zhou, Sheng; Liu, Ying; Li, Jianmei; Wang, Yajun; Jiang, Guiyuan; Zhang, Zhao; Wang, Daxi; Duan, Aijun; Liu, Jian; Wei, Yuechang

doi:10.1016/j.apcatb.2014.03.037

Cited by 470 publications

(200 citation statements)

References 44 publications

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“…So far, various chemical synthesis methods have been developed to build an intimate contact between the materials, such as hydrothermal, [55] deposition-precipitation, [56] electrodeposition, [57] and calcination. [58,59] The hydrothermal method is a facile and commonly used approach among them, with which the heterostructure can be obtained by one-step reaction. For instance, Truong et al prepared a uniform heterojunction photocatalyst of FeTiO 3 /TiO 2 through the hydrothermal treatment of a homogeneous solution precursor, which could reduce CO 2 into CH 3 OH under both UV and visible-light irradiation.…”

Section: H E C H E M I C a L R E C O R Dmentioning

confidence: 99%

Photocatalytic Reduction of CO₂ over Heterostructure Semiconductors into Value‐Added Chemicals

Guo

Wang

2016

The Chemical Record

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Photoreduction of CO2 , which utilizes solar energy to convert CO2 into hydrocarbons, can be an effective means to overcome the increasing energy crisis and mitigate the rising emissions of greenhouse gas. This article covers recent advances in the CO2 photoreduction over heterostructure-based photocatalysts. The fundamentals of CO2 photoreduction and classification of the heterostructured photocatalysts are discussed first, followed by the latest work on the CO2 photoreduction over heterostructured photocatalysts in terms of the classification of the coupling semiconductors. Finally, a brief summary and a perspective on the challenges in this area are presented.

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Section: H E C H E M I C a L R E C O R Dmentioning

confidence: 99%

Photocatalytic Reduction of CO₂ over Heterostructure Semiconductors into Value‐Added Chemicals

Guo

Wang

2016

The Chemical Record

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“…The main C 1s corresponds to adventitious carbon species presenting a band located at 284.4 eV [44]. The small shoulder at 286.4 and 288.9 eV could be accounted for with the C-N-C and C-(N)3 groups of g-C3N4, respectively [26,45,46]. In addition, the regional spectrum of N 1s for 0.05Fe-CT as seen in Figure 6d could be fitted into two peaks at 399.2 and 400.4 eV, with the former ascribed to C-N=C [34] and the latter to the N-(C)3 of the g-C3N4 [26].…”

Section: Phase Structures and Morphologymentioning

confidence: 99%

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Zhu

Murugananthan

et al. 2018

Catalysts

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Abstract:In the present study, a nanocomposite material g-C 3 N 4 /Fe-TiO 2 has been prepared successfully by a simple one-step hydrothermal process and its structural properties were thoroughly studied by various characterization techniques, such as X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, electron paramagnetic resonance (EPR) spectrum, X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectrometry (UV-vis DRS). The performance of the fabricated composite material towards the removal of phenol from aqueous phase was systematically evaluated by a photocatalytic approach and found to be highly dependent on the content of Fe 3+ . The optimum concentration of Fe 3+ doping that showed a dramatic enhancement in the photocatalytic activity of the composite under visible light irradiation was observed to be 0.05% by weight. The separation mechanism of photogenerated electrons and holes of the g-C 3 N 4 /Fe-TiO 2 photocatalysts was established by a photoluminescence technique in which the reactive species generated during the photocatalytic treatment process was quantified. The enhanced photocatalytic performance observed for g-C 3 N 4 -Fe/TiO 2 was ascribed to a cumulative impact of both g-C 3 N 4 and Fe that extended its spectrum-absorptive nature into the visible region. The heterojunction formation in the fabricated photocatalysts not only facilitated the separation of the photogenerated charge carriers but also retained its strong oxidation and reduction ability.

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“…This approach complements thereby current research trends where efficiency enhancement of carbon nitride is realized by heterojunctions with co-catalytic materials. [11][12][13] In powder form, the g-C 3 N 4 photocatalyst necessitates the presence of sacricial electron donors (triethanolamine for instance), in order to compensate for the charges consumed in the course of proton reduction. To overcome this limitation, the fabrication of macroscopic solid state (photo-) electrodes with compact g-C 3 N 4 lms was soon suggested.…”

Section: -10mentioning

confidence: 99%

Graphitic carbon nitride nano-emitters on silicon: a photoelectrochemical heterojunction composed of earth-abundant materials for enhanced evolution of hydrogen

et al. 2014

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Graphitic carbon nitride is a promising heterogeneous catalyst for light-induced generation of hydrogen. Here, we report the successful formation of nano-scaled carbon nitride structures on silicon, mitigating the known limitations of charge transport within bulky C-N networks. An efficient photoelectrochemical heterojunction is thereby realized, developed from earth-abundant materials only.The conversion of solar energy to chemical energy is one of the principal routes to establish a green global economy.1 Particularly, hydrogen as a product of solar water splitting may assume a decisive role upon transition from fossil to renewable energy resources.2 For realization of the solar-to-hydrogen conversion process by photoelectrochemical water splitting, suitable photoelectrodes still have to be developed and to meet important demands such as efficiency and durability. Most critical, electrode fabrication has to rely on cost-saving material consumption, and the use of earth-abundant materials appears inevitable for novel device architectures. In this respect, the combination of silicon and polymeric graphitic carbon nitride (g-C 3 N 4 ) represents a highly attractive heterostructure, integrating a state-of-the-art photoabsorber and a promising photocatalyst. Silicon-based photoelectrodes on the one hand, already reached near-record efficiencies in light-induced evolution of hydrogen but had to be activated by noble-metal catalysts.3,4 On the other hand, g-C 3 N 4 is an established candidate for photocatalytic hydrogen production since the report of Wang et al. in 2008 (ref. 5) which boosted almost instantaneously the interest in this material due to the prospect of solar fuel generation without use of noble metal catalysts. 6-10

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Facile in situ synthesis of graphitic carbon nitride (g-C3N4)-N-TiO2 heterojunction as an efficient photocatalyst for the selective photoreduction of CO2 to CO

Cited by 470 publications

References 44 publications

Photocatalytic Reduction of CO₂ over Heterostructure Semiconductors into Value‐Added Chemicals

Photocatalytic Reduction of CO₂ over Heterostructure Semiconductors into Value‐Added Chemicals

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Graphitic carbon nitride nano-emitters on silicon: a photoelectrochemical heterojunction composed of earth-abundant materials for enhanced evolution of hydrogen

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Facile in situ synthesis of graphitic carbon nitride (g-C3N4)-N-TiO2 heterojunction as an efficient photocatalyst for the selective photoreduction of CO2 to CO

Cited by 470 publications

References 44 publications

Photocatalytic Reduction of CO2 over Heterostructure Semiconductors into Value‐Added Chemicals

Photocatalytic Reduction of CO2 over Heterostructure Semiconductors into Value‐Added Chemicals

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Graphitic carbon nitride nano-emitters on silicon: a photoelectrochemical heterojunction composed of earth-abundant materials for enhanced evolution of hydrogen

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Product

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Photocatalytic Reduction of CO₂ over Heterostructure Semiconductors into Value‐Added Chemicals

Photocatalytic Reduction of CO₂ over Heterostructure Semiconductors into Value‐Added Chemicals