Self-assembled ionic liquid synthesis of nitrogen-doped mesoporous TiO2 for visible-light-responsive hydrogen production

Liu, Shou Heng; Tang, Wen Ting; Lin, Wei Xing

doi:10.1016/j.ijhydene.2017.08.009

Cited by 27 publications

(7 citation statements)

References 55 publications

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“…where X is the absolute electronegativity of the semiconductor, which is the geometric mean of the electronegativity of the constituent atoms, E e is the energy of free electrons on the hydrogen scale (4.5 eV), and Eg is the band gap of the semiconductor that can be obtained from Fig. S2, and the valence band edge (EVB) can be determined by EVB = ECB + Eg [60,61]. As shown in Fig.…”

Section: Possible Photocatalytic Reaction Mechanismmentioning

confidence: 99%

Enhanced photocatalytic performance of MoS 2 modified by AgVO 3 from improved generation of reactive oxygen species

秦莹莹

李红

卢健

et al. 2018

Chinese Journal of Catalysis

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Section: Possible Photocatalytic Reaction Mechanismmentioning

confidence: 99%

Enhanced photocatalytic performance of MoS 2 modified by AgVO 3 from improved generation of reactive oxygen species

秦莹莹

李红

卢健

et al. 2018

Chinese Journal of Catalysis

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“…This discrepancy is ascribed to the following reasons: photo-reactor design, inert gas (Ar or N 2 ) purging flow rate, light irradiation source, gas sampling method, gas chromatography (GC) analysis conditions, calculations, etc. .00 [421] The photochemical reactions of sacrificial agents (methanol, ethanol, isopropanol, ethylene glycol, glycerol, glucose, lactic acid, triethanolamine, sodium sulfide, sodium sulfite, and sodium sulfide/sodium sulfite mixture) and their degradation products during H 2 production are summarized as follows:…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Hydrogen Production: Role of Sacrificial Reagents on the Activity of Oxide, Carbon, and Sulfide Catalysts

et al. 2019

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Photocatalytic water splitting is a sustainable technology for the production of clean fuel in terms of hydrogen (H2). In the present study, hydrogen (H2) production efficiency of three promising photocatalysts (titania (TiO2-P25), graphitic carbon nitride (g-C3N4), and cadmium sulfide (CdS)) was evaluated in detail using various sacrificial agents. The effect of most commonly used sacrificial agents in the recent years, such as methanol, ethanol, isopropanol, ethylene glycol, glycerol, lactic acid, glucose, sodium sulfide, sodium sulfite, sodium sulfide/sodium sulfite mixture, and triethanolamine, were evaluated on TiO2-P25, g-C3N4, and CdS. H2 production experiments were carried out under simulated solar light irradiation in an immersion type photo-reactor. All the experiments were performed without any noble metal co-catalyst. Moreover, photolysis experiments were executed to study the H2 generation in the absence of a catalyst. The results were discussed specifically in terms of chemical reactions, pH of the reaction medium, hydroxyl groups, alpha hydrogen, and carbon chain length of sacrificial agents. The results revealed that glucose and glycerol are the most suitable sacrificial agents for an oxide photocatalyst. Triethanolamine is the ideal sacrificial agent for carbon and sulfide photocatalyst. A remarkable amount of H2 was produced from the photolysis of sodium sulfide and sodium sulfide/sodium sulfite mixture without any photocatalyst. The findings of this study would be highly beneficial for the selection of sacrificial agents for a particular photocatalyst.

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“…Figure shows the Raman spectra of the pristine, C‐doped, and N‐doped rutile TiO 2 ceramic 3D‐TPC samples, respectively. It demonstrated that they had the same characteristic peaks of rutile TiO 2 phase at 143 cm −1 (B 1g ), 238 cm −1 (B 1g ), 446 cm −1 (E g ), and 610 cm −1 (A 1g ), which suggested that either C or N dopant did not form other phases during the doping process. This observation was consistent with the XRD analysis results, and may indicate that C or N dopant did enter the rutile TiO 2 lattice because XPS analysis results demonstrated the existence of C or N species other than surface‐adsorbed ones in doped samples.…”

Section: Resultsmentioning

confidence: 92%

Modulation of terahertz properties of 3D ceramic photonic crystals via post‐creation non‐metal anion doping treatment

et al. 2019

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Ceramic photonic crystals have wide application potentials for THz technology due to their characteristic strong chemical stability and high temperature resistance for demanding environment. However, it is still a challenge to modulate the THz properties of as-prepared ceramic TPCs via post-creation treatments to satisfy different application requirements. In this work, the THz properties of rutile TiO 2 ceramic 3D-TPCs were modulated by non-metal anion doping of either carbon or nitrogen, which was firstly created by the direct-writing technique with a TiO 2 sol-gel ink followed by the high temperature sintering process at 1200°C. Calcination of the pristine rutile TiO 2 ceramic 3D-TPCs in either CO or NH 3 atmosphere successfully doped either C or N dopants into rutile TiO 2 ceramic 3D-TPCs, respectively, which changed their dielectric properties and subsequently induced different THz properties on these ceramic 3D-TPCs with the same structure. Their THz properties were found to be largely affected by the specific nature of the dopant. Compared with the pristine rutile TiO 2 ceramic 3D-TPC, the bandgap positions of both C-doped and Ndoped rutile TiO 2 ceramic 3D-TPCs largely shifted toward the higher frequency, while the N-doped sample demonstrated a much broader bandgap. Thus, non-metal anion doping could be an effective post-creation approach to modulate the THz properties of ceramic TPCs. K E Y W O R D S 3D-terahertz photonic crystals, anion doping, direct-writing, rutile TiO 2 , sol-gel ink How to cite this article: Wang R, Yang W, Gao S, et al. Modulation of terahertz properties of 3D ceramic photonic crystals via post-creation non-metal anion doping treatment. J Am Ceram Soc. 2019;102:4688-4697. https://doi.

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Self-assembled ionic liquid synthesis of nitrogen-doped mesoporous TiO2 for visible-light-responsive hydrogen production

Cited by 27 publications

References 55 publications

Enhanced photocatalytic performance of MoS 2 modified by AgVO 3 from improved generation of reactive oxygen species

Enhanced photocatalytic performance of MoS 2 modified by AgVO 3 from improved generation of reactive oxygen species

Photocatalytic Hydrogen Production: Role of Sacrificial Reagents on the Activity of Oxide, Carbon, and Sulfide Catalysts

Modulation of terahertz properties of 3D ceramic photonic crystals via post‐creation non‐metal anion doping treatment

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