Octahedral-shaped perovskite nanocrystals and their visible-light photocatalytic activity

Yin, Simin; Tian, He; Ren, Zhaohui; Wei, Xiao; Chao, Chunying; Pei, Jingyuan; Li, Xiang; Xu, Gang; Shen, Ge; Han, Gaorong

doi:10.1039/c4cc01118j

Cited by 29 publications

(16 citation statements)

References 27 publications

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“…Some interesting results have already been reported: Grewe et al [89] for example recently showed the simple hydrothermal synthesis of NaTaO 3 nanoparticles leading to the hydrogen production rate of 94 µmol/h. Yin et al [90] prepared also via hydro- thermal synthesis octahedral shaped PbTiO 3 nanocrystals with well define (111) facets that exhibit interesting performances related to the degradation of Methylene blue. These results have never been reported in conventional perovskite systems (100% degradation of Methylene blue 10 −5 M after 35 min of irradiation).…”

Section: Ternary and Quaternary Metal Oxidesmentioning

confidence: 99%

TiO2- and ZnO-Based Materials for Photocatalysis: Material Properties, Device Architecture and Emerging Concepts

Ishchenko¹,

Rogé²,

Lamblin³

et al. 2016

Semiconductor Photocatalysis - Materials, Mechanisms and Applications

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Numerous kinds of photocatalysts such as oxide-, nitride-or sulfide-based semiconductors, conducting polymers or graphene oxide based materials have emerged since the discovery of water splitting on TiO electrodes in . Yet, metal-oxides are still largely the main family of materials promoted into photocatalytic applications.In this chapter, we focus on the application of supported nanostructures of metal oxides, principally TiO and ZnO, for the heterogeneous photocatalysis. We emphasize the benefits of increasing the specific surface area by using the direct growth of metal-oxide nanostructures onto porous templates. "mong the numerous strategies to improve the photocatalytic activity, we detail the fabrication of semiconductor metal-oxide heterostructures promoting the charge separation under UV irradiation. We also describe how the use of plasmonic nanostructures allows the shifting of the light absorption in the visible range. Finally, we give an overview on the new strategies to increase the photocatalytic activity with new architectures and materials based on metal-oxides.

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Section: Ternary and Quaternary Metal Oxidesmentioning

confidence: 99%

TiO2- and ZnO-Based Materials for Photocatalysis: Material Properties, Device Architecture and Emerging Concepts

Ishchenko¹,

Rogé²,

Lamblin³

et al. 2016

Semiconductor Photocatalysis - Materials, Mechanisms and Applications

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“…According to the XPS spectra of Ti2p, O1s, and Cl2p of different TiO 2 ( Figure S2 ), it is confirmed that, as the concentration of used HCl is increased, the binding energies (458.4 eV for Ti2p 3/2 and 464.1 eV for Ti2p 1/2 ) of Ti2p, resulting from Ti 4+ , gradually increased, whereas that of O1s is almost unchanged. The XPS spectra of O1s are broad and asymmetric, implying that there exists at least two kinds of oxygen chemical states, including crystal lattice oxygen (O L ) centering at 529.5 eV and hydroxyl (O H ) one centering at 531.5 eV 16 25 . The XPS peak at 197.8 eV is mainly assigned to the chemically-adsorbed chloride (Cl − ) on the surfaces, and the amount of adsorbed chloride is increased as the rutile phase is gradually formed ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Exceptional performance of photoelectrochemical water oxidation of single-crystal rutile TiO2 nanorods dependent on the hole trapping of modified chloride

Zhang

Cui

Humayun

et al. 2016

Sci Rep

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It is highly desired to effectively trap photogenerated holes for efficient photoelectrochemical (PEC) water oxidation to evolve O2 on oxide semiconductors. Herein, it is found for the first time mainly based on the time-resolved- and atmosphere-controlled- surface photovoltage responses that the modified chloride would effectively trap photogenerated holes so as to prolong the charge lifetime and hence promote charge separation of single-crystal rutile TiO2 nanorods. Its strong capacity to trap holes, comparable to the widely-used methanol and Co(II) phosphate, is well responsible for the exceptional photoactivities for PEC water oxidation to evolve O2 on rutile nanorods with a proper amount of chloride modified, about 2.5-time high as that on the resulting anatase nanoparticles, even 10-time if the surface area is considered. Moreover, it is suggested that the hole trapping role of chemically-adsorbed chloride is related to its lonely-pair electrons, and to the subsequently-produced intermediate Cl atoms with proper electronegativity for evolving O2. Interestingly, this finding is also applicable to the chloride-modified anatase TiO2. This work will provide a feasible strategy to design high-activity nanostructured semiconductor photoanodes for PEC water oxidation, even for overall water splitting.

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“…Furthermore, some aromatic pollutants can also cause carcinogenic and teratogenic effects [17]. Hence, various organic pollutant removal technologies has been developed, including adsorption [18,19], membrane filtration [20], photocatalytic degradation [21,22], chemical oxidation [23], flocculation [24] and electrooxidation [25]. Catalytic technology has been widely studied because of its high efficiency, simple operation, low cost, and wide range of applications [26,27].…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of functional cellulose paper with high-capacity immobilization of Ag nanoparticles for catalytic applications for tannery wastewater

Lan

Jiang

et al. 2020

J Leather Sci Eng

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It has been a research goal to develop macroscopic materials with an optimized surface structure to affix silver nanoparticles which could contaminate water and maximize their practical functions. Cellulose paper is a versatile biomass material valued for its abundance, low cost, biocompatibility, and natural composition. Until now, its potential application in water purification has not been adequately explored. In this study, gallic acid-modified silver nanoparticles (GA@AgNPs) were loaded onto commercial cellulose filter paper using a simple lipoic acid

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Octahedral-shaped perovskite nanocrystals and their visible-light photocatalytic activity

Cited by 29 publications

References 27 publications

TiO2- and ZnO-Based Materials for Photocatalysis: Material Properties, Device Architecture and Emerging Concepts

TiO2- and ZnO-Based Materials for Photocatalysis: Material Properties, Device Architecture and Emerging Concepts

Exceptional performance of photoelectrochemical water oxidation of single-crystal rutile TiO2 nanorods dependent on the hole trapping of modified chloride

Facile fabrication of functional cellulose paper with high-capacity immobilization of Ag nanoparticles for catalytic applications for tannery wastewater

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