Enhancement of visible-light photocatalytic activity of Pt supported potassium niobate (Pt-KNbO3) by up-conversion luminescence agent (Er3+:Y3Al5O12) for hydrogen evolution from aqueous methanol solution

Guo, Yuwei; Li, Yun; Li, Shuguang; Zhang, Lei; Liu, Ying; Wang, Jun

doi:10.1016/j.energy.2014.12.071

Cited by 40 publications

(13 citation statements)

References 47 publications

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“…The Er 3+ :YAlO 3 was synthesized by the sol-gel and calcination method [36]. Er 2 O 3 and Y 2 O 3 powders were dissolved in HNO 3 with magnetic stirring and heated until transparent.…”

Section: Synthesis Of Er 3+ :Y 3 Al 5 O 12 As Up-conversion Luminescementioning

confidence: 99%

“…Hence, KNbO 3 can be considered as a promising sonocatalyst [39,40]. The band gap (3.5 eV) of KNbO 3 is slightly wider than that (3.2 eV) of TiO 2 , so the KNbO 3 may display a high sonocatalytic activity under ultrasonic irradiation [36]. Nevertheless, due to the wide-band gap, the KNbO 3 can only absorb high-energy light ( max ≤ 360 nm) to perform photocatalytic reaction.…”

Section: Introductionmentioning

confidence: 98%

“…However, compared with some other semiconductor materials with wide-band gap and high oxidation potential, the TiO 2 is not best choice [36]. A lot of research showed that some perovskite niobates can enhance the efficiency of photocatalytic oxygen evolution at least by an order of magnitude [37,38].…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Er3+:Y3Al5O12/KNbO3 composite and application in innocent treatment of ketamine by using sonocatalytic decomposition method

Zhang

Wei

Huang

et al. 2016

Journal of Hazardous Materials

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A novel sonocatalyst, Er(3+):Y3Al5O12/KNbO3 composite, was synthesized, and then, characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). In order to evaluate the sonocatalytic activity of prepared Er(3+):Y3Al5O12/KNbO3 composite, the sonocatalytic degradation of ketamine, a kind of narcotic drug, was studied. In addition, some influencing factors such as mass ratio, heat-treated temperature and heat-treated time on the sonocatalytic activity of prepared Er(3+):Y3Al5O12/KNbO3 powders and ultrasonic irradiation time on the sonocatalytic degradation of ketamine were examined by using GC-MS machine. The experimental results showed that the Er(3+):Y3Al5O12/KNbO3 composite is a good sonocatalyst in the field of ultrasonic chemistry and the sonocatalytic degradation was an effective method for the innocent treatment of ketamine.

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“…The Er 3+ :YAlO 3 was synthesized by the sol-gel and calcination method [36]. Er 2 O 3 and Y 2 O 3 powders were dissolved in HNO 3 with magnetic stirring and heated until transparent.…”

Section: Synthesis Of Er 3+ :Y 3 Al 5 O 12 As Up-conversion Luminescementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Preparation of Er3+:Y3Al5O12/KNbO3 composite and application in innocent treatment of ketamine by using sonocatalytic decomposition method

Zhang

Wei

Huang

et al. 2016

Journal of Hazardous Materials

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“…The best way is meeting the energy demands of ZnS with wide band-gap to maintain the catalytic activity [11][12][13][14][15][16][17]. Recently, our study suggested that the combination of up-conversion luminescence agent can improve the photocatalytic hydrogen evolution efficiency of some wide band-gap (Ebg ≥ 3.00 eV or λmax ≤ 380 nm) photocatalysts [18][19][20][21].…”

Section: Introductionmentioning

confidence: 98%

Enhanced visible-light photocatalytic hydrogen evolution activity of Er3+:Y3Al5O12/PdS–ZnS by conduction band co-catalysts (MoO2, MoS2 and MoSe2)

Song

Wei

Yang

et al. 2016

International Journal of Hydrogen Energy

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Several conduction band co-catalysts (CBCOs), MoO2, MoS2 and MoSe2, were prepared to improve the visible-light photocatalytic hydrogen evolution activity of Er 3+ :Y3Al5O12/PdS-ZnS from water splitting, in which the PdS is a valence band co-catalyst (VBCO) used to facilitate the photo-generated hole transfer and the Er 3+ :Y3Al5O12 is an up-conversion luminescence agent from visible light to ultraviolet light used to provide the ultraviolet light satisfying the energy demands of wide band-gap ZnS photocatalyst. XRD, SEM, TEM and EDX analyses were employed to confirm the morphology, microstructure and composition of the prepared photocatalysts. UV-vis absorption and PL spectra were also determined to explore luminescence effect of the Er 3+ :Y3Al5O12. The visible-light photocatalytic hydrogen evolution activity of the prepared photocatalysts was evaluated by using Na2S and Na2SO3 as sacrificial reagents in aqueous solution under visible light irradiation. The influential factors such as contents of CBCOs (MoO2, MoS2 and MoSe2) and visible-light irradiation time on visible-light photocatalytic hydrogen evolution of Er 3+ :Y3Al5O12/PdS-ZnS-MoX2 (X = O, S and Se) were investigated in detail. Particularly, Er 3+ :Y3Al5O12/PdS-ZnS-MoSe2 with 0.30 wt% MoSe2 shows the highest

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“…However, at current state the efficiency of photocatalytic hydrogen generation is very low because of the lack of a satisfactory electron donor. Many researches have involved some sacrificial agents as electron donors, such as methanol, formic acid and EDTA [13][14][15][16][17][18]. In fact, these electron donors are also useful chemical products.…”

Section: Introductionmentioning

confidence: 99%

Sol–gel-hydrothermal synthesis of Er3+:Y3Al5O12/Pt–TiO2 membrane and visible-light driving photocatalytic hydrogen evolution from pollutants

Ma¹,

Li²,

Yang³

et al. 2015

Applied Catalysis A: General

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Enhancement of visible-light photocatalytic activity of Pt supported potassium niobate (Pt-KNbO3) by up-conversion luminescence agent (Er3+:Y3Al5O12) for hydrogen evolution from aqueous methanol solution

Cited by 40 publications

References 47 publications

Preparation of Er3+:Y3Al5O12/KNbO3 composite and application in innocent treatment of ketamine by using sonocatalytic decomposition method

Preparation of Er3+:Y3Al5O12/KNbO3 composite and application in innocent treatment of ketamine by using sonocatalytic decomposition method

Enhanced visible-light photocatalytic hydrogen evolution activity of Er3+:Y3Al5O12/PdS–ZnS by conduction band co-catalysts (MoO2, MoS2 and MoSe2)

Sol–gel-hydrothermal synthesis of Er3+:Y3Al5O12/Pt–TiO2 membrane and visible-light driving photocatalytic hydrogen evolution from pollutants

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