Preparation and photocatalytic activities of two new Zn-doped SrTiO3 and BaTiO3 photocatalysts for hydrogen production from water without cocatalysts loading

Zou, Jian‐Ping; Zhang, Long-Zhu; Luo, Shenglian; Leng, Le-Hui; Luo, Xubiao; Zhang, Shuang‐Nan; Luo, Yun; Guo, Guo‐Cong

doi:10.1016/j.ijhydene.2012.08.133

Cited by 93 publications

(41 citation statements)

References 57 publications

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“…BaTiO3 has also been used as catalyst for oxidation and dry reforming of methane [4][5][6], for NOx reduction [7], as photocatalyst for hydrogen production [8] and for toluene degradation [9] and, finally, its properties have been checked for biomedical applications [10,11]. The extensive use of perovskite-type mixed-metal oxides as catalysts and/or as catalyst supports is due to their ability to provide high (lattice) oxygen mobility and also high structural stability [12].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

Albaladejo-Fuentes

López-Suárez

Sánchez-Adsuar

et al. 2016

Applied Catalysis A: General

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Highlights-BaTiO3 and BaTi0.8Cu0.2O3 perovskites were synthesized using sol-gel and hydrothermal methods.-The location of copper in the catalyst depends on the synthesis method.-Cu-BTOsg, with Cu incorporated into the structure, presents a high NOx storage capacity.-Cu-BBOH, with CuO highly dispersed on the surface, shows a high activity for NO to NO2 oxidation. This is a previous version of the article published in Applied Catalysis A: General. 2016General. , 519: 7-15. doi:10.1016General. /j.apcata.2016 2 AbstractThe effect of the synthesis method (hydrothermal and sol-gel) on the properties of BaTi0.8Cu0.2O3 perovskites as catalysts for NOx and soot removal has been analyzed. X-ray powder diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), ICP-AES, N2 adsorption at -196ºC, Raman spectroscopy, Field Emission Scanning Electron Microscopy (FESEM) and temperature programmed reduction with hydrogen (H2-TPR) have been used for catalysts characterization.To test their catalytic activity, NOx storage and soot combustion temperature programmed reaction tests have been carried out.The results allow to conclude that the synthesis method determines the position of copper on the perovskite structure and, therefore, the catalytic applications. When the hydrothermal method is used the copper is highly dispersed on the perovskite surface, obtaining a catalyst with a high activity for the NO to NO2 oxidation reaction, which can be used as oxidation catalyst for soot removal. Nevertheless, using the sol-gel method, copper is incorporated into the perovskite structure and, consequently, the catalyst presents a high NOx storage capacity

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Section: Introductionmentioning

confidence: 99%

Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

Albaladejo-Fuentes

López-Suárez

Sánchez-Adsuar

et al. 2016

Applied Catalysis A: General

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“…Under the irradiation of the light, generally, 25 photogenerated electrons and holes can be formed in a photocatalyst. 23 Photocatalyst + hv → Photocatalyst + e -+ h + (3)…”

Section: Photocatalyti C Performance Of the Coral-like Batiomentioning

confidence: 99%

Simple hydrothermal synthesis and photocatalytic performance of coral-like BaTiO₃ nanostructures

Zheng

Xiang

et al. 2015

RSC Adv.

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Coral-like BaTiO 3 nanostructures have been successfully synthesized via a simple hydrothermal route at 150 °C for 15 h, employing BaCl 2 , tetrabutyltitanate [(C 4 H 9 O) 4 Ti] and NaOH as original reactants without the assistance of any surfactant or template. The phase of the as-obtained BaTiO 3 was characterized by X-ray powder diffraction (XRD). Energy dispersive spectrometry (EDS), scanning 10 electron microscopy (SEM) and (high-resolution) transmission electron microscopy (TEM/HRTEM) were employed for the composition and morphology analyses of the final product. Some factors influencing the formation of coral-like BaTiO 3 nanostructures were investigated, including the amount of original NaOH, the barium ion source, and the reaction temperature and time. Experiments showed that the as-prepared coral-like BaTiO 3 nanostructures presented good photocatalytic activity for the 15 degradation of methyl orange (MO) dye under the irradiation of the mimic sunlight. It was found that the photocatalytic activity of coral-like BaTiO 3 nanostructures could be affected by the pH value of the system.

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“…Furthermore, with increasing doping of Sr 2+ , the BaTiO 3 X-ray diffraction (XRD) peaks shift to slightly higher angles (Fig. S1), indicating that there is partial substitution of Ba 2+ by Sr 2+ , forming the Ba 1−x Sr x TiO 3 solid solution [37,38]. The chemical states of Ba 0.4 Sr 0.6 TiO 3 and 40CBSTO were studied by XPS.…”

Section: Characterization Of Materialsmentioning

confidence: 99%

High-performance heterostructured CdS/Ba1−xSrxTiO3 system with unique synergism for photocatalytic H2 evolution

Lei

Bao

et al. 2015

Applied Catalysis A: General

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Preparation and photocatalytic activities of two new Zn-doped SrTiO3 and BaTiO3 photocatalysts for hydrogen production from water without cocatalysts loading

Cited by 93 publications

References 57 publications

Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

Simple hydrothermal synthesis and photocatalytic performance of coral-like BaTiO₃ nanostructures

High-performance heterostructured CdS/Ba1−xSrxTiO3 system with unique synergism for photocatalytic H2 evolution

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Preparation and photocatalytic activities of two new Zn-doped SrTiO3 and BaTiO3 photocatalysts for hydrogen production from water without cocatalysts loading

Cited by 93 publications

References 57 publications

Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

Tailoring the properties of BaTi0.8Cu0.2O3 catalyst selecting the synthesis method

Simple hydrothermal synthesis and photocatalytic performance of coral-like BaTiO3 nanostructures

High-performance heterostructured CdS/Ba1−xSrxTiO3 system with unique synergism for photocatalytic H2 evolution

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Simple hydrothermal synthesis and photocatalytic performance of coral-like BaTiO₃ nanostructures