Structural transformation of Sm3+ doped BiVO4 with high photocatalytic activity under simulated sun-light

Luo, Yangyang; Tan, Guoqiang; Dong, Guohua; Zhang, Lili; Huang, Jing; Yang, Wei; Zhao, Chengcheng; Ren, Huijun

doi:10.1016/j.apsusc.2014.10.168

Cited by 73 publications

(16 citation statements)

References 31 publications

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“…Evidently, the formation of Nd-BiVO 4 composite with the efficiency separation and transfer of photogenerated carriers is more possible, and well-fabricated Nd-BiVO 4 composite could availably restrict the recombination of photogenerated carriers and effectively enhance the quantum yield. Although, there are some reports about lanthanide elements doping BiVO 4 [29][30][31][32][33], however, to the best of our knowledge, 2D long rod shaped structures NdBiVO4 composite has never been constructed, and the influence of lanthanide sources on the photocatalytic activity of the Nd doped BiVO 4 for the degradation of phenol and desulfurization under visible irradiation has never been studied. Hence, in the present work, we synthesized Nd-doped BiVO 4 composite.…”

Section: Introductionmentioning

confidence: 86%

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The synthesize of lanthanide doped BiVO4 and its enhanced photocatalytic activity

Gao

Wang

Zhai

et al. 2015

Journal of Molecular Liquids

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Section: Introductionmentioning

confidence: 86%

“…The optical absorption property of a semiconductor is an important factor in determining its photocatalytic performance. However, the optical absorption property is frequently deemed to be relevant to the electronic structure feature [30]. The optical properties of the Nddoped BiVO 4 samples are shown in Fig.…”

Section: Xrd Analyses Of Nd-doped Bivo 4 Samplementioning

confidence: 99%

The synthesize of lanthanide doped BiVO4 and its enhanced photocatalytic activity

Gao

Wang

Zhai

et al. 2015

Journal of Molecular Liquids

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“…The preparation of object BiVO 4 was investigated previously with the hydrothermal method. It can be prepared under 140 C for 15 h and latter the object BiVO 4 in the carrier pores was calcined at 400 C for 3 h. It was reported by Guoqiang Tan [15] that tz-BiVO 4 was formed at low temperature and converted into ms-BiVO 4 at higher temperature. Compared to the patterns of pure carrier Sr 2 MgSi 2 O 7 :Eu 2þ , Dy 3þ (PDF 15-0016) and object BiVO 4 (PDF 14-0688), strength of the characteristic peaks decreased rapidly.…”

Section: Evaluation Of Photocatalytic Activitymentioning

confidence: 99%

Study on photocatalysis and dynamics properties of self-catalysis BiVO4 assembled in porous Sr2MgSi2O7:Eu2+,Dy3+

Yuan

Shen

Hou

et al. 2016

Journal of Alloys and Compounds

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“…That is, these results from inkjet-printed samples indicate that Sm alloying on the Bi site increases photoanodic activity, and similar alloying of Sm 3+ onto the Bi 3+ site has recently been demonstrated to enhance charge separation in BiVO 4 photoanodes. 56 As discussed in that work, the large number of materials properties that change with alloying introduces challenges in determining the improvement mechanism, and since this mechanism cannot be understood without first understanding the base compound, we relegate further exploration of the Sm alloying to future work.…”

Section: Chemistry Of Materialsmentioning

confidence: 99%

Discovery and Characterization of a Pourbaix-Stable, 1.8 eV Direct Gap Bismuth Manganate Photoanode

Newhouse¹,

Reyes‐Lillo²,

Guo³

et al. 2017

Chem. Mater.

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Solar-driven oxygen evolution is a critical technology for renewably synthesizing hydrogen-and carboncontaining fuels in solar fuel generators. New photoanode materials are needed to meet efficiency and stability requirements, motivating materials explorations for semiconductors with (i) band-gap energy in the visible spectrum and (ii) stable operation in aqueous electrolyte at the electrochemical potential needed to evolve oxygen from water. Motivated by the oxygen evolution competency of many Mn-based oxides, the existence of several Bi-containing ternary oxide photoanode materials, and the variety of known oxide materials combining these elements with Sm, we explore the Bi−Mn−Sm oxide system for new photoanodes. Through the use of a ferri/ferrocyanide redox couple in high-throughput screening, BiMn 2 O 5 and its alloy with Sm are identified as photoanode materials with a nearideal optical band gap of 1.8 eV. Using density functional theory-based calculations of the mullite BiO 5 phase, we identify electronic analogues to the well-known BiVO 4 photoanode and demonstrate excellent Pourbaix stability above the oxygen evolution Nernstian potential from pH 4.5 to 15. Our suite of experimental and computational characterization indicates that BiMn 2 O 5 is a complex oxide with the necessary optical and chemical properties to be an efficient, stable solar fuel photoanode. ■ INTRODUCTIONTo photoelectrochemically synthesize fuel, solar fuel generators couple the oxygen evolution reaction (OER) to a fuel-forming reaction, typically hydrogen evolution or carbon dioxide reduction.1 Solar fuel generation comprises a promising renewable energy technology and is particularly desirable among renewable energy technologies due to the high-energydensity storage and transportation of chemical fuels. While efficient solar fuel generators can be created by use of tandem photoelectrochemical (PEC) cells, which combine an OER photoanode and a fuel-forming photocathode, widespread deployment of this technology is impeded by several technological challenges, most notably the development of an efficient and stable photoanode. 2−6While substantial technology development has proceeded through utilization of highly stable metal oxide photoanodes such as TiO 2 and WO 3 , the optical absorption of these semiconductors is limited to the ultraviolet spectrum, substantially limiting solar conversion efficiency. Substantial effort has also been placed in the development of α-Fe 2 O 3 , which is remarkable for its combination of high stability under OER photoanode operating conditions and relatively low band-gap energy near 2 eV. 7,8 While the performance of α-Fe 2 O 3 is limited by intrinsic charge-transport properties, it remains a fixture in solar fuel research because, until the present work, no other material has been shown to rival its stability and desirable band-gap energy. By combining high-throughput experimentation and materials theory, we identify BiMn 2 O 5 as a photoanode that meets these stringent requirements. With Pou...

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Structural transformation of Sm3+ doped BiVO4 with high photocatalytic activity under simulated sun-light

Cited by 73 publications

References 31 publications

The synthesize of lanthanide doped BiVO4 and its enhanced photocatalytic activity

The synthesize of lanthanide doped BiVO4 and its enhanced photocatalytic activity

Study on photocatalysis and dynamics properties of self-catalysis BiVO4 assembled in porous Sr2MgSi2O7:Eu2+,Dy3+

Discovery and Characterization of a Pourbaix-Stable, 1.8 eV Direct Gap Bismuth Manganate Photoanode

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