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硼酸金属化合物的制备及其电催化活性

, PP. 100-104

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Abstract:

采用电化学沉积法于室温、碱性条件下在氧化铟锡(ITO,IndiumTinOxide)表面制备了硼酸钴(CoBi)、硼酸镍(NiBi)、硼酸锰(MnBi)、硼酸铑(RhBi)、硼酸钯(PdBi)几种无定形的硼酸金属化合物薄膜,并对其形貌和结构进行表征,结果表明几种薄膜均为无定形结构.将这几种硼酸金属化合物应用于电化学催化水氧化制氧,对比其催化活性,发现CoBi,NiBi,RhBi具有较高的催化性能,而MnBi和PdBi催化活性较低.进一步研究硼酸pH值对CoBi电催化水分解的影响.发现硼酸有利于金属化合物的制备,pH7~11范围内,HBO32-作为质子受体含量逐渐增大,能接受放氧过程产生的质子,促进催化水分解过程的进行.所得催化剂可自我修复,实现循环利用.

References

[1]  Mcalpin J G,Surendranath Y,Dinca M,et al.EPR evidence for Co(IV) species produced during water oxidation at neutral pH[J].J Am Chem Soc,2010,132(20):6882-6883
[2]  Zhong D K,Gamelin D R.Photoelectrochemical water oxidation by cobalt catalyst("Co-Pi")/α-Fe2O3 composite photoanodes:oxygen evolution and resolution of a kinetic bottleneck[J].J Am Chem Soc,2010,132(12):4202-4207
[3]  Zhong D K,Sun Jianwei,Inumaru H,et al.Solar water oxidation by composite catalyst/α-Fe2O3 photoanodes[J].J Am Chem Soc,2009,131(17):6086-6087
[4]  Steinmiller E M P,Choi K S.Photochemical deposition of cobalt-based oxygen evolving catalyst on a semiconductor photoanode for solar oxygen production[J].Proc Natl Acad Sci,2009,106(49):20633-20636
[5]  Dincǎ M,Surendranath Y,Nocera D G.Nickel-borate oxygen-evolving catalyst that functions under benign conditions[J].Proc Natl Acad Sci,2010,107(23):10337-10341
[6]  Steinmiller E M P,Choi K S.Photochemical deposition of cobalt-based oxygen evolving catalyst on a semiconductor photoanode for solar oxygen production[J].Proc Natl Acad Sci,2009,106(49):20633-20636
[7]  Fujishima A,Honda K.Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38
[8]  Dincǎ M,Surendranath Y,Nocera D G.Nickel-borate oxygen-evolving catalyst that functions under benign conditions[J].Proc Natl Acad Sci,2010,107(23):10337-10341
[9]  陈启元,兰可尹,周澜.半导体光解水研究进展[J].材料导报,2005,19(1):20-23 Chen Qiyuan,Lan Keyin,Zhou Lan.Progress on semiconductor photocatalysts for water decomposition[J].Materials Review,2005,19(1):20-23(in Chinese)
[10]  Osterloh F E.Inorganic materials as catalysts for photochemical splitting of water[J].Chem Mater,2008,20(1):35-54
[11]  Kazuhiko M ,Kazunari D.Meeting the clean energy demand:nanostructure architectures for solar energy conversion[J].J Phys Chem C,2007,111(7):7851-7861
[12]  Bard A J,Fox M A.Artificial photosynthesis:solar splitting of water to hydrogen and oxygen[J].Acc Chem Res,1995,28(3):141-145
[13]  Sun Jianwei,Zhong D K,Gamelin D R.Composite photoanodes for photoelectrochemical solar water splitting[J].Energy Environ Sci,2010,3:1252-1261
[14]  Surendranath Y,Kanan M W,Nocera D G.Mechanistic studies of the oxygen evolution reaction by a cobalt-phosphate catalyst at neutral pH[J].J Am Chem Soc,2010,132(46):16501-16509
[15]  Kanan M W,Nocera D G.In situ formation of an oxygen-evolving catalyst in neutral water containing phosphate and Co2+[J].Science,2008,321(5892):1072-1075
[16]  Surendranath Y,Dincǎ M,Nocera D G.Electrolyte-dependent electrosynthesis and activity of cobalt-based water oxidation catalysts[J].J Am Chem Soc,2009,131(7):2615-2620
[17]  Lutterman D A,Surendranath Y,Nocera D G.A self-healing oxygen-evolving catalyst[J].J Am Chem Soc,2009,131(11):3838-3839
[18]  Kanan M W,Yano J,Surendranath Y,et.al.Structure and valency of a cobalt-phosphate water oxidation catalyst determined by in situ X-ray spectroscopy[J].J Am Chem Soc,2010,132(39):13692-13701

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