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Lanthanum tantalum niobium oxynitride [La(Ta,Nb)O2N] powders were prepared with different Nb/Ta ratios by conventional solid state reaction. La(Ta,Nb)O2N photoanodes were fabricated by electrophoretic deposition of La(Ta,Nb)O2N suspension in acetone onto ITO substrate. The La(Ta,Nb)O2N photoanodes were found to exhibit photoelectrochemical activity for water oxidation reaction in alkaline solution...
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