期刊
CRYSTAL GROWTH & DESIGN
卷 16, 期 3, 页码 1583-1590出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.5b01698
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资金
- Natural Sciences and Engineering Research Council of Canada
A one-step method is introduced for synthesizing rutile TiO2 nanorods (TNRs) directly from Ti metal. TNRs are generated by hydrothermally processing a Ti metal disc in H2SO4/CuSO4 solutions at 150 degrees C. In a 112-day long experiment, different ledgewise growth mechanisms are observed in the early (7-day) and the late (112-day) stages of TNR formation. A unique phenomenon is observed in that the length of the TNRs is a function of processing time and the H2SO4/CuSO4 concentration, whereas the diameter of the TNRs is almost unaffected. It is found that the diameter of these nanorods can only be affected by variation of temperature. A mechanism involving the critical dimension of the (101) growth front is proposed in this paper. In addition, methyl orange degradation efficiency of 90% was achieved when the fabricated TNRs were used as immobilized photocatalysts.
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