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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Rapid reduction of titanium dioxide nano-particles by reduction with a calcium reductant
| Title: | Rapid reduction of titanium dioxide nano-particles by reduction with a calcium reductant |
| Authors: | Kikuchi, Tatsuya Browse this author →KAKEN DB | | Yoshida, Masumi Browse this author | | Matsuura, Shiki Browse this author | | Natsui, Shungo Browse this author →KAKEN DB | | Tsuji, Etsuji Browse this author | | Habazaki, Hiroki Browse this author →KAKEN DB | | Suzuki, Ryosuke O. Browse this author →KAKEN DB |
| Keywords: | Electronic materials | | Metals | | Microporousmaterials | | Chemical synthesis | | Microstructure |
| Issue Date: | Sep-2014 |
| Publisher: | Elsevier |
| Journal Title: | Journal of Physics and Chemistry of Solids |
| Volume: | 75 |
| Issue: | 9 |
| Start Page: | 1041 |
| End Page: | 1048 |
| Publisher DOI: | 10.1016/j.jpcs.2014.04.016 |
| Abstract: | Micro-, submicron-,andnano-scaletitaniumdioxideparticleswerereducedbyreductionwithametallic calcium reductantincalciumchloridemoltensaltat1173K,andthereductionmechanismoftheoxides by thecalciumreductantwasexplored.Theseoxideparticles,metalliccalciumasareducingagent,and calcium chlorideasamoltensaltwereplacedinatitaniumcrucibleandheatedunderanargon atmosphere. Titaniumdioxidewasreducedtometallictitaniumthroughacalciumtitanateandlower titanium oxide,andthematerialsweresinteredtogethertoformamicro-poroustitaniumstructurein molten saltathightemperature.Thereductionrateoftitaniumdioxidewasobservedtoincreasewith decreasing particlesize;accordingly,theresidualoxygencontentinthereducedtitaniumdecreases.The obtained micro-poroustitaniumappeareddarkgrayincolorbecauseofitslowsurfacereflection. Micro- porous metallictitaniumwithalowoxygencontent(0.42wt%)andalargesurfacearea(1.794m2 g 1) can besuccessfullyobtainedbyreductionunderoptimalconditions. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/56408 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 菊地 竜也
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