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氣液爆轟控制合成多晶納米二氧化鈦
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作者單位:

1.中國礦業(yè)大學(xué) 力學(xué)與土木工程學(xué)院，江蘇 徐州 221116;2.中國礦業(yè)大學(xué) 深部巖土力學(xué)與地下工程國家重點(diǎn)實(shí)驗(yàn)室，江蘇 徐州 221116;3.中國礦業(yè)大學(xué) 爆炸力學(xué)與工程爆破研究中心，江蘇 徐州 221116;4.中國礦業(yè)大學(xué) 安全工程學(xué)院，江蘇 徐州 221116

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基金項(xiàng)目:

國家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）12072363


Controllable Synthesis of Polycrystalline Nanostructure TiO2 by Gaseous-Liquid Detonation Method
Author:
Affiliation:

1.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China;2.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China;3.Explosive Mechanics and Engineering Blasting Research Center, China University of Mining and Technology, Xuzhou 221116, China;4.School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China

Fund Project:

National Natural Science Foundation of China (12072363); National Key Research and Development Project (2020YFA0711800)

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    摘要:

    以氫氣、氧氣和四氯化鈦為混合前驅(qū)體，通過氣液爆轟法合成了多晶納米二氧化鈦。研究了不同摩爾比例的前驅(qū)體和初始反應(yīng)壓力對(duì)納米二氧化鈦晶相結(jié)構(gòu)的影響。采用X射線衍射及透射電子顯微鏡對(duì)產(chǎn)物的納米結(jié)構(gòu)、成分、顆粒大小和形態(tài)進(jìn)行了表征。結(jié)果表明：獲得的二氧化鈦存在純凈的銳鈦礦相、純凈的金紅石相和混合相，其中混合相的球形或者類球形顆粒粒徑為20~150 nm。分析了納米二氧化鈦在氣液爆轟中的形成機(jī)制。基于C-J理論和化學(xué)反應(yīng)數(shù)據(jù)，計(jì)算了爆轟參數(shù)；該參數(shù)驗(yàn)證了不同摩爾比例的前驅(qū)體和初始反應(yīng)壓力對(duì)控制合成多晶納米二氧化鈦的影響。

    Abstract:

    The polycrystalline nano-TiO2 was synthesized by the gaseous-liquid detonation (GLD) method using H2, O2, and TiCl4 as the mixture precursors. The effects of different molar ratios of precursors and initial reaction pressures on the nano-TiO2 crystalline structures were studied. The nanocrystal structures, components, particle size, and morphology were characterized by the X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results demonstrate that the nano-TiO2 consists of pure anatase-TiO2, pure rutile-TiO2, and the mixtures of spherical or quasi-spherical morphologies with particle size of 20~150 nm. Furthermore, the formation mechanism of nano-TiO2 by GLD method was analyzed. The relevant GLD parameters were calculated based on the C-J theory and the related chemical reaction data, which effectively verifies the influence of different molar ratios of precursors and initial pressures on the controllable synthesis of polycrystalline nano-TiO2.

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引用本文

羅寧,孫鑫,范學(xué)如,梁漢良,陳彥龍,張桂民,董紀(jì)偉,翟成.氣液爆轟控制合成多晶納米二氧化鈦[J].稀有金屬材料與工程,2022,51(1):119~126.[Luo Ning, Sun Xin, Fan Xueru, Liang Hanliang, Chen Yanlong, Zhang Guimin, Dong Jiwei, Zhai Cheng. Controllable Synthesis of Polycrystalline Nanostructure TiO2 by Gaseous-Liquid Detonation Method[J]. Rare Metal Materials and Engineering,2022,51(1):119~126.]
DOI：10.12442/j. issn.1002-185X.20200895

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歷史
  • 收稿日期:2020-11-19
  • 最后修改日期:2020-12-10
  • 錄用日期:2020-12-23
  • 在線發(fā)布日期: 2022-02-04
  • 出版日期: 2022-01-28