X 射线衍射技术对锐钛矿二氧化钛纳米晶体优先取向和晶体应变行为的影响

Md. Ashraful Alam, Raton Kumar Bishwas, Sabrina Mostofa, Shirin Akter Jahan
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摘要

本研究大纲的主要目标是在 50.0 °C下将异丙醇氧化钛(TTIP)转化为高结晶优选取向为主(101)、低晶体应变的 90.0 %锐钛矿-二氧化钛相。随着时间的推移,酸化剂(IP)与酸性水介质发生反应,锐钛矿-二氧化钛得到优先生长。X 射线衍射(XRD)分析中的穷举重组确保了晶体应变、晶格体积、晶格参数、d-间距和晶粒尺寸。紫外-可见-近红外光谱(UV-vis-NIR)显示,纳米尺寸减小时,最大吸收波长为 320.0 nm,蓝移为 0.78 a.u.,较大尺寸锐钛矿二氧化钛的带隙较小,为 3.0313 eV。TEM 的纳米束衍射(NBD)也揭示了优先取向,在施加于来自 LaB6 灯丝的 200.0 kv 平行电子束的衍射图样中,可实现定性晶格类型和高度晶体取向的主要 (101) 平面 5.60 nm-1。
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Impact on preferred orientation and crystal strain behavior of nanocrystal anatase-TiO2 by X-ray diffraction technique

The primary goal of this research outline is the conversion of titanium isopropoxide (TTIP) at 50.0 °C to form a high crystalline preferred oriented predominant (101) with a low crystal strain of 90.0 % anatase-TiO2 phase. With the interval of time, the peptizing agent (IP) reacts to an acidic aqueous medium and preferential growth of anatase-TiO2 has been identified. Exhaustive recombination in X-ray diffraction (XRD) analysis ensures the crystal strain, lattice volume, lattice parameters, d-spacing and crystallite size. UV–vis-NIR showed maximum absorption of 320.0 nm with 0.78 a.u. at blue shift for decreasing nano-size and smaller bandgap 3.0313 eV of larger dimensions anatase-TiO2. The preferred orientation also revealed by nanobeam diffraction (NBD) of TEM enables qualitative lattice type and highly crystal orientated predominant (101) plane 5.60 nm−1 in a diffraction pattern imposed on 200.0 kv parallel electron bean from LaB6 filament.

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来源期刊
CiteScore
8.40
自引率
0.00%
发文量
100
审稿时长
33 weeks
期刊介绍: The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.
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