武汉科技大学学报(自然科学版)
武漢科技大學學報(自然科學版)
무한과기대학학보(자연과학판)
JOURNAL OF WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
1期
32-35,44
,共5页
VO2 (B)纳米带%水热合成%水热条件%结构
VO2 (B)納米帶%水熱閤成%水熱條件%結構
VO2 (B)납미대%수열합성%수열조건%결구
VO2 (B) nanobelts%hydrothermal synthesis%hydrothermal condition%structure
以V2 O5和草酸的黄褐色悬浊液为前驱物水热合成 VO2(B)纳米带,采用XRD技术研究水热条件对V O 2(B )纳米带结构的影响。结果表明,在水热温度为180~190℃、水热时间为20~24 h时,可以制备结晶良好的VO2(B)纳米带;随着水热温度的升高,VO2(B)纳米带的平均晶粒尺寸逐渐增大,晶格畸变度逐渐减小,且产物的择优生长趋势逐渐明显;水热反应初期,VO2(B)纳米带的平均晶粒尺寸增长较快,随着水热时间的延长,VO2(B)纳米带的晶粒生长趋于平衡,晶格畸变度逐渐减小并趋于平缓,且产物逐渐形成了一定的结晶取向。
以V2 O5和草痠的黃褐色懸濁液為前驅物水熱閤成 VO2(B)納米帶,採用XRD技術研究水熱條件對V O 2(B )納米帶結構的影響。結果錶明,在水熱溫度為180~190℃、水熱時間為20~24 h時,可以製備結晶良好的VO2(B)納米帶;隨著水熱溫度的升高,VO2(B)納米帶的平均晶粒呎吋逐漸增大,晶格畸變度逐漸減小,且產物的擇優生長趨勢逐漸明顯;水熱反應初期,VO2(B)納米帶的平均晶粒呎吋增長較快,隨著水熱時間的延長,VO2(B)納米帶的晶粒生長趨于平衡,晶格畸變度逐漸減小併趨于平緩,且產物逐漸形成瞭一定的結晶取嚮。
이V2 O5화초산적황갈색현탁액위전구물수열합성 VO2(B)납미대,채용XRD기술연구수열조건대V O 2(B )납미대결구적영향。결과표명,재수열온도위180~190℃、수열시간위20~24 h시,가이제비결정량호적VO2(B)납미대;수착수열온도적승고,VO2(B)납미대적평균정립척촌축점증대,정격기변도축점감소,차산물적택우생장추세축점명현;수열반응초기,VO2(B)납미대적평균정립척촌증장교쾌,수착수열시간적연장,VO2(B)납미대적정립생장추우평형,정격기변도축점감소병추우평완,차산물축점형성료일정적결정취향。
Effects of different hydrothermal conditions on the structure of VO2 (B) nanobelts which used V2 O5 and oxalic acid as raw materials were studied by XRD method .The results indicate that the optimum hydrothermal temperature and time to prepare the perfect VO 2 (B) nanobelts are 180~190℃ and 20~24 h respectively .The average grain size of VO2 (B) nanobelts increases ,the lattice dis-tortion degree decreases ,and the products pack along a direction with the increase of hydrothermal temperature .The grain size of VO2 (B) nanobelts increase especially at initial stages ,the lattice dis-tortion degree decreases especially at initial stages ,and the products pack along a direction with the prolonging of hydrothermal time .