Synthesis of Crystalline Nanosized Titanium Dioxide via a Reverse Micelle Method at Room Temperature

来源 :Chinese Chemical Letters | 被引量 : 0次 | 上传用户:yifeng9131120
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Crystalline TiO2 nanoparticles were synthesized by hydrolysis of titanium tetrabutoxide in the presence of hydrochloric acid in NP-5 (Igepal CO-520)/ cyclohexane reverse micelle solution at room temperature. Pure rutile nanoparticles were obtained at an appropriate acid concentration. The influences of various reaction conditions such as the concentration of acids, water content value (w=[H2O]/[NP-5]) on the formation, crystal phase, morphology, and size of the TiO2 particles were investigated. Crystalline TiO2 nanoparticles were synthesized by hydrolysis of titanium tetrabutoxide in the presence of hydrochloric acid in NP-5 (Igepal CO-520) / cyclohexane reverse micelle solution at room temperature. Pure rutile nanoparticles were obtained at an appropriate acid concentration. The influences of various reaction conditions such as the concentration of acids, water content value (w = [H2O] / [NP-5]) on the formation, crystal phase, morphology, and size of the TiO2 particles were investigated.
其他文献
In the presence of NaBH4/BF3, allyl ethers underwent deallylation to the corresponding alcohols or phenols in good yield and high reaction rate. In the presenc
选取基质沥青和SBS改性沥青以及NaCl、CaCl2融雪剂,制备了沥青试样,采用软化点、针入度、延度、粘度和红外光谱等试验方法,分析了氯盐融雪剂浸泡后的沥青高温性能、低温性能
An improved method for preparation of 4-methyl-2-phenyl piperazine and its derivatives with higher yield and inexpensive reagents was developed, the products we
The Pd-B/g-Al2O3 amorphous alloy catalyst and Pd/g-Al2O3 crystalline metal catalyst were prepared by KBH4 reduction and routine impregnation, respectively. Pd-
一天,莫莉花扭扭捏捏地对莫小成说:“小成,你能不能叫我花姐?我听别班学生这么叫实习老师哥啊姐的,挺亲切的。”莫小成愣了一下,拿在手上的笔也掉了,他有点儿不爽地回答:“你是我妈,干吗要我叫你姐?我不叫!”  莫莉花叹了一口气:“本来想给你换个你念叨了好久的手机,没想到一个小小的要求你都不答应!我看还是等它降价后再说吧。”  莫小成霍地一下站起来,两眼放光,然后又强忍激动地坐下,故作平静地说:“是不是
作者对41例2周至12个月婴儿的67只正常耳作了同侧声反射测试,并与20个成人正常耳测试结果进行了对照。使用仪器为GS I 1723Ⅱ型中耳分析仪,但声刺激作了修改,使呈三个刺激1
1 病例报告患儿郑某某 ,男 ,8岁。脐周阵发性胀痛一天 ,伴呕吐胃内容物 ,2 0 0 0年 1月 11日就诊拟诊为“腹痛原因待查 ,腹型癫 ?”当天脑电图 (EEG)检查结果为限局性右中央
在有机溶剂中 ,青霉素酰胺酶可以催化苯氧乙酸甲酯(POME)与 1-丙醇的转酯反应。该酶在 KCl存在下冻干时[已配成含有 98% (w/w)盐及酶和磷酸缓冲液各 1% (w/w)的酶制品 ] ,它
ChiralSchiffbasecomplexesareveryefficientforawiderangeofreactions ,includingexpoxida tion[1] ,epoxideringopening[2 ] ,Diels Alderreac tion[3 ] ,aldolreaction[4
6月23日凌晨,在经过约4个小时的协商之后,欧洲理事会主席图思克终于给出了一个让市场长舒一口气的消息——当晚的峰会避免了混乱而不可控的“希腊意外”。“今天希腊提案显示