采用改进的喷雾热解方法———异步脉冲超声喷雾热解法(APUSP),以B iC l3、硫脲和碘溶液为前驱液,在非晶衬底上成功地制备了B iSI纳米棒阵列薄膜.对采用异步脉冲超声喷雾热解法所制备的棒状B iSI纳米晶薄膜样品的介电特性和光吸收特性...采用改进的喷雾热解方法———异步脉冲超声喷雾热解法(APUSP),以B iC l3、硫脲和碘溶液为前驱液,在非晶衬底上成功地制备了B iSI纳米棒阵列薄膜.对采用异步脉冲超声喷雾热解法所制备的棒状B iSI纳米晶薄膜样品的介电特性和光吸收特性进行了测试.结果表明,采用该法所制备的棒状纳米结构薄膜与传统喷雾热解法所制备的薄膜,由于结构的不同,其介电特性和可见光吸收特性具有明显的区别.该方法与传统喷雾热解法相比,所制备的纳米晶薄膜具有较高的介电常数、较小的介电损耗和较大的光吸收强度.展开更多
Well defined BiOI nanolamellas and BiSI nanorods have been synthesized by a solventless method. The phase identity, morphology, growth orientation, and conversion from lamella to rod have been investigated. Several ex...Well defined BiOI nanolamellas and BiSI nanorods have been synthesized by a solventless method. The phase identity, morphology, growth orientation, and conversion from lamella to rod have been investigated. Several experimental facts suggest that the growth orientations of BiOI nanolamellas and BiSI nanorods are guided by their corresponding crystal structure motifs. The optical band gaps of BiOI and BiSI are measured to be 1.97 and 1.61 eV, and the visible light photocatalytic activity of BiOI lamellas is primarily measured.展开更多
文摘采用改进的喷雾热解方法———异步脉冲超声喷雾热解法(APUSP),以B iC l3、硫脲和碘溶液为前驱液,在非晶衬底上成功地制备了B iSI纳米棒阵列薄膜.对采用异步脉冲超声喷雾热解法所制备的棒状B iSI纳米晶薄膜样品的介电特性和光吸收特性进行了测试.结果表明,采用该法所制备的棒状纳米结构薄膜与传统喷雾热解法所制备的薄膜,由于结构的不同,其介电特性和可见光吸收特性具有明显的区别.该方法与传统喷雾热解法相比,所制备的纳米晶薄膜具有较高的介电常数、较小的介电损耗和较大的光吸收强度.
基金Financially supported by the National Natural Science Foundation of China (20773130, 20803080)973 Program (2009CB939801)the "Key Project from Fujian Institute" (SZD07004)
文摘Well defined BiOI nanolamellas and BiSI nanorods have been synthesized by a solventless method. The phase identity, morphology, growth orientation, and conversion from lamella to rod have been investigated. Several experimental facts suggest that the growth orientations of BiOI nanolamellas and BiSI nanorods are guided by their corresponding crystal structure motifs. The optical band gaps of BiOI and BiSI are measured to be 1.97 and 1.61 eV, and the visible light photocatalytic activity of BiOI lamellas is primarily measured.
