本文選題：氧化鋅 + 鎢酸鉍��； 參考：《安徽師范大學(xué)》2017年碩士論文

【摘要】：半導(dǎo)體基納米復(fù)合結(jié)構(gòu)通過(guò)促進(jìn)界面電荷轉(zhuǎn)移過(guò)程、增進(jìn)電荷分離提供一條調(diào)節(jié)半導(dǎo)體光催化劑性能的有效途徑。本論文旨在通過(guò)化學(xué)液相方法合成無(wú)機(jī)半導(dǎo)體基納米復(fù)合結(jié)構(gòu),利用結(jié)構(gòu)誘導(dǎo)增進(jìn)光催化降解有機(jī)染料活性。本論文主要合成了ZnO納米棒/SrTiO_3介孔納米片、納米片組成的花狀Bi_2WO_6/Ag納米粒子、介孔納米片組成的花狀SrTi O_3/Ag納米粒子納米復(fù)合結(jié)構(gòu)材料,并對(duì)合成的納米復(fù)合結(jié)構(gòu)光催化降解有機(jī)染料性能進(jìn)行了詳細(xì)的研究。本論文主要內(nèi)容和結(jié)果歸納如下:1.以1.6-己二胺作為配位劑,利用化學(xué)液相沉積和后續(xù)煅燒方法合成ZnO納米棒/SrTiO_3介孔納米片陣列納米結(jié)構(gòu)。由于ZnO和SrTiO_3界面電荷的相互轉(zhuǎn)移,ZnO納米棒/SrTiO_3介孔納米片復(fù)合結(jié)構(gòu)紫外光催化降解有機(jī)染料羅丹明B和甲基橙活性比ZnO納米棒顯著提高。2.以1.6-己二胺作為配位劑,溶劑熱合成納米片組成的花狀Bi_2WO_6。進(jìn)一步以抗壞血酸為還原劑,在冰浴條件下,使Ag納米粒子沉積在Bi_2WO_6納米片上獲得納米片組成的花狀Bi_2WO_6/Ag納米粒子復(fù)合結(jié)構(gòu)。由于Ag納米粒子的等離子效應(yīng),增進(jìn)可見(jiàn)光吸收并促進(jìn)Bi_2WO_6表面的光生電子-空穴對(duì)的分離,使納米片組成的花狀Bi_2WO_6/Ag納米粒子復(fù)合結(jié)構(gòu)光催化降解有機(jī)染料活性顯著增強(qiáng)。3.通過(guò)化學(xué)液相沉積和后續(xù)煅燒獲得介孔納米片組成的花狀SrTiO_3結(jié)構(gòu)。進(jìn)一步用室溫液相沉積法獲得介孔納米片組成的花狀SrTiO_3/Ag納米粒子復(fù)合納米結(jié)構(gòu)�；贏g納米粒子的等離子效應(yīng),介孔納米片組成的花狀SrTiO_3/Ag納米粒子復(fù)合結(jié)構(gòu)可見(jiàn)光催化降解甲基橙活性顯著提高。此外,由于高度均勻分散的Ag納米結(jié)構(gòu),所合成的SrTiO_3/Ag復(fù)合納米結(jié)構(gòu)能夠高效催化還原4-硝基苯酚。
[Abstract]:Semiconductor based nanocomposites provide an effective way to regulate the performance of semiconductor photocatalysts by facilitating the interfacial charge transfer process and enhancing charge separation. The aim of this thesis is to synthesize inorganic semiconductor based nanocomposites by chemical liquid phase method and to improve the photocatalytic degradation of organic dyes by structure induction. In this thesis, ZnO nanorods / SrTiO3 mesoporous nanostructures, flower-like Bi_2WO_6/Ag nanoparticles, mesoporous SrTi O_3/Ag nanocrystalline nanocomposite materials were synthesized. The photocatalytic degradation of organic dyes with nanocomposite structure was studied in detail. The main contents and results of this thesis are summarized as follows: 1. The nanostructures of ZnO nanorods / SrTiO3 mesoporous nanoarrays were synthesized by chemical liquid deposition and subsequent calcination with 1.6- hexanediamine as the coordination agent. Due to the interfacial charge transfer between ZnO and SrTiO_3, the photocatalytic degradation of organic dyes Rhodamine B and methyl orange by UV photocatalytic degradation was significantly higher than that of ZnO nanorods. Using 1.6- hexane diamine as the coordination agent, the flower-like Bi2WOs _ 6 was synthesized by solvothermal synthesis. Furthermore, using ascorbic acid as reducing agent, Ag nanoparticles were deposited on Bi_2WO_6 nanoparticles in ice bath to obtain the flower-like Bi_2WO_6/Ag nanoparticles composite structure. Due to the plasma effect of Ag nanoparticles, the absorption of visible light and the separation of photogenerated electron-hole pairs on the surface of Bi_2WO_6 were enhanced, and the photocatalytic degradation activity of organic dyes was significantly enhanced by the flower-like Bi_2WO_6/Ag nanoparticles. The flower-like SrTiO_3 structure of mesoporous nanoparticles was obtained by chemical liquid deposition and subsequent calcination. Furthermore, the flower-like SrTiO_3/Ag nanostructures composed of mesoporous nanoparticles were obtained by liquid deposition at room temperature. Based on the plasma effect of Ag nanoparticles, the catalytic activity of mesoporous SrTiO_3/Ag nanoparticles for methyl orange degradation by visible light was improved significantly. In addition, due to highly uniformly dispersed Ag nanostructures, the synthesized SrTiO_3/Ag nanostructures can efficiently catalyze the reduction of 4-nitrophenol.
【學(xué)位授予單位】：安徽師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：O643.36;O644.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 李家德;余長(zhǎng)林;方穩(wěn);朱麗華;周晚琴;樊啟哲;;異質(zhì)結(jié)構(gòu)AgCl/Bi_2WO_6微米球制備、表征及其光催化性能（英文）[J];催化學(xué)報(bào);2015年07期

2 劉婧文;俞英;吳建中;陳幗敏;;手性化合物組合修飾劑對(duì)CdSe納米晶熒光性能的影響及標(biāo)記大腸桿菌的研究[J];無(wú)機(jī)化學(xué)學(xué)報(bào);2011年10期

，

本文編號(hào)：1833425