本文選題：銻基化合物 + 水熱法　； 參考：《福建師范大學(xué)》2015年碩士論文

【摘要】：本文利用微波水熱法和傳統(tǒng)水熱法制備得到多元銻基化合物光催化劑,通過多種表征手段探究其組成、結(jié)構(gòu)及性能的關(guān)系,具體內(nèi)容如下：以醋酸鍶和五氧化二銻為原料,利用水熱法合成Sr2Sb207和Sr1.36Sb2O6光催化劑。通過光催化活性評(píng)價(jià)確定二者最佳合成條件分別為：Sr2Sb2O7:前驅(qū)液[OH]=2mol·L-1,150℃水熱反應(yīng)24 h; Sr1.36Sb2O6:前驅(qū)液pH值為5,100℃水熱反應(yīng)24 h。在最佳合成條件下制得的Sr2Sb207光催化劑紫外光光照30 min對(duì)鹽酸四環(huán)素的降解率為99.7%;Sr1.36Sb2O6光催化劑紫外光光照180 min對(duì)鹽酸四環(huán)素的降解率為80.7%。二者的光催化活性差異的主要原因是Sb06八面體的畸變程度�；兊腟b06八面體所存在的偶極矩可誘導(dǎo)產(chǎn)生內(nèi)電場(chǎng),這種內(nèi)電場(chǎng)有助于光生電子空穴對(duì)的分離,從而提高其光催化的活性。以硝酸鉍和三氧化二銻為原料,通過微波水熱法和水熱法制備了BiSbO4光催化劑,并通過光催化活性評(píng)價(jià)確定二者最佳合成條件分別為微波水熱法：前驅(qū)液pH值為5,合成溫度220。C下反應(yīng)90min；水熱法：前驅(qū)液pH值為1,合成溫度250oC下反應(yīng)24 h。BiSbO4具有優(yōu)異的紫外光光催化性能。水熱法制備的BiSbO4光催化劑光催化性能優(yōu)于微波水熱法所制備的光催化劑。影響二者活性差異的主要原因是結(jié)晶度及晶格的畸變程度。利用水熱法在最佳反應(yīng)條件下制備的BiSbO4光催化劑,紫外光光照90 min對(duì)MO的降解率達(dá)到了99.8%,60 min對(duì)鹽酸四環(huán)素的降解率達(dá)到100%。以硫代乙酰胺為硫源,硝酸鉍和五氧化二銻作為金屬前驅(qū)物,通過微波水熱法合成納米晶Bi0.76Sb1.24S3光催化劑,當(dāng)前驅(qū)液pH為5,在合成溫度為200℃下反應(yīng)60min制得的Bi0.76Sb1.24S3光催化劑活性最佳�？梢姽夤庹�60 min對(duì)MO的降解率達(dá)到99.3%,150 min對(duì)羥基偶氮苯的降解率達(dá)到86.2%。
[Abstract]:In this paper, multicomponent antimony based photocatalyst was prepared by microwave hydrothermal method and traditional hydrothermal method. The relationship among composition, structure and properties of the photocatalyst was investigated by various characterization methods. The main contents are as follows: strontium acetate and antimony pentoxide are used as raw materials.Sr2Sb207 and Sr1.36Sb2O6 photocatalysts were synthesized by hydrothermal method.The optimum conditions for their synthesis were determined by photocatalytic activity evaluation: the precursor solution [OH] 2mol / L -1150 鈩，

本文編號(hào)：1736223