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The following main results are obtained: The TiO_2 photocatalyst with small crystallite size, high surface area, narrow and uniform pore size distribution, and microporous frameworks could be prepared out by applying MW radiation in the preparation process. The microwave-induced fluorescence technique verified for the first time that microwave enhanced the formation rate of hydroxyl radical, leading to the increase in the photocatalytic efficiency. Compared with the conventional catalyst, TiO_2 prepared by MW dielectric heating owns a higher UV absorption ability, and its optical absorption edge and photovoltaic response are shifted toward the short wavelength region, resulting in increase of photooxidation efficiency. The photocatalytic conversion and the mineralization ratio of acetaldehyde are increased respectively by 30% and 40% over the TiO2 prepared by MW radiation when compared to the TiO2 prepared by the conventional heating. For the MW-assisted photocatalytic reaction over the MW-prepared TiO2, production of hydroxyl radicals is enhanced by 22.5%, and the photocatalytic conversion is accordingly increased by 20%. Similarlly, applying MW also increased the photocatalytic conversion and the mineralization ratio of acetaldehyde over TiO2/Al2O3 sample.

論文得到如下主要結(jié)果和結(jié)論：(1)微波介電加熱TiO_2 溶膠可得到晶粒度小精品人妻系列无码专区不卡、光催化活性高日日爱的黄色视频、比表面積大和孔徑分布窄而均一亚洲性爱视频91，且微孔發(fā)達的TiO_2光催化劑；在溶膠干燥處理過程中微波可使催化劑表面缺陷增加午夜性爱熟妇青青乐园，進而導(dǎo)致光催化反應(yīng)過程有更多的活性羥基自由基產(chǎn)生国产激情无码一区二区app；(2)微波制備能顯著增強TiO_2 樣品的紫外光吸收率，并使其光吸收和光伏響應(yīng)閾值發(fā)生藍移igao视频在线观看，從而提高TiO_2的氧化還原能力人人艹人人看人人艹人人看；(3)與常規(guī)加熱法所制TiO_2比較，微波法制備的TiO_2對乙醛的光催化降解轉(zhuǎn)化率提高30%女人帮男人橹的视频网站，CO_2生成率提高40%以上chao碰；(4)與未加微波輻射時相比，發(fā)現(xiàn)在光催化反應(yīng)過程中施加微波一级婬片A片免费播放视频，TiO_2 的羥基自由基生成速率提高了22.5%日韩在线电影网中文字幕，相應(yīng)CH_3CHO 光催化降解轉(zhuǎn)化率提高了20%；對Al_2O_3/TiO_2催化劑欧美性爱片网站，CH_3CHO 光催化降解轉(zhuǎn)化率甚至提高了33%黄色网站视频污污污黄色，同時CO_2 的生成率也都大幅度提高；(5)微波輻射可改變光催化降解乙醛的產(chǎn)物分布亚洲性爱区第一页，推斷施加微波時乙醛光催化降解按照羥基自由基引發(fā)的鏈?zhǔn)椒磻?yīng)機理進行九色视频自拍，微波&非熱效應(yīng)&起主要作用。

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