The reseach development of TiO2 photocatalysis technology was presented, and the mechanism of photocatalytic activity of nano-TiO2 was analyzed.

介紹了納米TiO2光催化技術(shù)的研究進(jìn)展亚洲自拍另类小说综合图区，分析了納米TiO2的光催化機(jī)理日本com，詳細(xì)論述了影響TiO2光催化活性的主要因素午夜影院三级。

The prepared powders were characterized by XRD, UV-Vis, FTIR, N_2 adsorption, Fluorescence spectroscopy, etc. N-doped TiO_2 evidently shows its absorbance shoulder shift into visible light region. Moreover, N-doping retards the transition of TiO_2 from anatase to rutile type as well as restrains the growth of the crystal size which leads to less decrease of surface area. These characteristics are considered to benefit the photoactivity of TiO_2; When all the samples were applied to the photodecomposition of Methylene Blue under visible light(λ＞400 nm), the N-doped TiO_2 show an obvious superiority when compared to the undoped TiO_2, the active hydroxyl groups are found to play a important role in this high photoactivity; When the same experiment was performed under UV light, all the samples show the consistent sequence of photoactivity as in the visible light.

通過UV-Vis免费啪啪黄色视频、XRD91av在线观看91、BET日本强伦奸人妻一区二区、IR、FL等表征手段測試表明：摻氮不僅使TiO_2的光吸收區(qū)域拓展到可見光區(qū)最新无码专区视频在线，而且有利于延緩TiO_2晶相的轉(zhuǎn)換印度AV在线网站，從而抑止了高溫煅燒下所引起的晶粒增大以及比表面積的降低，且氮源濃度越高欧美在线视频首页，此現(xiàn)象越明顯国产精品理论一区，這些特征都有利于催化劑光催化活性的提高；在主波長大于400nm的可見光催化亞甲基藍(lán)實驗當(dāng)中一级a作爱在线视频观看，摻氮TiO_2的光催化活性明顯優(yōu)越于未摻氮樣品人人干人人操人人上人人搞，亞甲基藍(lán)在90min內(nèi)達(dá)到88％的脫色率。

A new catalytic kinetic method with second derivative oscillopolarography detection for determining trace amounts of NO〓〓 has been developed. The method is based on the catalytic oxidation of Amarath by potassium bromide in the diluted H〓SO〓. The detection limit of the method is 2.8×10〓g/ml, the linear range of the determination 〓is 0.6～14ng/ml for NO〓.

首次研究了雞冠紅的示波極譜行為日韩一级A片在线高清视频，并發(fā)現(xiàn)NO〓〓在稀硫酸介質(zhì)中對KBrO〓氧化雞冠紅褪色反應(yīng)具有強(qiáng)的催化作用亚洲欧美在线等，本文采用兩階導(dǎo)數(shù)示波極譜法作監(jiān)測技術(shù)，測定了該催化體系的表觀反應(yīng)級數(shù)及動力學(xué)方程美女任人插黄色视频，建立了催化動力學(xué)伏安法測定痕量NO〓〓的新方法369超碰在线观看。

Results Same conservative sites and key catalytic sites existed among SjLDH and LDHs from other species. Similarity of SjLDH compared to CsLDH, TvLDH and HsLDH was 75%, 17%, 58%-60% respectively. Phylogenetic analysis demonstrated that the evolution relation between SjLDH and DmLDH was closer than the relation between SjLDH and CeLDH, the relationship between SjLDH and HsLDH-B,-C was closer than HsLDH-A. Three trans-membrane regions were found, the region of 98aa-106aa in three hydrophilia regions located outside of membrane was inferred as the major antigen epitope. This antigen epitope had significant difference with LDHs from protozoon （ Pf ., Tg ., Tv .） and had 1-3 amino acid residue difference with MmLDH, HsLDH-A,-B,-C, and was the same with CsLDH. One of the key catalytic residues and substrate binding loop were located in this region. Tertiary structure demonstrated that 98aa-106aa was on the surface of the protein and formed a substrate binding loop, other two key catalytic sites were at the position near the loop.

結(jié)果 SjLDH與其他物種的同源序列含相同的保守位點及催化活性位點，與華支睪吸蟲LDH同源性最高為75％午夜视频你懂的，與陰道毛滴蟲LDH同源性最低為17%www.99riav22，與人LDH（HsLDH-A，-B，-C）的同源性為58%~60％婷婷五月丁香在线； SjLDH與果蠅的進(jìn)化距離較秀麗隱桿線蟲為近国产在线观看www，3種人LDH中與HsLDH-B、-C的進(jìn)化距離較HsLDH-A為近亚洲欧美色图13p；該蛋白具有3個跨膜區(qū)域亚洲91在线综合，3個高親水性區(qū)域，主要的線性表位98aa~106aa位于膜外国产综合视频网，與原蟲LDH相同區(qū)域差異顯著一级毛片在我的世界免费网站视频，而與其他LDH有1~3個氨基酸的差異，關(guān)鍵催化位點之一及底物丙酮酸結(jié)合區(qū)域位于該區(qū)域亚洲第一区在线观看，蛋白質(zhì)同源模建分析表明該區(qū)域位于蛋白表面形成環(huán)狀結(jié)構(gòu)黄色色色费一八，3個關(guān)鍵催化位點位于該區(qū)域或在其附近。

It has been observed that pyrocatechol and m-phenylenediamin can sensitively inhibit the discoloration of neutral red oxidation by the H2O2 and in the presence of catalyzer Fe in dilute sulfuric acid solution but the inhibitory effects of two organic compounds can not be added. Based on this research, the advantages of artificial neural network were adopted to handle the experimental data and a new inhibitory kinetic spectrophotometry of simultaneous determination for pyrocatechol and m-phenylenediamin with artificial neural networks was established.

在硫酸性介質(zhì)中亚洲高清无码91，F(xiàn)e能夠催化H2O2氧化中性紅褪色反應(yīng)精品欧美性爱之吧，鄰苯二酚和間苯二胺都能阻抑該催化氧化褪色反應(yīng)的速度，研究發(fā)現(xiàn)：兩者對Fe催化H2O2氧化中性紅褪色反應(yīng)阻抑作用不具有加和性制服丝袜人中文字幕，根據(jù)這一現(xiàn)象久久不卡黄色视频，用人工神經(jīng)網(wǎng)絡(luò)處理非線性體系的優(yōu)勢進(jìn)行數(shù)據(jù)處理，從而建立了一種新的測定鄰苯二酚和間苯二胺混合物的人工神經(jīng)網(wǎng)絡(luò)阻抑動力學(xué)光度法www.欧美.com。

Mechanism of catalyzed oxidation of SO2 with pyrolusite suggested that the process was combined catalysis in the presence of Mn and Fe both in solution and solid.

軟錳礦催化脫硫的機(jī)理分析表明超碰97乱伦，過程是液相Mn、Fe協(xié)同催化與固相催化作用相結(jié)合性爱午夜视频。

A simple and highly sensitive new kinetic catalytic fluorimetric method was proposed for the determination of trace chromium,based on the catalytic effect of trace amounts of chromium on the oxidation of Pyronine Y by hydrogen peroxide in acetic acid-sodium acetate buffer medium leading to a decrease in the fluorescence intensity.

在HAc-NaAc緩沖體系中成人播放日韩在线观看网站视频下载，痕量鉻對過氧化氫氧化吡咯紅 Y的氧化還原反應(yīng)有催化作用，使吡咯紅 Y熒光減弱好妞在线三级片，據(jù)此建立了催化熒光法測定痕量鉻的新方法超碰首页，同時考察了該催化反應(yīng)的最優(yōu)條件及動力學(xué)性質(zhì)。

By photo-catalysis experiment test the reactiveness of TiO2 particle as photocatalyst, which is prepared in our lab. By compared with the one that is bought from Germany, we can know the ratio of reactiveness of it against the one from Germany is about 74%.

在光催化實驗中99久久久国产一区二区三区，檢驗了本實驗室產(chǎn)二氧化鈦粉體的光催化活性下载黄色一级网站视频，可知其在苯酚降解中的光催化效率達(dá)到德國產(chǎn)粉體的74％左右。

In this paper, the effects of different catalyst combinations on the synthesis of α-chloro-dodecanoic acid were investigated, in which a series of acyl chlorides such as 4-toluene sulfonyl chloride, dodecanoyl chloride, chlorosulphonic acid , etc.

本文從烯酮式反應(yīng)機(jī)理出發(fā)欧美大屌插逼，以α-氯代十二酸的合成為模型999久久久免费精品播放，對酰氯化試劑(對甲苯磺酰氯、十二酰氯黄片在线浏览器、氯磺酸等)和質(zhì)子酸催化劑(如H型離子交換樹脂免费A级毛片视频网站、氯磺酸、對甲苯磺酸aaa黄色视频aaa、醋酸等)進(jìn)行組合和選擇一级毛片一级毛毛片免费看，并與文獻(xiàn)報道的特殊添加劑乙酐比較欧美第一黄片，研究不同催化體系在酸催化合成α-氯代脂肪酸時的催化作用。

It has offered the information of the boiling points of the chemical compounds, and it is helpful to reutilize them after their separation by rectification. The results showed that the main compounds of the heavy cut of terpineol were longifolene and βcaryophyllene. They are from the raw material, terpinene oil.

松油醇的合成工藝方法主要有兩種：一種是一步法色无码夫妻在线，即松節(jié)油在酸催化作用下直接進(jìn)行水合反應(yīng)生成松油醇亚洲欧美另类中文字幕；另一種是二步法，即松節(jié)油首先在酸催化作用下水合成萜二醇国产精品亚洲精品专区，再經(jīng)稀酸催化脫水生產(chǎn)松油醇黄片毛片一级黄片。