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中文摘要：
采用CTMAB／正丁醇／正庚烷／水四元反相胶束介质体系中直接沉淀法制备纳米CdS．采用不同ω（[H2O]／[表而活性剂]）条件制备的CdS光催化活性有所不同，当甜值为25时，所制备的纳米CdS光催化活性最高．利用X射线衍射仪（XRD）、透射电镜（TEM）对CdS的品型、尺寸进行表征、结果显示，反相胶束法制备的CdS为立方闪锌矿型，甜值为25条件下制备的CdS甲均粒径为9nm，且分散均匀．采用循环伏安法（CV）和电化学交流阻抗法（EIS）研究了纳米CdS的电化学行为，表明反相胶束法水量条件直接影响所制备的CdS粒径大小及电化学性质．在可见光照射F（九≥420nm），光催化降解孔雀绿（Malachite Green，MG）为探针反应，探讨了不同反相胶束体系的制各条件对CdS光催化活性的影响，通过紫外-可见光谱（UV-Vis）和总有机碳仪（xoc）对光催化降解MG跟踪测定，表明可见光照射下以水量25制备的CdS中性条件卜在70min内町以使MG褪色完全，反戍30h后MG的矿化率达50％以上，同时跟踪测定了降解过程中H2O2和羟基自由基（·OH）的变化，表明CdS光催化机理涉及到·OH历程．
英文摘要：
Cadmium sulfide（CdS） nanoparticles with efficient photocatalytic activity were synthesized using water/CTMAB/n-bntyl alcohol/n-heptanes reverse micelle system. The particles exhibited various photocatalytic activities with the different co values （co = [Water]/[CTMAB] = 25, 35, 50）, and the optimal co value was 25. Based on the X-ray diffraction （XRD） and transmission electron microscope （TEM） analysis, CdS nanoparticles were ascribed to the cubic sphalerite and the average size of CdS particle （ω=25） was about merely 9nm. Moreover, the o9 values could directly affect the particle size and electrical property of CdS nanoparticles by means of cyclic voltamrnetry （CV） and electrochemical impedance spectroscopy （EIS）. Under visible light （2〉420nm） irradiation, Malachite Green （MG） was used as a probe to investigate the effect of preparation conditions on photocatalytic activity of CdS nanoparticles. It can be concluded that MG could fade out within 70min and attain the 50% mineralization after 30h under visible light irradiation, and the degradation process mainly referred to the hydroxyl radical （-OH） and H2O2.
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