广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
11期
23-24
,共2页
Cu2O/TiO2复合材料%纳米管阵列%恒电流法%异质结
Cu2O/TiO2複閤材料%納米管陣列%恆電流法%異質結
Cu2O/TiO2복합재료%납미관진렬%항전류법%이질결
Cu2O/TiO2 composition material%nanotube array%galvanostatic method%heterojunction
通过在含F-离子的电解液中阳极氧化Ti薄片基底制备了TiO2纳米管阵列,随后通过恒电流沉积的方法在在TiO2纳米管阵列顶部原位电沉积了Cu2O纳米颗粒。场发射电子扫描显微镜显示TiO2纳米管这列被成功制备,通过恒电流电化学沉积后,TiO2纳米管阵列顶部出现大量纳米颗粒物质,并且随着沉积时间的延长,可以控制沉积物的量。通过X-射线衍射谱的特征衍射谱图我们可以发现TiO2锐钛矿的衍射峰以及相对较弱的Cu2O衍射峰,这说明Cu2O晶体的结晶度不高。在能谱（EDS）图中我们可以发现Ti、Cu、O三种元素,结合XRD以及FE-SEM结果我们可以指出,通过恒电流法确实可以在TiO2纳米管阵列顶部原位沉积Cu2O纳米颗粒。
通過在含F-離子的電解液中暘極氧化Ti薄片基底製備瞭TiO2納米管陣列,隨後通過恆電流沉積的方法在在TiO2納米管陣列頂部原位電沉積瞭Cu2O納米顆粒。場髮射電子掃描顯微鏡顯示TiO2納米管這列被成功製備,通過恆電流電化學沉積後,TiO2納米管陣列頂部齣現大量納米顆粒物質,併且隨著沉積時間的延長,可以控製沉積物的量。通過X-射線衍射譜的特徵衍射譜圖我們可以髮現TiO2銳鈦礦的衍射峰以及相對較弱的Cu2O衍射峰,這說明Cu2O晶體的結晶度不高。在能譜（EDS）圖中我們可以髮現Ti、Cu、O三種元素,結閤XRD以及FE-SEM結果我們可以指齣,通過恆電流法確實可以在TiO2納米管陣列頂部原位沉積Cu2O納米顆粒。
통과재함F-리자적전해액중양겁양화Ti박편기저제비료TiO2납미관진렬,수후통과항전류침적적방법재재TiO2납미관진렬정부원위전침적료Cu2O납미과립。장발사전자소묘현미경현시TiO2납미관저렬피성공제비,통과항전류전화학침적후,TiO2납미관진렬정부출현대량납미과립물질,병차수착침적시간적연장,가이공제침적물적량。통과X-사선연사보적특정연사보도아문가이발현TiO2예태광적연사봉이급상대교약적Cu2O연사봉,저설명Cu2O정체적결정도불고。재능보（EDS）도중아문가이발현Ti、Cu、O삼충원소,결합XRD이급FE-SEM결과아문가이지출,통과항전류법학실가이재TiO2납미관진렬정부원위침적Cu2O납미과립。
A series of Cu2O/TiO2 composite nanotube array p-n heterojunction photo-electrodes were prepared by electrochemical anode oxidation Ti substrate in F-ions contained electrolyte,subsequently the as-prepared TiO2 nanotube array was electro-deposited in a copper lactate complex electrolyte with different times.The field-emission scanning electron microscopy show that the TiO2 nanotube array was prepared successfully,and some other nanoparticles can deposition on the top surface of the TiO2 nanotube array,meanwhile,the mass of nanoparticles can adjustment by varying electrodeposition time.In the X-ray diffraction(XRD) peak patterns,we can find out the characteristic peaks of TiO2 and Cu2O crystals.However the characteristic diffusion intensity of Cu2O is very weaker than TiO2,it is indicate that the crystallinity of the as-deposition Cu2O semiconductor is not high enough.In the Energy Dispersive Spectrometer(EDS),we can figure out the elements of Ti,Cu,O.Combine with the XRD and FE-SEM results,at last,we can point out that the Cu2O was deposited on the top of TiO2 nanotube array successfully by galvanostatic method.
