CAJ | 학술논문

以钛酸丁酯为主要原料，利用胶溶-回流的方法在碳纳米管（CNT）表面制备了纳米 TiO2。通过扫描电子显微镜（SEM）、透射电子显微镜（ TEM）观察了纳米 TiO2／碳纳米管（ CNT）复合颗粒的形貌特征，X 射线光电子能谱（ XPS）分析显示复合颗粒表面存在 Ti—O及—OH 基团，Ti2p3／2和 Ti2p1／2电子结合能差约为5．7eV。以 TNT溶液为目标降解物，研究了复合颗粒的光催化性能，建立了吸附降解的动力学模型，结果表明 TiO2／CNT复合颗粒对 TNT溶液的光催化降解符合一级反应动力学方程，在实验范围内降解速率随着 TNT溶液初始浓度的增加而增加，降解动力学关系较好地遵循 L-H 模型。
이태산정지위주요원료，이용효용-회류적방법재탄납미관（CNT）표면제비료납미 TiO2。통과소묘전자현미경（SEM）、투사전자현미경（ TEM）관찰료납미 TiO2／탄납미관（ CNT）복합과립적형모특정，X 사선광전자능보（ XPS）분석현시복합과립표면존재 Ti—O급—OH 기단，Ti2p3／2화 Ti2p1／2전자결합능차약위5．7eV。이 TNT용액위목표강해물，연구료복합과립적광최화성능，건립료흡부강해적동역학모형，결과표명 TiO2／CNT복합과립대 TNT용액적광최화강해부합일급반응동역학방정，재실험범위내강해속솔수착 TNT용액초시농도적증가이증가，강해동역학관계교호지준순 L-H 모형。
By using tetra-butyl titanate as raw material ,TiO2/CNT composite particles were prepared by peptization- reflux meth-od. Morphology of the samples was observed by scanning electron microscope( SEM ) and transmission electron microscope (TEM). X-ray Photoelectron Spectroscopy(XPS)analysis show that Ti-O and —OH groups exist on the surfaces of TiO2/CNT composite particles,and the difference between binding energies of Ti2p3/2 and Ti2p1/2 is about 5. 7 eV. The photo-catalytic activi-ty of composite particles was studied,and a degradation kinetic model was established by using TNT waste water as target pollu-tant. Results show that the process of degradation reaction accords with one order reaction kinetics equation. The degradation rate increases with the increase of the initial concentration of TNT in the experimental range,and the kinetic data match well with the L-H model.