CAJ | 학술논문

采用改进的溶胶-凝胶法在低温制备了Sn-TiO2/聚噻吩纳米杂化材料(SPNH)，运用X射线衍射(XRD)、扫描电镜、X射线光电子能谱(XPS)、红外光谱(IR)、紫外-可见光漫反射光谱(UV-DRS)和BET比表面积分析对所制样品进行了表征。 XRD结果证实聚噻吩(PTh)对TiO2晶相结构没有影响。 IR和UV-DRS结果表明，在掺杂的金属氧化物与PTh的纳米杂化和结合过程中， PTh表面与金属氧化物之间存在相互作用(类似核壳结构)。 XPS结果显示，纳米杂化材料中存在Sn4+以及PTh与TiO2各自所含的元素。催化剂表面吸附污染物结果发现， SPNH的吸附容量高于Sn-TiO2纳米粒子(STN)。在可见光下降解有机污染物硝基苯(NB)和孔雀绿(MG)的反应中， SPNH表现出比单纯STN更高的光催化活性和稳定性。由于STN上存在聚噻吩，使得样品表面吸附NB(24%)和MG(21%)的能力增加，从而导致更高的光催化收率。考察了该光催化剂在可见光下重复使用5次时的光催化活性，未见PTh的消耗和降解。这些高光催化活性的SPNH材料有望在工业水净化中用作光催化剂。
채용개진적용효-응효법재저온제비료Sn-TiO2/취새분납미잡화재료(SPNH)，운용X사선연사(XRD)、소묘전경、X사선광전자능보(XPS)、홍외광보(IR)、자외-가견광만반사광보(UV-DRS)화BET비표면적분석대소제양품진행료표정。 XRD결과증실취새분(PTh)대TiO2정상결구몰유영향。 IR화UV-DRS결과표명，재참잡적금속양화물여PTh적납미잡화화결합과정중， PTh표면여금속양화물지간존재상호작용(유사핵각결구)。 XPS결과현시，납미잡화재료중존재Sn4+이급PTh여TiO2각자소함적원소。최화제표면흡부오염물결과발현， SPNH적흡부용량고우Sn-TiO2납미입자(STN)。재가견광하강해유궤오염물초기분(NB)화공작록(MG)적반응중， SPNH표현출비단순STN경고적광최화활성화은정성。유우STN상존재취새분，사득양품표면흡부NB(24%)화MG(21%)적능력증가，종이도치경고적광최화수솔。고찰료해광최화제재가견광하중복사용5차시적광최화활성，미견PTh적소모화강해。저사고광최화활성적SPNH재료유망재공업수정화중용작광최화제。
A Sn-doped TiO2/polythiophene nanohybrid (SPNH) was synthesized by a modified sol–gel process at low temperature. The prepared catalyst was characterized by X-ray diffraction (XRD), infrared (IR) spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV?Vis) diffuse reflectance spectrophotometry (UV-DRS), and Brunau-er-Emmett-Teller surface area analysis. The XRD results confirmed that polythiophene (PTh) had no effect on the crystal structure of TiO2. IR spectra and UV-DRS indicated that an interaction occurs between the interface of PTh and metal oxide in SPNH, and doped metal oxide nanoparticles were incorporated into PTh to form a core-shell structure. XPS analysis confirmed the presence of Sn4+and respective elements of PTh and TiO2 in SPNH. SPNH displayed higher adsorption capacities for pollutants than Sn-doped TiO2 nanoparticles (STN). In addition, SPNH exhibited higher photocata-lytic activity and stability than STN towards the degradation of organic pollutants nitrobenzene (NB) and malachite green (MG) under visible-light irradiation. Because of the presence of PTh on STN, there was an increase in the adsorption of NB (24%) and MG (21%) on the surface of SPNH, which led to a higher photocatalytic yield. The recyclability of the photocatalytic activity for the photocatalyst was examined by about five runs and not found any depletion or degradation of PTh under visible light irradiation. The high photocatalytic activity of SPNH makes it an attractive can-didate as a photocatalyst for industrial water purification.