CAJ | 학술논문

以氯化锌、氯化镉、氢氧化钠为原料，采用水热法合成Cd掺杂纳米花状ZnO光催化剂，并通过该样品对罗丹明B水溶液的降解来研究其光催化活性。利用X射线衍射（XRD）、扫描电子显微镜（SEM）、X射线能量色散谱（EDS）、光致发光谱（ PL）及紫外-可见分光光度计（ UV-Vis）等测试手段对材料物性进行表征。实验结果表明：当掺杂Cd2＋时，样品形貌发生变化、粒径减小；掺杂Cd2＋后的ZnO的吸收边和紫外峰对比于纯ZnO均发生红移，禁带宽度由3.24 eV 减小到3.16 eV。通过光催化实验分析可知，掺杂后纳米ZnO光催化剂对罗丹明B 水溶液的降解率有所提高，光照3 h其降解率高达98％，说明与纯ZnO相比，Cd掺杂ZnO纳米花具有更高的光催化活性。
이록화자、록화력、경양화납위원료，채용수열법합성Cd참잡납미화상ZnO광최화제，병통과해양품대라단명B수용액적강해래연구기광최화활성。이용X사선연사（XRD）、소묘전자현미경（SEM）、X사선능량색산보（EDS）、광치발광보（ PL）급자외-가견분광광도계（ UV-Vis）등측시수단대재료물성진행표정。실험결과표명：당참잡Cd2＋시，양품형모발생변화、립경감소；참잡Cd2＋후적ZnO적흡수변화자외봉대비우순ZnO균발생홍이，금대관도유3.24 eV 감소도3.16 eV。통과광최화실험분석가지，참잡후납미ZnO광최화제대라단명B 수용액적강해솔유소제고，광조3 h기강해솔고체98％，설명여순ZnO상비，Cd참잡ZnO납미화구유경고적광최화활성。
The flower-like Cd-doped ZnO nanostructures were synthesized by hydrothermal method using zinc chloride(ZnCl2), cadmium chloride(CdCl2), sodium hydroxide(NaOH) as reactants.Then, the photocata-lytic activities of as-grown samples were investigated by photo-degradation of rhodamine B(RhB).The sam-ples were characterized by X-ray diffraction(XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis(EDS), photoluminescence(PL) spectroscopy, UV-visible spectroscopy.Experimental results show that with the Cd doping , the morphologies of ZnO changed greatly , and the size of ZnO became smaller . In addition, compared with the undoped ZnO , the absorption edge and the UV emission peak of the Cd-doped ZnO nanoflowers made a red shift clearly .The band gap decreased from 3.24 eV to 3.16 eV.Finally, in the photocatalytic experiment , the photocatalytic activity of Cd-doped ZnO was enhanced , and the degradation of rhodamine B(RhB) was up to 98%after the irradiation for 3 h.So the photocatalytic activities of Cd-doped ZnO nanoflowers were higher than that of the undoped ZnO .