摘要
采用超重力反应结晶法制备了纳米硫化锌粒子,并通过透射电子显微镜（TEM）、X射线粉末衍射仪（XRD）、X射线光电子能谱仪（XPS）、傅里叶红外光谱仪（FTIR）、紫外-可见光分光光度计（UV-Vis）和X射线能谱仪（EDX）对纳米硫化锌的形貌、结构、组成和光谱性能进行了细致分析。结果表明：超重力反应结晶法制备的纳米硫化锌粒子为球形,平均粒径为42 nm;XRD图谱表明纳米硫化锌呈现较好的闪锌矿晶型;XPS能谱表明纳米硫化锌的S（2p）的电子结合能为162.6 eV,Zn的2p3/2,2p1/2的电子结合能分别为1021.4,1044.6 eV。红外光谱研究表明纳米硫化锌在400-4000 cm^-1范围内具有良好的红外透过率。紫外-可见光谱研究发现纳米硫化锌在200-340 nm的紫外区域有较强的吸收,其禁带宽度为3.57 eV。EDX能谱表明该法制备的纳米硫化锌具有较高的纯度。
The nano-zinc sulfide was prepared in RPBR（rotating packed bed reactor） using zinc nitrate and hydrogen sulfide as the raw materials.The size and morphology, crystal structure,composition and optical properties of the nano-zinc sulfide were analyzed by transmission electron microscopy（TEM）,X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS）,Fourier transform infrared spectrometry（FTIR）,UV-visible spectrophotometer and energy dispersive X-ray detector（EDX）.The results show that the nano-zinc sulfide particles are spherical and their average size is about 42 nm.The XRD pattern shows that the nano-zinc sulfide is in a good sphalerite crystal phase.The XPS spectra show that the binding energy of the S（2p） is 162.6 eV,while those of the Zn 2p3/2 and 2p1/2 are 1 021.4 and 1 044.6 eV respectively.The IR spectrum shows that the nano-zinc sulfide has good transmittance within the wavelength number range from 400 to 4 000 cm^-1.The UV-Vis spectrum shows that the nano-zinc sulfide has strong absorption within the wavelength range from 200 to 340 nm.The optical gap of the nano-zinc sulfide is 3.57 eV by calculation.The EDX spectrum shows that the nano-zinc sulfide has high purity.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2007年第9期1890-1893,共4页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(20236020)
教育部科学技术研究重大项目(重大0202)
新加坡纳米材料科技公司项目(S2001-04)资助
