CAJ | 학술논문

以灰硒为起始硒源制备硒代硫酸钠饱和溶液，以聚乙烯吡咯烷酮为保护剂，加入到柠檬酸-柠檬酸钠缓冲溶液中，通过控制反应体系的pH值，最终制得纳米硒颗粒；采用透射电镜观察其表面形貌，并测试比表面积，分析pH值、反应温度、溶剂等对产物表面形貌的影响.结果表明：硒代硫酸钠与缓冲溶液体积2∶1、混合液pH值为5.1~5.6、PVP质量分数为1%时，室温条件下可获得粒径在50 nm左右的球形红色纳米硒.
이회서위기시서원제비서대류산납포화용액，이취을희필각완동위보호제，가입도저몽산-저몽산납완충용액중，통과공제반응체계적pH치，최종제득납미서과립；채용투사전경관찰기표면형모，병측시비표면적，분석pH치、반응온도、용제등대산물표면형모적영향.결과표명：서대류산납여완충용액체적2∶1、혼합액pH치위5.1~5.6、PVP질량분수위1%시，실온조건하가획득립경재50 nm좌우적구형홍색납미서.
Spherical selenium nanoparticles are synthesized by using sodium selenosulfate solution which is prepared by the gray selenium as the selenium source , adding PVP as protective agent in citric acid and sodium citrate buffer solution, and controlling pH value of reaction system. The specific surface area of selenium nanoparticles is tested, and surface topography is observed by TEM. The effects of pH value, reaction temperature and sol-vent on the morphology of selenium nanoparticle are discussed. The result shows that the particle size of seleni-um nanospheres obtained at room temperature is about 50 nm when the volume ratio of selenosulfate and buffer solution is 2∶1 , pH value of reaction system is 5.1-5.6, and the concentration of PVP is 1%.