CAJ | 학술논문

在柠檬酸钠和硝酸铝水溶液体系中,通过一步水热法制备了蜷缩刺猬状和核壳结构的AlOOH微球,并用x射线衍射(XRD)、Fourier变换红外(FTIR)光谱、扫描电镜(SEM)、透射电镜(TEM)、氮气吸脱附和光致发光等分析手段对制备的样品进行了形貌和结构表征.对反应时间、反应物浓度等影响因素进行了研究.实验结果表明:反应时间和反应物柠檬酸钠的浓度对所得AlOOH微球结构的尺寸和形貌具有重要影响;蜷缩刺猬状和核壳结构AlOOH微球都具有较大的比表面积,分别为171.5和178.6 m2·g-1;不同形貌的AlOOH具有不同的荧光发射峰.并初步探讨了核壳结构AlOOH微球的生长机制.
재저몽산납화초산려수용액체계중,통과일보수열법제비료권축자위상화핵각결구적AlOOH미구,병용x사선연사(XRD)、Fourier변환홍외(FTIR)광보、소묘전경(SEM)、투사전경(TEM)、담기흡탈부화광치발광등분석수단대제비적양품진행료형모화결구표정.대반응시간、반응물농도등영향인소진행료연구.실험결과표명:반응시간화반응물저몽산납적농도대소득AlOOH미구결구적척촌화형모구유중요영향;권축자위상화핵각결구AlOOH미구도구유교대적비표면적,분별위171.5화178.6 m2·g-1;불동형모적AlOOH구유불동적형광발사봉.병초보탐토료핵각결구AlOOH미구적생장궤제.
An experimental procedure is presented for the synthesis of crouching hedgehog-like and core/shell AlOOH microspheres by a one-step hydrothermal process in an aqueous solution of trisodium citrate at 200℃.The structure,morphology,purity and size of the products were characterized by several techniques such as X-ray diffraction(XRD),transmission electron microscopy(TEM),scanning electron microscopy(SEM),nitrogen adsorption/desorption measurement and photoluminescent(PL)analysis.The reaction time and concentrations of trisodium citrate influenced the final structures and shapes of the AlOOH microspheres.Brunauer-Emmett-Teller(BET)analyses revealed high values(171.5 possible formation mechanism of core/shell AlOOH microspheres is proposed and discussed based on the reaction dynamics process and the assisted growth process.The photoluminescent spectra of these nanostructures showed different emission bands and this difference might be because of their distinct sizes and morphologies.