CAJ | 학술논문

采用回流法合成了BiPO4纳米棒光催化剂,探讨了反应时间、反应物比例、pH值和反应物浓度对BiPO4晶相结构和形貌尺寸的影响,利用粉末X射线衍射(XRD)、透射电镜(TEM)、比表面积分析(BET)和紫外-可见漫反射光谱(UV-Vis DRS)等对产物进行了表征,以亚甲基蓝(MB)为探针研究了其光催化活性.反应时间和反应物浓度对产物的形貌尺寸影响较大,反应物比例和pH值对产物晶相结构和形貌尺寸均有较大的影响,进一步影响BiPO4光催化剂的活性.调控各种因素后可合成出具有单斜相独居石/六方相混晶结构的高紫外光活性BiPO4纳米棒光催化剂.
채용회류법합성료BiPO4납미봉광최화제,탐토료반응시간、반응물비례、pH치화반응물농도대BiPO4정상결구화형모척촌적영향,이용분말X사선연사(XRD)、투사전경(TEM)、비표면적분석(BET)화자외-가견만반사광보(UV-Vis DRS)등대산물진행료표정,이아갑기람(MB)위탐침연구료기광최화활성.반응시간화반응물농도대산물적형모척촌영향교대,반응물비례화pH치대산물정상결구화형모척촌균유교대적영향,진일보영향BiPO4광최화제적활성.조공각충인소후가합성출구유단사상독거석/륙방상혼정결구적고자외광활성BiPO4납미봉광최화제.
BiPO4 nanorods were synthesized by reflux, and the effect of reaction time, reactant ratio and concentration, and pH value on BiPO4 crystal structure and morphology was investigated. Nanorods were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), specific surface area analysis (BET), and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The ability of BiPO4 to photo-degrade methylene blue (MB) was investigated. The reaction time and reactant concentration influenced the product morphology. The reactant ratio and pH value had a large effect on the product crystal structure and morphology, and also on the photo-activity of BiPO4. Highly UV active BiPO4 nanorods of monoclinic monazite/hexagonal mixed crystal structure suitable for photocatalysis could be prepared by careful y control ing the above conditions.