CAJ | 학술논문

以自制的谷氨酸-氟硼酸(GluBF4)离子液体水溶液为反应介质,以物质的量比为1∶6的二水合醋酸锌[Zn(Ac)2·2 H 2 O]和 NaOH 为原料,室温(25℃,20 min)制备前驱体,再微波辅助加热(80℃,10 min)制备了纳米氧化锌粉体,获得了纳米结构微米尺寸 ZnO 绒球。利用场发射扫描电子显微镜(FESEM)、X 射线衍射(XRD)、比表面积(BET)、能谱(EDS)等对产物进行了表征。结果表明,所得产物为六方晶系纤锌矿结构,粉体粒径20.4 nm,绒球比表面积为27.6 m2/g。该纳米材料具有较高的光催化降解有机污染物活性。以紫外光为光源,50 mg 微/纳米ZnO 绒球为光降解催化剂,取500 mL 北京雪莲羊绒股份有限公司排污口混合印染污水进行光降解实验,在30 min内光降解效率达到了100%,催化剂可回收重复利用,并对光降解机理进行了初步分析。
이자제적곡안산-불붕산(GluBF4)리자액체수용액위반응개질,이물질적량비위1∶6적이수합작산자[Zn(Ac)2·2 H 2 O]화 NaOH 위원료,실온(25℃,20 min)제비전구체,재미파보조가열(80℃,10 min)제비료납미양화자분체,획득료납미결구미미척촌 ZnO 융구。이용장발사소묘전자현미경(FESEM)、X 사선연사(XRD)、비표면적(BET)、능보(EDS)등대산물진행료표정。결과표명,소득산물위륙방정계섬자광결구,분체립경20.4 nm,융구비표면적위27.6 m2/g。해납미재료구유교고적광최화강해유궤오염물활성。이자외광위광원,50 mg 미/납미ZnO 융구위광강해최화제,취500 mL 북경설련양융고빈유한공사배오구혼합인염오수진행광강해실험,재30 min내광강해효솔체도료100%,최화제가회수중복이용,병대광강해궤리진행료초보분석。
Micro/nano ZnO with pomponlike shapes has been successfully synthesized by using Zn(Ac)2 ·2 H 2 O and NaOH (mole ratio 1∶6)as the raw materials and the glutamate fluoboric acid ionic liquid aqueous solution as the reaction medium at the room temperature (25 ℃,20 min)and then under microwave heating (80 ℃,10 min).The synthesized samples were characterized by field emission scanning electron microscopy combined with energy disperse X-ray analysis (SEM-EDS),X-ray powder diffraction (XRD)and the Brunauer-Emmett-Teller (BET)analysis.The product had hexagonal (wurtzite)structure, the particle size of the powder was about 20.4 nm,and the specific surface area of the pomponlike ZnO was 27.6 m2/g,with high activity on the photocatalytic degradation of organic pollutants.The photodegradation experiments were conducted on mixed printing and dyeing sewage (500 mL)from drain outlets of Beijing Snow-Lotus Cashmere Co.,Ltd.,with ultraviolet light as the light source and 50 mg of micro/nano ZnO pompons as the photodegradation catalyst,giving a photodegradation efficiency of 100% within 30 min.Besides that,the catalyst was reusable.The photodegradation mechanism were also discussed.