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以电解钴、硝酸和尿素为原料,在超声波辐照下,采用均相沉淀-煅烧工艺合成了纳米Co3O4,并对沉淀条件、煅烧温度以及前驱体组成等进行了研究.研究表明,超声波作用可以明显降低前驱体及Co3O4的粒径;所得产物粒子近似为球形,平均粒径为20nm左右.本文首次报道了在常压沸点温度(102±1)℃下通过均相沉淀法获得的前驱体的XRD图谱,并根据TG-DTG、XRD、FTIR以及化学分析确定了其化学组成为CoO3·2Co(OH)21.5H2O.XRD物相分析证明,该前驱体可在200℃以上经3h煅烧转变成立方晶相Co3O4,从而大大节省了热能.TG-DTG分析还表明,前驱体转变为Co3O4时分解和氧化同步进行.

参考文献

[1] Gastner G;Watson P R;Chan I Y .[J].Physical Chemistry,1989,93:3188.
[2] Jimenez M;Fernandez A;Espinos J P et al.[J].Electron Spectronsc Relat Phenom,1995,71:61.
[3] Gabr M;Girdis M M;Al-Awad A M .[J].Materials Chemistry and Physics,1991,28:413.
[4] Mehandjiev D;Panayotov D;Tuliev G et al.[J].Applied Catalysis B:Environmental,1995,5:199.
[5] Srivastava DN.;Perkas N.;Seisenbaeva GA.;Koltypin Y.;Kessler VG. Gedanken A. .Preparation of porous cobalt and nickel oxides from corresponding alkoxides using a sonochemical technique and its application as a catalyst in the oxidation of hydrocarbons[J].Ultrasonics sonochemistry,2003(1):1-9.
[6] Christoskova S T G;Stoyanova M;Georgieva M et al.[J].D Mater Chem Phys,1999,60:39.
[7] Duffie J A;Beckman W A.Solar Engineering of Thermal Processes[M].Wiley, New York,1980
[8] Linden D.Handbook on Batteries[M].McGraw-Hill, New York,1995
[9] Jinsik Myoung;Youngwoo Jung;Jaeyoung Lee et al.[J].Journal of Power Sources,2002,112:639.
[10] Kadam LD.;Patil PS.;Pawar SH. .Studies on ionic intercalation properties of cobalt oxide thin films prepared by spray pyrolysis technique[J].Materials Chemistry and Physics,2001(1/3):280-282.
[11] Srinivasan;Weidner V W .[J].Journal of the Electrochemical Society,1997,144:210.
[12] Cook J G;Van Der Meer;M P .[J].Thin Solid Films,1986,144:144-165.
[13] Chidambaram K;Malhotra L K .Chopra K L[J].Thin Solid Films,1982,87:365.
[14] G E McDonald .[J].Solar Energy,1975,17:119.
[15] 李亚栋,贺蕴普,李龙泉,钱逸泰.液相控制沉淀法制备纳米级Co3O4微粉[J].高等学校化学学报,1999(04):519-528.
[16] Matijevic E .[J].Chemistry of Materials,1993,5:412.
[17] Wang L F;Sondi I;Matijevic E .[J].Journal of Colloid and Interface Science,1999,218:1559.
[18] Akinc M;Mjongen N;Lemaitre J et al.[J].Journal of the European Ceramic Society,1998,18:1559.
[19] Suslic0k K S;Choe S B;Cichowlas et al.[J].Nature,1991,353:414.
[20] 谭俊茹,韩云芳,侯文祥,陈秀增,张丽莉.湿法制备钴蓝颜料中尿素水解行为的研究[J].天津大学学报(自然科学与工程技术版),2002(03):340-344.
[21] 张绍岩,丁士文,刘淑娟,康全影,刘燕朝,丁宇.均相沉淀法合成纳米ZnO及其光催化性能研究[J].化学学报,2002(07):1225-1229.
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