1. 毕业设计(论文)主要目标:
本研究结合已有的文献报道,本实验以Bi (NO3)3和Na2WO4为原料,采用焙烧法合成了新型的Bi2WO6可见光催化剂样品,并以气态甲醛为目标降解物,探讨了不同药品比例、不同焙烧时间、是否陈化对催化剂催化活性的影响。测定各种催化剂催化甲醛浓度值,得到数据并进行画图分析。通过催化剂催化活性图对各种催化剂进行比较,为寻找廉价、高效的Bi2WO6可见光催化剂提供实践理论基础。
2. 毕业设计(论文)主要内容:
本实验以Bi (NO3)3和Na2WO4为原料,采用焙烧法合成了新型的Bi2WO6可见光催化剂样品,并以气态甲醛为目标降解物,探讨了不同药品比例、不同焙烧时间、是否陈化对催化剂催化活性的影响。
3. 主要参考文献
[1]刘守新,刘鸿.光催化及光电催化基础与应用[M],北京:化学工业出版社,2005,52. [2]张彭义,余刚,蒋展鹏.半导体光催化剂及其改性技术进展[J].环境科学进展,1997,5(3):1-10. [3]单志俊,邓慧萍,TiO2光催化氧化技术的研究进展[J].中国资源综合利用,2007,25(2):7-11. [4]Fujishima A,Honda K. Electrochemical Photoca-talysis of Water at a semiconductor Electrode[J].Nature,1972,238:37-38. [5]Asahi R , Morikawa T ,Ohwaki T , et al. Visib-lelight Photocatalysis in Nitrogen-doped TitaniumOxides[J ]. Science , 2001 ,293(5528) :269-2271. [6]Kudo A , Hijii S. H2or O2 Evolution Fromaqueous-solutions on Layered Oxide Photocatalysts Consis-ting of Bi3 with 6s2 Configuration and d0 Transition Metal Ions [J ]. Chem Lett, 1999 ,28 (10) :1103-1104. [7]Tang J W , Zou Z G, Ye J H. Photocatalytic Decomposition of Organic Contaminants by Bi2WO6 Undervisible Light Irradiation[ J ]. Catal Lett ,2004 ,92(2) :53-56. [8]Wu Ling , Bi Jinhong , Li Zhaohui , etal. RapidPreparationof Bi2WO6 Photocatalyst with NanosheetMorphology via Microwave-assisted SolvothermalSynthesis[J]. Catalysis Today , 2008 ,131 :15-20. [9]Zhang Chuan , Zhu Yongfa. Synthesis of SquareBi2WO6Nanoplates as High-Activity Visible-Light-Driven Photocatalysts[J]. Chem Mater , 2005 ,17(13) :3537-3545. [10]Fu Hongbo , Pan Chengshi , Yao Wenqing , et al.Visible-Light-Induced Degradation of Rhodamine B by Nanosized Bi2WO6 [J].J Phys Chem B ,2005 ,109(47) :22432-22439.
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