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Synthesis of Hierarchically Porous Cafe2O4/Carbon Fiber Hybrids and Microwave Induced Catalytic Activity (cited: 2)
Yi Song,Chao Kong,Jia Li*
Author NameAffiliationE-mail
Yi Song School of Material Science and Engineering, University of Jinan, Jinan 250022, China  
Chao Kong School of Material Science and Engineering, University of Jinan, Jinan 250022, China  
Jia Li* School of Material Science and Engineering, University of Jinan, Jinan 250022, China mse_lij@ujn.edu.cn 
Abstract:
Hierarchically porous CaFe2O4/carbon ber hybrids with enhanced microwave induced cat-alytic activity for the degradation of methyl violet (MV) from water were synthesized from kapok by a novel two-step process coupling pore-fabricating and nanoparticles assembling. The as-prepared samples exhibited characteristic hollow ber morphology, CaFe2O4 nanopar-ticles dispersed uniformly on the surface of hollow carbon fibers (HCF). The effects of various factors such as CaFe2O4 loading, microwave power, catalyst doses, initial concen-tration of MV solution and pH value on the microwave induced degradation of MV over CaFe2O4/HCF were evaluated. It was found that the microwave induced degradation of MV over CaFe2O4/HCF had high reaction rate and short process time. The kinetic study indicated that the degradation of MV over CaFe2O4/HCF followed pseudo-first-order kinet-ics model. The high catalytic activity of CaFe2O4/HCF was facilitated by the synergistic relationship between microwave induced catalytic reaction and adsorption characteristics.
Key words:  Cafe2O4, Microwave, Catalytic activity, Kapok, Degradation
FundProject:
分级多孔Cafe2O4/C的合成及其微波催化活性
宋艺,孔超,李嘉*
摘要:
以天然木棉为模板,利用造孔及纳米颗粒自组装两步法合成了分级多孔的Cafe2O4/C复合催化剂. Cafe2O4/C复合催化剂保留了木棉模板的中空纤维形貌,且该中空纤维是由碳及均匀分布在碳表面的Cafe2O4纳米颗粒组成. 该复合催化剂具有较强的甲基紫微波催化降解活性. 研究了Cafe2O4负载量、微波功率、催化剂用量、甲基紫的初始浓度和pH值对微波诱导甲基紫降解的影响. 结果表明,Cafe2O4/C微波降解甲基紫的催化反应具有较高的反应速率和较短的反应时间. 其降解反应符合一级动力学模型. Cafe2O4/C 高的催化活性得益于催化反应和吸附特性之间的协同作用.
关键词:  铁酸钙,微波,催化活性,木棉,降解
DOI:10.1063/1674-0068/28/cjcp1407125
分类号: