Hierarchical Petal-on-Petal MnO2/Vertical Graphene Foam for Postplasma Catalytic Decomposition of Toluene with High Efficiency and Ultralow Pressure Drop 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Industrial & Engineering Chemistry Research
年/卷/期
2018 / 57 / 45
页码
15291-15300
ISSN号
0888-5885
作者单位
Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;Zhejiang Univ, Inst Thermal Power Engn, Coll Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China;
作者
Yang, Shiling;Bo, Zheng;Yang, Huachao;Shuai, Xiaorui;Qi, Hualei;Li, Xiaodong;Yan, Jianhua;Cen, Kefa;
摘要
A hierarchical petal-on-petal MnO2/vertical graphene (VG) foam catalyst for high-performance toluene decomposition with low pressure drop in postplasma catalysis is demonstrated in this work. The as-fabricated hierarchical structure exhibits high toluene decomposition of similar to 93% and ozone conversion of nearly 100% at a high flow rate of 500 mL min(-1), significantly higher than those of MnO, deposited on conventional activated carbon and reduced graphene oxide powders with pressure drop of 2-3 orders of magnitude higher than that of VG foam. The three-dimensional macroporous structure of VG foam is beneficial for gas permeability and thus significantly decreases the pressure drop. The nonagglomerated morphology, large surface area, and sharp exposed edges of VG foam could provide abundant sites for anchoring catalysts without obvious agglomeration. Besides, the unique petal-like structure and open channels of MnO2 prominently enlarge the accessible surface area exposed to gas, leading to enhanced decomposition efficiency.
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