单原子铂催化剂的制备及其低温催化氧化一氧化碳
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摘要
以氧化石墨烯为载体,单原子铂(Pt)为活性组分,利用化学还原法制备了单原子Pt/rGO催化剂,用在催化氧化一氧化碳(CO)反应中。通过透射电子显微镜、扫描电子显微镜、球差电镜、傅里叶红外光谱仪对单原子Pt催化剂进行表征。考察了金属负载量、反应温度对催化剂性能的影响,利用气相色谱对CO氧化反应性能进行评价。此次实验包含催化剂的制备、表征和性能测试,实验难度适中,贴近科研前沿,可以让学生体验一个综合的科研过程,激发学生的科研兴趣,培养学生的科研能力。
The single-atom Pt was supported on graphene oxide(Pt/rGO) by a chemical reduction method for catalytic oxidation of CO. The single-atom Pt/rGO catalyst was characterized by transmission electron microscopy, scanning electron microscopy, high-angle annular dark field scanning transmission electron microscopy and Fourier infrared spectroscopy. This experiment includes the synthesis, characterization and catalytic tests of Pt/rGO. The effects of metal loading and reaction temperature on the activity of the catalyst were investigated. The performance of CO oxidation reaction was evaluated by gas chromatography. The experiment is of moderate difficulty. It is close to the experimental content of the frontier of scientific research. It allows students to experience a comprehensive scientific research process, inspire students' research interests, and cultivate their scientific research capabilities.
The single-atom Pt was supported on graphene oxide(Pt/rGO) by a chemical reduction method for catalytic oxidation of CO. The single-atom Pt/rGO catalyst was characterized by transmission electron microscopy, scanning electron microscopy, high-angle annular dark field scanning transmission electron microscopy and Fourier infrared spectroscopy. This experiment includes the synthesis, characterization and catalytic tests of Pt/rGO. The effects of metal loading and reaction temperature on the activity of the catalyst were investigated. The performance of CO oxidation reaction was evaluated by gas chromatography. The experiment is of moderate difficulty. It is close to the experimental content of the frontier of scientific research. It allows students to experience a comprehensive scientific research process, inspire students' research interests, and cultivate their scientific research capabilities.
引文
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[2] 朱文祥.化学教育,2001,22(1):1-4
[3] 李敏,管景奇.化学教育(中英文),2018,39(20):47-51
[4] Qiao B T,Wang A Q,Yang X F,et al.Nat.Chem.,2011,3(8):634-641
[5] Qiao B T,Liu J X,Wang Y G,et al.Acs.Catal.,2015,5(11):6249-6254
[6] Li F Y,Li Y F,Zeng X C,et al.Acs.Catal.,2015,5(2):544-552
[7] Li Y J,Xu L,Liu H B,et al.Chem.Soc.Rev.,2014,43(8):2572-2586
[8] 韩冰,郎睿,乔波涛,等.催化学报,2017,38(9):1498-1507
[9] Williams E R,Jr G C J,Fang L,et al.J.Am.Chem.Soc.,1992,114(9):3207-3210
[10] Li L,Zeng X C.J.Am.Chem.Soc.,2014,136(45):15857-15860
[11] Hyun You K,Graeme H.J.Phys.Chem.Lett.,2013,4(1):216-221
[12] Li M,Wu S J,Yang X Y,et al.Appl.Catal.A-Gen.,2017,543:61-66
[13] Huang Q H,Tao F F,Zou L L,et al.Electrochim Acta,2015,152(15):140-145
[14] Krishnamoorthy K,Veerapandian M,Yun K,et al.Carbon,2013,53(1):38-49
[15] Moses-Debusk M,Yoon M,Allard L F,et al.J.Am.Chem.Soc.,2013,135(34):12634-12645
[16] Gracia F J,Bollmann L,Wolf E E,et al.J.Catal.,2003,220(2):382-391
[17] Bamwenda G R,Tsubota S,Nakamura T,et al.Catal.Lett.,1997,44(1/2):83-87