Efficient removal and recovery of copper by liquid phase catalytic hydrogenation using highly active and stable carbon-coated Pt catalyst supported on carbon nanotube

被引：10
作者：
Li, Minghui [1 ]
Sun, Yuhan [1 ]
Tang, Yuqiong [1 ]
Sun, Jingya [1 ]
Xu, Zhaoyi [1 ]
Zheng, Shourong [1 ]
机构：
[1] Nanjing Univ, State Expt Teaching Demonstrat Ctr Environm Sci &, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2020年 / 388卷
基金：
中国国家自然科学基金;
关键词：
Liquid phase catalytic hydrogenation; Cu2+; Carbon nanotube supported Pt; Coated catalysts; OXYGEN REDUCTION; ION-EXCHANGE; WASTE-WATER; HYDRODECHLORINATION; PERFORMANCE; ADSORPTION; PALLADIUM; PRECIPITATION; DEACTIVATION; DEGRADATION;
D O I：
10.1016/j.jhazmat.2019.121745
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this work, we coated carbon nanotubes (CNT) supported Pt catalyst by conductive carbon layers (labelled as Pt/CNT@C) and the catalyst was further functionalized by surface oxidation (denoted as Pt/CNT@Oxi-C). The textural properties of the catalysts were extensively characterized and liquid phase catalytic hydrogenation reduction of Cu2+ was conducted. Results showed that Pt particles of Pt/CNT@C and Pt/CNT@Oxi-C were completely embedded beneath carbon overcoatings. Furthermore, contrary to Pt/CNT no CO chemisorption was observed on both Pt/CNT@C and Pt/CNT@Oxi-C, indicative of the absence of exposed Pt particles in carboncoated Pt/CNT. Effective Cu2+ reduction and metallic Cu deposition by catalytic hydrogenation were achieved on catalyst surface. Surface oxidation of Pt/CNT@C resulted in increased surface wetting and functionality content, leading to noticeable enhancement in catalytic activity for Cu2+ reduction. Additionally, Cu2+ reduction on Pt/CNT@Oxi-C proceeded through the Langmuir-Hinshelwood model, suggesting that the reduction of Cu2+ adsorbed on catalyst surface was the rate-determining step. Carbonization of overcoatings exhibited a volcano-type relationship between carbonization temperature and catalytic activity of Pt/CNT@C for Cu2+ reduction. As for catalyst reuse, Pt/CNT lost 92 % of initial activity after five consecutive reaction cycles, whereas Pt/CNT@Oxi-C maintained a high catalytic activity without remarkable deactivation.
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页数：10
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共 45 条
  • [1] Catalytic hydrodechlorination over Pd supported on amorphous and structured carbon
    Amorim, C
    Yuan, G
    Patterson, PM
    Keane, MA
    [J]. JOURNAL OF CATALYSIS, 2005, 234 (02) : 268 - 281
  • [2] Total dissolved and bioavallable elements in water and sediment samples and their accumulation in Oreochromis mossambieus of polluted Manchar Lake
    Arain, M. B.
    Kazi, T. G.
    Jamali, M. K.
    Jalbani, N.
    Afridi, H. I.
    Shah, A.
    [J]. CHEMOSPHERE, 2008, 70 (10) : 1845 - 1856
  • [3] Treatment of copper(II) containing wastewater by a newly developed ligand based facial conjugate materials
    Awual, Md Rabiul
    Hasan, Md Munjur
    Khaleque, Md Abdul
    Sheikh, Md Chanmiya
    [J]. CHEMICAL ENGINEERING JOURNAL, 2016, 288 : 368 - 376
  • [4] Trace copper(II) ions detection and removal from water using novel ligand modified composite adsorbent
    Awual, Md. Rabiul
    Ismael, Mohamed
    Yaita, Tsuyoshi
    El-Safty, Sherif A.
    Shiwaku, Hideaki
    Okamoto, Yoshihiro
    Suzuki, Shinichi
    [J]. CHEMICAL ENGINEERING JOURNAL, 2013, 222 : 67 - 76
  • [5] Selective hydrogenation of citral by noble metals supported on carbon xerogels: Catalytic performance and stability
    Bailon-Garcia, Esther
    Carrasco-Marin, Francisco
    Perez-Cadenas, Agustin F.
    Maldonado-Hodar, Francisco J.
    [J]. APPLIED CATALYSIS A-GENERAL, 2016, 512 : 63 - 73
  • [6] Effective catalytic reduction of Cr(VI) over TiO2 nanotube supported Pd catalysts
    Chen, Huan
    Shao, Yun
    Xu, Zhaoyi
    Wan, Haiqin
    Wan, Yuqiu
    Zheng, Shourong
    Zhu, Dongqiang
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 105 (3-4) : 255 - 262
  • [7] Binary and Ternary Doping of Nitrogen, Boron, and Phosphorus into Carbon for Enhancing Electrochemical Oxygen Reduction Activity
    Choi, Chang Hyuck
    Park, Sung Hyeon
    Woo, Seong Ihl
    [J]. ACS NANO, 2012, 6 (08) : 7084 - 7091
  • [8] Nanostructured Pt/C electrocatalysts with high platinum dispersions through zeolite-templating
    Coker, Eric N.
    Steen, William A.
    Miller, Jeffrey T.
    Kropf, A. Jeremy
    Miller, James E.
    [J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 101 (03) : 440 - 444
  • [9] Ethanol decomposition and steam reforming of ethanol over CeZrO2 and Pt/CeZrO2 catalyst: Reaction mechanism and deactivation
    de Lima, Sania M.
    Silva, Adriana M.
    Graham, Uschi M.
    Jacobs, Gary
    Davis, Burtron H.
    Mattos, Lisiane V.
    Noronha, Fabio B.
    [J]. APPLIED CATALYSIS A-GENERAL, 2009, 352 (1-2) : 95 - 113
  • [10] Simultaneous separation of copper from nickel in ammoniacal solutions using supported liquid membrane containing synergistic mixture of M5640 and TRPO
    Duan, Hengpan
    Wang, Shixiong
    Yang, Xiangjun
    Yuan, Xiaohong
    Zhang, Qin
    Huang, Zhangjie
    Guo, Hong
    [J]. CHEMICAL ENGINEERING RESEARCH & DESIGN, 2017, 117 : 460 - 471
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