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Soc. open sci."],"published-print":{"date-parts":[[2018,6]]},"abstract":"<jats:p>A method developed based on the capillary effect and capillary condensation theory was used to synthesize an innovative Fe\/C\/Pd composite in this study. This composite (Fe@CNTs@Pd) consists of carbon nanotubes (CNTs) with nanoscale zerovalent iron (NZVI) on the inner surface and palladium nanoparticles supported on the outer surface of CNTs. This structure successfully addresses the problems of high iron corrosion rate and lower utilization rate of hydrogen in the application of bimetal nanoparticles for trichloroethylene (TCE) removal. TCE degradation experiments and electrochemical tests were conducted to investigate the material properties and reaction mechanisms of the composite. It is found that the prepared composite material contribute a high level of TCE dechlorination rate and substantially reduced hydrogen production during iron corrosion in water compared with the conventional CNTs-supported bimetal materials (Fe\/Pd@CNTs). Hydrogen spillover effect helps the reactivity of Fe@CNTs@Pd for TCE degradation and suppressed the galvanic cell effect, which results in a stronger resistance to corrosion. Although the<jats:italic>K<\/jats:italic><jats:sub>obs<\/jats:sub>of Fe@CNTs@Pd was 16.87% lower than that of Fe\/Pd@CNTs, the hydrogen production rate of Fe@CNTs@Pd was 10 times slower than that of Fe\/Pd@CNTs. Therefore, Fe@CNTs@Pd shows a significant reduction in the corrosion rate at a cost of slightly slower degradation of TCE. In sum, the prepared composites demonstrate important characteristics, including alleviating NZVI agglomeration, maintaining high TCE removal efficiency and reducing the corrosion of NZVI.<\/jats:p>","DOI":"10.1098\/rsos.172242","type":"journal-article","created":{"date-parts":[[2018,6,27]],"date-time":"2018-06-27T07:35:48Z","timestamp":1530084948000},"page":"172242","update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Preparation of palladized carbon nanotubes encapsulated iron composites: highly efficient dechlorination for trichloroethylene and low corrosion of nanoiron"],"prefix":"10.1098","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7864-5955","authenticated-orcid":false,"given":"Xinyu","family":"Wang","sequence":"first","affiliation":[{"name":"College of Environmental Science and Engineering\/Tianjin Key Laboratory of Environmental Remediation and Pollution Control\/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Wei Jin Road 94, Tianjin 300071, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering\/Tianjin Key Laboratory of Environmental Remediation and Pollution Control\/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Wei Jin Road 94, Tianjin 300071, People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Greg","family":"Lowry","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoyan","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yajie","family":"Guo","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tielong","family":"Li","sequence":"additional","affiliation":[{"name":"College of Environmental Science and Engineering\/Tianjin Key Laboratory of Environmental Remediation and Pollution Control\/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Wei Jin Road 94, Tianjin 300071, People's Republic of China"},{"name":"Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"175","published-online":{"date-parts":[[2018,6,27]]},"reference":[{"key":"e_1_3_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0043-1354(00)00463-2"},{"key":"e_1_3_6_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/es100051q"},{"key":"e_1_3_6_4_2","unstructured":"Gu B Liang L West OR Cameron P Davenport D. 1997 Degradation of trichloroethylene (TCE) and polychlorinated biphenyls (PCBs) by Fe and Fe-Pd bimetals in the presence of surfactants and cosolvents. 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