{"id":147558,"date":"2021-01-05T15:35:54","date_gmt":"2021-01-05T12:35:54","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/scientists-identify-transition-metal-for-highly-efficient-carbon-dioxide-activation\/"},"modified":"2021-01-05T15:35:54","modified_gmt":"2021-01-05T12:35:54","slug":"scientists-identify-transition-metal-for-highly-efficient-carbon-dioxide-activation","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/scientists-identify-transition-metal-for-highly-efficient-carbon-dioxide-activation\/","title":{"rendered":"#Scientists identify transition metal for highly-efficient carbon dioxide activation"},"content":{"rendered":"

“#Scientists identify transition metal for highly-efficient carbon dioxide activation<\/strong>”<\/p>\n

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\"Scientists
\n Spectroscopic identification of transition-metal M[\u03b72<\/sup>-(O,O)C] species for highly-efficient CO2 activation. Credit: ZHENG Huijun
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The atmospheric concentration of carbon dioxide (CO2<\/sub>) has been increasing over the past century, imposing severe consequences for global climate change and planetary temperature increase.<\/p>\n


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To reduce CO2<\/sub> from the atmosphere and take it as the feedstock for sustainable energy sources, the capture and utilization of CO2<\/sub> to create valuable chemicals is highly desired.<\/p>\n

A research team led by Prof. Jiang Ling and Prof. Fan Hongjun from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Science<\/a>s, in collaboration with Prof. Zhao Zhi from Hebei University of Engineering, characterized a transition metal M[\u03b72-(O,O)C] species for highly-efficient CO2<\/sub> activation.<\/p>\n

The result was published in the Journal of Physical Chemistry Letters<\/i> on Dec. 28.<\/p>\n

Based on the recently-developed infrared photodissociation spectroscopy app<\/a>aratus, the researchers synthesized and characterized an unprecedented transition metal M[\u03b72-(O,O)C] motif with bidentate double oxygen metal-CO2<\/sub> coordination in the [ZrO(CO2<\/sub>)n>=4]+<\/sup> complexes.<\/p>\n

The Zr[\u03b72-(O,O)C] species yielded a CO2<\/sub>– radical ligand, showing high efficiency in CO2<\/sub> activation. The CO2<\/sub>–<\/sup> radical and non-linear character of these series<\/a> of M[\u03b72<\/sup>-(O,O)C] complexes might enable high reactivity in many important reactions such as C-C coupling and C-H activation.<\/p>\n

There were two important prerequisites for certain metals to form this intriguing M[\u03b72<\/sup>-(O,O)C] species: the metal center had high reduction capability and the oxidation state of the metal center was lower than its highest one by one.<\/p>\n

Systematic analyses for the effects of different transition and main-group metals on the formation of M[\u03b72<\/sup>-(O,O)C] complexes provided comprehensive insights into the microscopic mechanism of CO2<\/sub> activation by a single metal center, offering design criteria for single-atom catalyst with isolated transition metal atoms dispersed on supports. Such advances might be integrated into the CO2<\/sub>-activation and -utilization technology<\/a>.<\/p>\n

This study highlights the pivotal roles played by the M[\u03b72<\/sup>-(O,O)C] species in CO2<\/sub> activation and opens new avenues towards the development of related single-atom catalysts with isolated transition metal atoms dispersed on supports.<\/p>\n\n

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Scientists reveal mechanism of dioxygen activation\n <\/p><\/div>\n

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\n More information:<\/strong>
\n Huijun Zheng et al. Spectroscopic Identification of Transition-Metal M[\u03b72-(O,O)C] Species for Highly-Efficient CO2 Activation, The Journal of Physical Chemistry Letters<\/i> (2020). DOI: 10.1021\/acs.jpclett.0c03379<\/a><\/p><\/div>\n
\n Provided by
\n Chinese Academy of Sciences
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Citation<\/strong>:
\n Scientists identify transition metal for highly-efficient carbon dioxide activation (2021, January 5)
\n retrieved 5 January 2021
\n from https:\/\/phys.org\/news<\/a>\/2021-01-scientists-transition-metal-highly-efficient-carbon.html<\/p>\n

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