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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Chlorine-doped alpha-Co(OH)(2) hollow nano-dodecahedrons prepared by a ZIF-67 self-sacrificing template route and enhanced OER catalytic activity
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Chlorine-doped alpha-Co(OH)(2) hollow nano-dodecahedrons prepared by a ZIF-67 self-sacrificing template route and enhanced OER catalytic activity

机译：通过ZIF-67自我牺牲模板途径制备的氯掺杂α-CO（OH）（2）中空纳米十二烷烃和增强的oer催化活性

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摘要

Hollow alpha-Co(OH)(2) and Cl-doped alpha-Co(OH)(2) nano-dodecahedrons were successfully synthesized via a ZIF-67-assisted template route in the absence/presence of NaCl. The reactions were carried out in a Teflon-lined stainless-steel autoclave at 40 degrees C for 4 h, employing dodecahedral ZIF-67 and hexamethylenetetramine (HMT) as the reactants. The as-obtained hollow nano-dodecahedrons were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), X-ray photoelectron energy, EDS mapping and N-2 sorption-desorption technologies. Electrochemical measurements showed that both alpha-Co(OH)(2) and Cl-doped alpha-Co(OH)(2) hollow nano-dodecahedrons displayed excellent catalytic activities for the oxygen evolution reaction (OER) and Cl-doped alpha-Co(OH)(2) hollow ones possessed stronger electrocatalytic performances. To deliver a current density of 10 mA cm(-2), Cl-doped alpha-Co(OH)(2) hollow nano-dodecahedrons required a low overpotential of 298 mV, which is smaller than most reported alpha-Co(OH)(2) catalysts. Also, the as-obtained hollow catalyst still had excellent OER cycling stability and durability. After 1000 CV cycles, the overpotential merely slightly increased. Continuously catalyzing at the current density of 10 mA cm(-2) for 40 h, the voltage only increased similar to 2.5%.
机译：中空α-CO（OH）（2）和CL-掺杂的α-CO（OH）（2）纳米十二烷烃通过在没有/存在NaCl的情况下通过ZIF-67辅助模板途径合成。将反应在特氟仑衬里的不锈钢高压釜中以40℃，4小时，用十二章偏向ZIF-67和六亚甲基四胺（HMT）作为反应物。通过X射线粉末衍射（XRD），现场发射扫描电子显微镜（FESEM），透射电子显微镜（TEM），傅里叶变换红外（FTIR），X射线光电子能量，EDS，X射线光电电能，EDS的X射线粉末衍射（XRD）。映射和N-2吸附解吸技术。电化学测量表明，α-CO（OH）（2）和Cl-掺杂的α-Co（OH）（2）中空纳米十二烷膦酮用于氧气进化反应（Oer）和Cl-掺杂的α-Co的优异催化活性（哦）（2）空心的，具有更强的电催化性能。为了提供10 mA cm（-2）的电流密度，Cl-掺杂的α-Co（OH）（2）中空纳米十二烷烃所需的298 mV的低调，比大多数报告的alpha-co（OH） （2）催化剂。而且，AS获得的中空催化剂仍然具有优异的涂层循环稳定性和耐久性。经过1000个CV循环后，过电位仅略微增加。连续催化10 mA cm（-2）的电流密度40小时，电压仅增加到2.5％。

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    Zha Qingqing; Xu Wenyan; Li Xiaolei; Ni Yonghong;

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    Anhui Normal Univ Anhui Key Lab Funct Mol Solids Key Lab Funct Mol Solids Minist Educ Coll Chem &

    Mat Sci Anhui Lab Mol Bas 189 Jiuhua Southern Rd Wuhu 241002 Peoples R China;

    Anhui Normal Univ Anhui Key Lab Funct Mol Solids Key Lab Funct Mol Solids Minist Educ Coll Chem &

    Mat Sci Anhui Lab Mol Bas 189 Jiuhua Southern Rd Wuhu 241002 Peoples R China;

    Anhui Normal Univ Anhui Key Lab Funct Mol Solids Key Lab Funct Mol Solids Minist Educ Coll Chem &

    Mat Sci Anhui Lab Mol Bas 189 Jiuhua Southern Rd Wuhu 241002 Peoples R China;

    Anhui Normal Univ Anhui Key Lab Funct Mol Solids Key Lab Funct Mol Solids Minist Educ Coll Chem &

    Mat Sci Anhui Lab Mol Bas 189 Jiuhua Southern Rd Wuhu 241002 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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