KMS Chongqing Institute of Green and Intelligent Technology, CAS
| Fe-Doped CoNi layered hydrogencarbonate hierarchical Nano-Array assisted growth of ZIF-67 as an efficient OER/UOR bifunctional catalyst reaction for Overall Urea-Water electrolysis | |
Tang, Hongwen1; Sun, Zeyu1; Fan, Shuyan1; Feng, Siwen1; Li, Ling1; Fang, Ling2 ; Wang, Cuijuan1
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| 2024-07-01 | |
| 摘要 | The design of efficient electrocatalysts for OER and UOR is essential for achieving sustainable hydrogen production and enabling simultaneous wastewater treatment. Here, a versatile fabrication method for the in -situ growth of ZIF -67 from hydrocarbonate as a template for three-dimensional hierarchical nano-arrays. This strategy provides an opportunity for controllably tuning the interfacial assembly of MOFs materials on precursor template nanomaterials. The obtained MIM@Fe 0 . 1 -CoNi CH/NF exhibited enhanced electrocatalytic performance as an electrocatalytic anode for the OER and UOR. The MIM@Fe 0 . 1 -CoNi CH/NF required only 194 mV and 285 mV overpotentials to achieve the current densities of 10 and 100 mA & sdot; cm - 2 in the electrolyte of 1.0 M KOH, and the overpotentials in the 1.0 M KOH + 0.5 M Urea electrolyte requires only 1.31 V (vs.RHE) to achieve a current density of 10 mA & sdot; cm - 2 . Notably, (+)MIM@Fe 0 . 1 -CoNi CH/NF || Pt/C/NF(-) achieves 10 mA & sdot; cm - 2 in ureaassisted electrolysis at only 1.36 V (vs.RHE). The excellent catalytic performance was attributed to the modification of the CoNi CH/NF template by Fe 3+ and 2-MIM, which modulated the Ni 2+ and Co 2+ electronic structures and optimised the adsorption behaviour of the OER/UOR intermediates. Overall, this work provides a strategy for preparing desirable catalysts for clean energy and wastewater treatment. |
| 关键词 | Metal-organic frameworks Layered double hydroxides Bifunctional catalyst Oxygen evolution reaction Urea oxidation reaction |
| DOI | 10.1016/j.cej.2024.152023 |
| 发表期刊 | CHEMICAL ENGINEERING JOURNAL
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| ISSN | 1385-8947 |
| 卷号 | 491页码:11 |
| 通讯作者 | Fang, Ling(fangling@cigit.ac.cn) ; Wang, Cuijuan(wangcuijuan@swjtu.edu.cn) |
| 收录类别 | SCI |
| WOS记录号 | WOS:001242103500001 |
| 语种 | 英语 |
