Nanocrystals of CuCoO₂ derived from MOFs and their catalytic performance for the oxygen evolution reaction

Abstract

In this work, two different solvothermal synthesis routes were employed to prepare MOFs derived CuCoO2 (CCO) nanocrystals for electrocatalytic oxygen evolution reaction (OER) application. The effects of the reductants (ethylene...

CuCoO2 nanocrystals derived from an isopropanol-modified Cu-BTC using alkaline water oxidation

“…1, which was adopted from our previous studies. [16][17][18][19][20] Typically, CCO was synthesized by applying the solvothermal method at 140 1C for 24 hours, and the experimental details are shown in the ESI. † First, Cu-BTC-IPA was prepared through the hydrothermal reaction at 120 1C by adding isopropyl alcohol (IPA) into the mixed solution of Cu(NO 3 ) 2 Á3H 2 O and H 3 BTC based on a modified method from other report.…”

“…17 Moreover, we recently reported a solvothermal approach for synthesizing MOF-derived CCO nanocrystals using ZIF-67 as a Co source and Cu-BTC as a Cu source. 18,19 The above results indicate that MOF-derived CCO electrocatalysts exhibit enhanced OER performance owing to the tunable morphology and crystal size of CCO-based nanocrystals.…”

Gram-scale solvothermal synthesis of Fe-doped CuCoO2 nanosheets and improvement of the oxygen evolution reaction performance

“…Recently, delafossite oxide materials (ABO 2 , such as AgFeO 2 , 13 CuFeO 2 , 14,15 CuMnO 2 , 16–18 CuCoO 2 , 19–22 CuAlO 2 , 23,24 CuCrO 2 , 25 CuScO 2 , 26 etc .) have been reported to be capable of catalyzing the OER and regarded as prospective candidates for novel OER catalysts due to their economic feasibilities and high electrochemical stability.…”

“…[5][6][7][8][9] Therefore, exploring novel cost-effective OER electrocatalysts with high electrochemical activity has attracted tremendous research attention. [10][11][12] Recently, delafossite oxide materials (ABO 2 , such as AgFeO 2 , 13 CuFeO 2 , 14,15 CuMnO 2 , [16][17][18] CuCoO 2 , [19][20][21][22] CuAlO 2 , 23,24 CuCrO 2 , 25 CuScO 2 , 26 etc.) have been reported to be capable of catalyzing the OER and regarded as prospective candidates for novel OER catalysts due to their economic feasibilities and high electrochemical stability.…”

“…As a typical kind of ABO 2 , CuCoO 2 has excellent theoretical OER catalytic activity according to the theoretical calculations. 27,28 However, CuCoO 2 generally suffers from a large particle size, 19,22 a small specific surface area and limited electrochemically active sites, thereby exhibiting unsatisfactory overpotentials such as a high overpotential of around 400 mV for CuCoO 2 to reach a current density of 10 mA cm −2 . Therefore, it is significant to explore the rational design and modification of ABO 2 to improve the electrochemical performance.…”