Electrochemical Deposition of a Metal–Organic Framework and Subsequent Conversion to Cobalt Selenide

Abstract

Here, we prepared a cobalt–metal organic framework (MOF) by anodic electrodeposition at room temperature and transformed it first to Co3O4 by calcination. The MOF-derived Co3O4 was then employed as a sacrificial template to fabricate CoSe films via anion exchange with a NaHSe medium. Electrodeposited MOF films showed a uniform and well-defined dodecahedral morphology with a particle size in the 3–4 μm range. The MOF-derived Co3O4 retained the original dodecahedral morphology, and these morphological features were essentially preserved in CoSe derived from the Co3O4 template via anion exchange. Both the parent oxide and the chalcogenide were characterized by a variety of spectroscopic and microscopic methods. The MOF-derived CoSe was demonstrated as a nonenzymatic glucose sensor with an analytical sensitivity of 1423.9 μA mM–1 cm–2 and a lower detection limit of 1.53 μM.

Electrosynthesis of CdS/MoS2 Using Electrodeposited MoSx: A Combined Voltammetry–Electrochemical Quartz Crystal Nanogravimetry Study

“…For the TEM sample preparation, the particles were scraped off the support electrode surface. 34 They were then dispersed by sonication in methanol followed by immobilization on a carbon grid for examination. Prior to the examination, the particles were thermally annealed as needed.…”

Porous framework-based hybrid materials for solar-to-chemical energy conversion: from powder photocatalysts to photoelectrodes

“…Since MOFs and COFs are formed by chemical reactions between building blocks, their synthesis is generally carried out by providing external energy in the form of heat, 215,216 an electrical field, 217 or microwave irradiation. 218 Their synthetic methods can be categorized into the following: (1) one-pot wet methods (e.g., hydrothermal synthesis and microwave synthesis), 76 (2) sequential wet methods (e.g., layer-by-layer [LbL] deposition), 219 (3) electrochemical deposition, 220 and (4) dry methods (e.g., vacuum deposition). 221 Regardless of the growth method, it is important to balance the interactions between building blocks with the interactions between building blocks and a substrate for the uniform and conformal growth of MOF and COF thin films.…”

Metal–Organic-Framework- and MXene-Based Taste Sensors and Glucose Detection

“…Ni 2 P/G exhibited a high activity and low LOD of 0.44 µM, which was attributed to the beneficial effect of the Ni 2 P nanograins and graphene. Another study related to the usage of metal selenides as active materials for glucose sensing was reported by Jee et al [92]. The authors deposited ZIF-67 on a Co substrate before carrying out oxidation and anion exchange to generate CoSe.…”

“…Ni 2 P/G exhibited a high activity and low LOD of 0.44 µM, which was attributed to the beneficial effect of the Ni 2 P nanograins and graphene. Another study related to the usage of metal selenides as active materials for glucose sensing was reported by Jee et al[92]. The authors deposited ZIF-67 on a Co substrate before carrying out oxidation and anion exchange to generate CoSe.Finally, considering the high activity of MOF-related materials and their feasibility in glucose sensing applications, they can be mixed with other materials to further enhance their performance.…”