Dergi makalesi Açık Erişim
Celebi, Nuray; Soysal, Furkan; Salimi, Kouroush
{ "DOI": "10.1016/j.jcis.2021.10.145", "abstract": "Herein, spherical hollow N-doped carbon-incorporated UiO-66 metal-organic frameworks (MOF, H-UiO-66) are synthesized using bio-inspired polydopamine (pDA) nanoparticles as multifunctional starting templates. The calculated band properties (E-CB = -0.45 eV and E-VB = 2.05 eV versus normal hydrogen electrode (NHE)) strongly reveals the visible light absorption of H-UiO-66 nanostructures thanks to the spherical shape-defined morphology as well as cavity of the hollow structure. The evaluation of photo-electrochemical (PEC) water splitting performance of H-UiO-66 photoanodes shows maximum photocurrent density as 10.95 mA/cm(2) at 1.53 V versus RHE under LED illumination in which almost no response is recorded at dark. Furthermore, the improved visible-light sensitive PEC water splitting performance of H-UiO-66 photoanodes could be attributed to the main advantages of the one-pot synthesis method of hollow MOFs using multifunctional pDA as follows: i) the hollow morphology provides superior incident photon scattering and multi-reflection of photons inside the MOF cavity; ii) presence of N-doped carbon incorporated morphology facilitates the absorption of water molecules as well as the pi-polar interaction between water and carbon; and iii) the reduced bang-gap led to the optical localization of light within HUiO-66 clusters, suggesting a new generation of heterogeneous well-defined nanostructures for sustainable PEC hydrogen production. (C) 2021 Elsevier Inc. All rights reserved.", "author": [ { "family": "Celebi", "given": " Nuray" }, { "family": "Soysal", "given": " Furkan" }, { "family": "Salimi", "given": " Kouroush" } ], "container_title": "JOURNAL OF COLLOID AND INTERFACE SCIENCE", "id": "235810", "issued": { "date-parts": [ [ 2022, 1, 1 ] ] }, "page": "1238-1246", "title": "Spherical shape-defined hollow UiO-66 metal-organic frameworks with superior incident photon scattering for enhanced photoelectrochemical H-2 evolution", "type": "article-journal", "volume": "608" }
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