000127124 001__ 127124
000127124 005__ 20241125101157.0
000127124 0247_ $$2doi$$a10.1002/adma.202303570
000127124 0248_ $$2sideral$$a134478
000127124 037__ $$aART-2023-134478
000127124 041__ $$aeng
000127124 100__ $$aWei, Cencen
000127124 245__ $$aExotic Electronic Properties of 2D Nanosheets Isolated from Liquid Phase Exfoliated Phyllosilicate Minerals
000127124 260__ $$c2023
000127124 5060_ $$aAccess copy available to the general public$$fUnrestricted
000127124 5203_ $$aSpectrally inactive, electrically insulating, and chemically inert are adjectives broadly used to describe phyllosilicate minerals like mica and chlorite. Here, the above is disproved by demonstrating aqueous suspensions of liquid exfoliated nanosheets from five bulk mica types and chlorite schist. Nanosheet quality is confirmed via transmission electron and X‐ray photoelectron spectroscopies, as well as electron diffraction. Through Raman spectroscopy, a previously unreported size‐ and layer‐dependent spectral fingerprint is observed. When analyzing the high‐yield suspensions (≈1 mg mL−1) through UV–vis spectroscopy, all phyllosilicates present bandgap (Eg) narrowing from ≈7 eV in the bulk to ≈4 eV for monolayers. Unusually, the bandgap is inversely proportional to the areal size (A) of the nanosheets, measured via atomic force microscopy. Due to an unrecorded quantum confinement effect, nanosheet electronic properties scale toward semiconducting behavior (bandgap ≈3 eV) as nanosheet area increases. Furthermore, modeling X‐ray diffraction spectra shows that the root cause of the initial bandgap narrowing is lattice relaxation. Finally, with their broad range of isomorphically substituted ions, phyllosilicate nanosheets show remarkable catalytic properties for hydrogen production.
000127124 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E13-20R$$9info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 823717-ESTEEM3$$9info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-104739GB-I00/AEI-10.13039-501100011033
000127124 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000127124 590__ $$a27.4$$b2023
000127124 592__ $$a9.191$$b2023
000127124 591__ $$aCHEMISTRY, PHYSICAL$$b4 / 178 = 0.022$$c2023$$dQ1$$eT1
000127124 593__ $$aMaterials Science (miscellaneous)$$c2023$$dQ1
000127124 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b11 / 439 = 0.025$$c2023$$dQ1$$eT1
000127124 593__ $$aNanoscience and Nanotechnology$$c2023$$dQ1
000127124 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b4 / 141 = 0.028$$c2023$$dQ1$$eT1
000127124 593__ $$aMechanics of Materials$$c2023$$dQ1
000127124 591__ $$aPHYSICS, CONDENSED MATTER$$b3 / 79 = 0.038$$c2023$$dQ1$$eT1
000127124 593__ $$aMechanical Engineering$$c2023$$dQ1
000127124 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b5 / 231 = 0.022$$c2023$$dQ1$$eT1
000127124 591__ $$aPHYSICS, APPLIED$$b6 / 179 = 0.034$$c2023$$dQ1$$eT1
000127124 594__ $$a43.0$$b2023
000127124 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000127124 700__ $$aRoy, Abhijit$$uUniversidad de Zaragoza
000127124 700__ $$aTripathi, Manoj
000127124 700__ $$aAljarid, Adel K.A.
000127124 700__ $$aSalvage, Jonathan P.
000127124 700__ $$aRoe, S. Mark
000127124 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, Raul
000127124 700__ $$aBoland, Conor S.
000127124 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000127124 773__ $$g35, 39 (2023), 2303570 [10 pp.]$$pAdv. mater.$$tAdvanced materials$$x0935-9648
000127124 8564_ $$s2355468$$uhttps://zaguan.unizar.es/record/127124/files/texto_completo.pdf$$yVersión publicada
000127124 8564_ $$s2597786$$uhttps://zaguan.unizar.es/record/127124/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000127124 909CO $$ooai:zaguan.unizar.es:127124$$particulos$$pdriver
000127124 951__ $$a2024-11-22-12:10:05
000127124 980__ $$aARTICLE