2018
DOI: 10.1021/acs.jpcc.8b06069
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Weak Field Tuning of Transition-Metal Dopant Hybridization in Solid Hosts

Abstract: Transition-metal (TM)-doped solids are one of the most extensively studied compounds in the fields of catalysis, magnetism, solar cells, etc., due to their tunable optoelectronic properties that stem from TM energy-level hybridization. In this work, the hybridization of the Ni–O bond in TiO2:Ni films was controlled in a stable, reversible manner via surface functionalization with polarized molecules. The Ni-doped TiO2 surface was functionalized with para-benzoic acid groups to modify the electron density distr… Show more

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Cited by 14 publications
(26 citation statements)
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“…High-resolution (HR) XPS measurements were performed for C 1s, O 1s, Al 2p, Li 1s, and M 2p (M = Ni, Co, Mn), at the relevant binding energy ranges for these features. The spectra were processed using CasaXPS , post-processing software. Charge correction was performed by referencing to the adventitious C 1s peak at 284.8 eV.…”
Section: Methodsmentioning
confidence: 99%
“…High-resolution (HR) XPS measurements were performed for C 1s, O 1s, Al 2p, Li 1s, and M 2p (M = Ni, Co, Mn), at the relevant binding energy ranges for these features. The spectra were processed using CasaXPS , post-processing software. Charge correction was performed by referencing to the adventitious C 1s peak at 284.8 eV.…”
Section: Methodsmentioning
confidence: 99%
“…The film roughness, conformality, and optical absorption have been observed to be similar to what has been reported previously. 17 The diffraction pattern of the TiO 2 :Ni 2+ (10 mol %) film indicates that all the major diffraction peaks correspond with the anatase TiO 2 structure (Figure S1a), suggesting the crystalline nature of the doped TiO 2 films. Additionally, X-ray photoelectron spectroscopy (XPS) measurements indicate the presence of Ti, Ni, O, and C elements in the survey spectrum (Figure S1b).…”
Section: ■ Introductionmentioning
confidence: 99%
“…Optimum Ni doping concentration of 10 mol % was chosen in this study as previous reports show that higher doping concentrations tend to form impurity phases such as NiTiO 3 or NiO. 17,27,28 Dosing of TiO 2 /TiO 2 :Ni 2+ Films. The vapors of BZA ligands were adsorbed onto the surface of pure TiO 2 and TiO 2 :Ni 2+ (10 mol %) films using in situ physical vapor deposition method.…”
Section: ■ Introductionmentioning
confidence: 99%
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“…The surface of the CSNPs was functionalized with biotin using carboxylic acid chemistry 30 instead of capping ligands or cross-linking agents, both of which require complex reaction chemistries. Fourier-transform infrared spectroscopy (FTIR) verified the successful conjugation of biotin to the CSNP surface by exhibiting the presence of a sharp peak at 1686 cm −1 in the spectrum of the functionalized CSNPs, assigned to the stretching vibration of the amide bond (Figure S1B).…”
mentioning
confidence: 99%