The Effect of La3+ on the Methylene Blue Dye Removal Capacity of the La/ZnTiO3 Photocatalyst, a DFT Study

X Jaramillo-Fierro, G Cuenca, J Ramón - Nanomaterials, 2022 - mdpi.com
Theoretically, lanthanum can bond with surface oxygens of ZnTiO3 to form La-O-Ti bonds,
resulting in the change of both the band structure and the electron state of the surface. To …

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

X Jaramillo-Fierro, LF Capa, F Medina, S González - Molecules, 2021 - mdpi.com
The search for alternative materials with high dye adsorption capacity, such as methylene
blue (MB), remains the focus of current studies. This computational study focuses on oxides …

Dopant-vacancy activated tetragonal transition metal selenide for hydrogen evolution electrocatalysis

Q Huang, X Liu, Z Zhang, L Wang, B Xiao, Z Ao - Chinese Chemical Letters, 2023 - Elsevier
Hydrogen production from water electrolysis using renewable electricity is a highly
promising route to solve the energy crisis of human society. The tetragonal 3d-transition …

Ultraviolet and White Light Emissions from Multiphoton Upconversion Transitions in Yb/Tm/Ho Codoped Cubic Zirconia Single Crystals Excited by NIR

W Wu, Y Wang, L Wu, H Zhang, Z Zhu, S Ta… - ACS …, 2024 - ACS Publications
Under excitation at 980 nm, Tm3+ may emit ultraviolet, blue, and red light, and Ho3+ may
emit green light through multiphoton upconversion processes in Yb/Tm/Ho codoped …

Controlling the electronic and optical properties of HfS 2 mono-layers via lanthanide substitutional doping: a DFT+ U study

KO Obodo, G Gebreyesus, CNM Ouma, JT Obodo… - RSC …, 2020 - pubs.rsc.org
Two dimensional HfS2 is a material with potential applications in the field of photo-catalysis
and advanced solid state devices. Density functional theory with the Hubbard U parameter …

Comparative Study of the Effect of Doping ZnTiO3 with Rare Earths (La and Ce) on the Adsorption and Photodegradation of Cyanide in Aqueous Systems

X Jaramillo-Fierro, G Cuenca, J Ramón - International Journal of …, 2023 - mdpi.com
Cyanide is a highly toxic compound that can pose serious health problems to both humans
and aquatic organisms. Therefore, the present comparative study focuses on the removal of …

First principles study of single and multi-site transition metal dopant ions in MoS2 monolayer

KO Obodo, CNM Ouma, JT Obodo, M Braun… - Computational …, 2019 - Elsevier
Using first-principles calculation, a systematic study on the effect of transition metal (TM: V,
Cr, Mn, Fe, Co, Ni) dopant atoms in the MoS 2 monolayer as potential spintronic, catalytic …

La3+'s Effect on the Surface (101) of Anatase for Methylene Blue Dye Removal, a DFT Study

X Jaramillo-Fierro, S Gaona, E Valarezo - Molecules, 2022 - mdpi.com
Density functional theory (DFT) is a widely used method for studying matter at the quantum
level. In this study, the surface (101) of TiO2 (anatase phase) was considered to develop …

Density functional theory studies of transition metal doped Ti3N2 MXene monolayer

IC Onyia, SO Ezeonu, D Bessarabov… - Computational Materials …, 2021 - Elsevier
Spin-polarized density functional theory calculations with van der Waals correction were
applied to investigate the presence of transition metal dopant atoms (Fe, Co, Ni, Pd and Pt) …

Low-temperature water electrolysis

KO Obodo, CNM Ouma, D Bessarabov - Power to Fuel, 2021 - Elsevier
Electrolytic hydrogen production is a promising option when relatively small or medium flows
of hydrogen are required. It is also often useful when high-purity hydrogen is required for a …