Navegação Ciências Exatas e da Terra por Autor "Khan, Sherdil"
Resultados 1-10 de 10
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3-Mercaptopropionic, 4-mercaptobenzoic, and oleic acid-capped CdSe quantum dots : interparticle distance, anchoring groups, and surface passivation
Santos, José Augusto Lucena dos; Baum, Fabio; Kohlrausch, Emerson Cristofer; Tavares, Fabiele Collovini; Pretto, Tatiane; Santos, Francisco Paulo dos; Ferreira, Jacqueline; Khan, Sherdil; Santos, Marcos José Leite (2019) [Artigo de periódico]The optoelectronic properties of quantum dots are strongly controlled by the chemical nature of their surface-passivating ligands. In this work, we present the synthesis, characterization, and surface modification of CdSe ... -
Application of Taguchi method to study morphological evolution of TiO2 nanotubes obtained via anodization process
Bervian, Alexander; Coser, Eliane; Pianaro, Sidnei Antonio; Aguzzoli, Cesar; Pedott, Alexandre Homsi; Khan, Sherdil; Malfatti, Célia de Fraga (2018) [Artigo de periódico]The growth of titanium dioxide nanotubes (TiO2) via anodization process depends on the controlling parameters such as applied potential, anodization time, and electrolyte composition. In the present work, the Taguchi method ... -
Effect of thermal calcinations on the charge transfer resistance of tantalum nitride nanotubes
Khan, Sherdil; Severo, Tiago Cassol; Santos, Marcos José Leite; Teixeira, Sergio Ribeiro (2016) [Artigo de periódico]Nanotubes of Ta3N5 were synthesized by thermal Nitridation of Ta2O5 nanotubes under ammonia gas environment. The effect of Nitridation temperature and time was evaluated. Electrochemical impedance spectroscopy was applied ... -
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance
Bervian, Alexander; Coser, Eliane; Khan, Sherdil; Pianaro, Sidnei Antonio; Aguzzoli, Cesar; Marcuzzo, Jossano Saldanha; Baldan, Mauricio Ribeiro; Malfatti, Célia de Fraga (2017) [Artigo de periódico]The evolution of TiO2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, ... -
Experimental and DFT study of GO-decorated CaO quantum dots for catalytic dye degradation and bactericidal potential
Khan, Mahreen; Ikram, Muhammad; Haider, Ali; Ul-Hamid, Anwar; Ullah, Hameed; Shahzadi, Iram; Khan, Sherdil; Kanoun, Mohammed Benali; Goumri-Said, Souraya; Medina, Francisco; Nabgan, Walid (2023) [Artigo de periódico]This research lays the groundwork for preparing graphene oxide (GO)-doped CaO nanocomposites for efficient antibacterial potential and dye degradation. The study aimed to reduce the recombination rate of the electron hole ... -
Ionic liquid based dopant-free band edge shift in BiVO4 particles for photocatalysis under simulated sunlight irradiation
Khan, Niqab; Wolff, Rogério Nunes; Ullah, Hameed; Chacón, Gustavo; Rosa, Washington Santa; Dupont, Jairton; Gonçalves, Renato Vitalino; Khan, Sherdil (2022) [Artigo de periódico]Foreign elemental doping is a widely utilized strategy to modify the electronic structure of semiconductors. Herein, we present a dopant-free novel synthesis approach to control the electronic structure of a semiconductor. ... -
Peering into the formation of template-free hierarchical flowerlike nanostructures of SrTiO3
Thesing, Anderson; Damiani, Eduardo João; Loguercio, Lara Fernandes; Demingos, Pedro Guerra; Muniz, André Rodrigues; Carreño, Neftalí Lenin Villarreal; Khan, Sherdil; Santos, Marcos José Leite; Brolo, Alexandre G.; Ferreira, Jacqueline (2020) [Artigo de periódico]The development of efficient advanced functional materials is highly dependent on properties such as morphology, crystallinity, and surface functionality. In this work, hierarchical flowerlike nanostructures of SrTiO3 have ... -
Photocatalytic performance of Ta2O5/BiVO4 heterojunction for hydrogen production and methylene blue photodegradation
Gonçalves, Henrique Barbosa; Freitas, Denilson; Souza, Emanuely; Melo Junior, Mauricio A.; González-Moya, Johan Rene; Padrón-Hernández, Eduardo; Khan, Sherdil; Machado, Giovanna (2022) [Artigo de periódico]Forming semiconductor heterojunction is promising for improved photocatalytic performance due to synergistic combination of the best properties of each material. The present study reports a simple hydrothermal strategy to ... -
Photoelectrochemical study of Ta3N5 nanotubes for water splitting
Khan, Sherdil; Santos, Marcos José Leite; Dupont, Jairton; Teixeira, Sergio Ribeiro (2014) [Artigo de periódico]Nanotubes (NTs) of Ta3N5 were synthesized by nitridation of Ta2O5 NTs. The samples were studied by scanning electron microscopy, UV-VIS spectrophotometry, x-ray diffraction and photoelectrochemical (PEC) measurements carried ... -
Polypyrrole/ionic liquid/Au nanoparticle counter-electrodes for dye-sensitized solar cells : improving charge-transfer resistance at the CE/electrolyte interface
Loguercio, Lara Fernandes; Matos, Carolina Ferreira de; Oliveira, Matheus Costa de; Marin, Graciane; Khan, Sherdil; Dupont, Jairton; Teixeira, Sergio Ribeiro; Balzaretti, Naira Maria; Ferreira, Jacqueline; Santos, Marcos José Leite (2019) [Artigo de periódico]To provide a viable alternative for counter electrodes used in dye sensitized solar cells, polypyrrole (PPy) based films have been synthesized via electrochemical deposition in the presence of the ionic liquid 1-butyl-3- ...