A5088744983- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Advancements in Battery Materials
- Copper-based nanomaterials and applications
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Electromagnetic wave absorption materials
- Extraction and Separation Processes
- Advanced Nanomaterials in Catalysis
- Iron oxide chemistry and applications
- Advanced Battery Materials and Technologies
- Advanced Antenna and Metasurface Technologies
- Scientific Computing and Data Management
- Nanomaterials and Printing Technologies
- Computational Physics and Python Applications
- Dielectric materials and actuators
- Biosensors and Analytical Detection
- Chemical and Physical Properties of Materials
- ZnO doping and properties
- Perovskite Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Nanofabrication and Lithography Techniques
University of Central Florida
2016-2018
Periodically patterned MoS<sub>2</sub>/TiO<sub>2</sub> heterostructures were rationally designed as nonmetal plasmonic photocatalysts for highly efficient hydrogen evolution.
Carbon nitride (g-C3N4) materials are electro-activated for oxygen reduction (ORR) and evolution (OER) reactions when they supported by conductive carbons. However, the electrocatalytic process on semiconductor-based heterostructures such as carbon-supported g-C3N4 still suffers from a huge energy loss because of poor electron mobility. Here, we demonstrated concept that conjugation with crystalline carbon can improve in-plane mobility make interior triazine units more electro-active ORR...
Abstract The oxygen reduction reaction (ORR) and the evolution (OER) in zinc–air batteries (ZABs) require highly efficient, cost‐effective, stable electrocatalysts as alternatives to high cost low poison resistant platinum group metals (PGM) catalysts. Although nitrogen‐doped carbon nanotube (NCNT) arrays are now capable of catalyzing ORR efficiently, their hydrophobic surface base‐growth mode found limit catalytic performance practical ZABs. Here, concept an apically dominant mechanism...
Abstract Porous carbon nitride (PCN) composites are fabricated using a top‐down strategy, followed by additions of graphene and CoS x nanoparticles. This subsequently enhances conductivity catalytic activity PCN (abbreviated as @PCN/rGO) is achieved one‐step sulfuration PCN/graphene oxides (GO) composite materials. As result, the as‐prepared @PCN/rGO catalysts display excellent stability toward both oxygen evolution reduction reactions, surpassing electrocatalytic performance shown...
Conductive polymer composites (CPCs) containing nanoscale conductive fillers have been widely studied for their potential use in various applications. In this paper, polypyrrole (PPy)/polydopamine (PDA)/silver nanowire (AgNW) with high electromagnetic interference (EMI) shielding performance, good adhesion ability and light weight are successfully fabricated via a simple situ polymerization method followed by mixture process. Benefiting from the intrinsic properties of PDA, mechanical...
Abstract In this work, a freestanding NiS 2 /FeS holey film (HF) is prepared after electrochemical anodic and chemical vapor deposition treatments. With the combination of good electrical conductivity structure, HF presents superior performance, due to following reasons: (i) Porous structure provides large surface area more active sites/channels/pathways enhance ion/mass diffusion. Moreover, porous can reduce damage from volumetric expansion. (ii) The as‐prepared electrode combines current...
A room-temperature synthesis of NiFe oxyfluoride (NiFeOF) holey film, using electrochemical deposition and anodic treatments, has been developed in this work. The synthetic route can preserve the fine nanoporous structure inside providing high surface area abundant reaction sites for electrocatalytic reactions. Both computational experimental studies demonstrate that NiFeOF film with highly porous metal residuals be used as a high-efficiency bifunctional catalyst overall water splitting....
Printed flexible electronics have been widely studied for their potential use in various applications. In this paper, a simple, low-cost method of fabricating electronic circuits with high conductivity 4.0 × 107 S·m–1 (about 70% the bulk copper) is demonstrated. Teslin paper substrate treated stannous chloride (SnCl2) colloidal solution to reduce ink absorption rate, and then catalyst inkjet-printed on its surface, followed by electroless deposition copper at low temperature. spite decrease...
Periodically patterned Au nanorods in TiO2 nanocavities (Au NRs@TiO2) were fabricated via magnetron sputtering followed by a thermal dewetting process. This innovative NRs@TiO2 heterostructure was used as plasmonic sensing platform for photoelectrochemical detection of glucose and lactose. possesses superior properties to other nanoparticle-based sensors because (i) localized surface plasmon resonance (LSPR) generated at Au/TiO2 interfaces enhanced sensitivity (lactose) amperometric...
A W(SexS1–x)2 nanoporous architecture (NPA) was developed by facile anodic and chemical vapor deposition treatments. The ternary NPA offers significant advantages toward high-efficiency hydrogen generation: (i) Nanoporous morphology provides more electrochemically active sites to split water. (ii) Lattice mismatch disordering in the mix-phased film introduce defects enhance catalytic activity. (iii) Conducting 1T phase formed strained facilitates electron transfer during reactions....
A switch from type-II to Z-scheme charge transfer by introducing Au and g-C<sub>3</sub>N<sub>4</sub> in a hybrid photocatalyst.
An ultrathin, freestanding NiSx nanoporous thin-film was developed by facile electrochemical deposition, etching, anodization and chemical vapor treatments. The shows excellent reversible insertion/extraction of Mg ions long-term cycling performance, which is an ideal energy storage device for small/micro-size electronic medical devices.
Novel Au@TiO2 plasmonic films were fabricated by individually placing Au nanoparticles into TiO2 nanocavity arrays through a sputtering and dewetting process. These discrete in nanocavities showed strong visible-light absorption due to the resonance. Photoelectrochemical studies demonstrated that developed exhibited significantly enhanced catalytic activities toward oxygen reduction reactions with an onset potential of 0.92 V (vs reversible hydrogen electrode), electron transfer number 3.94,...
A convenient and low-cost approach to fabricate a high-quality copper layer on epoxy resin <italic>via</italic> electroless plating for applications in electromagnetic interference (EMI) shielding is introduced this paper.
A novel Au<sub>x</sub>Cu–CuS@TiO<sub>2</sub> heterostructured catalyst with a periodic nanoporous morphology, exhibiting plasmon-enhanced glycerol oxidation, was developed.
Abstract In this work, a freestanding NiFe oxyfluoride (NiFeOF) holey film is prepared by electrochemical deposition and anodic treatments. With the combination of good electrical conductivity structure, NiFeOF offers superior performance with maximum specific capacitance 670 F cm −3 (134 mF −2 ), due to following reasons: (i) The residual metal alloy framework can be used as current collector improve electrode conductivity. Moreover, as‐prepared supercapacitor without reliance on binders...
In this work, a combination of bottom-up electrochemical deposition and top-down etching strategies followed by subsequent sulfuration treatment was employed to rationally synthesize nickel sulfide (NiS x) freestanding holey film (FHF). Owing the structure along with optimal electrochemically active surface area sites, as-prepared NiS x FHF showed an impressive bifunctional electrocatalytic performance toward both oxygen evolution reduction reactions. The features provide promising...
Abstract An Ar atmospheric treatment is rationally used to etch and activate hematite nanoflakes (NFs) as photoanodes toward enhanced photoelectrochemical water oxidation. The formation of a highly ordered nanorods (NRs) array containing high density oxygen vacancy successfully prepared through in situ reduction NFs atmosphere. Furthermore, (104) plane an iron suboxide layer at the absorber/back‐contact interface are formed. material defects produced by thermal oxidation method can be...
There are many reports on addressing the issues concerning low electronic and ionic conductivity of LiFePO4, but it is ignored by researchers that how to improve ageing resistance retain electrochemical properties LiFePO4 carbon-coated (LiFePO4/C) after long-term exposure ambient atmosphere. In this report, an ambient-temperature-and-pressure vapor deposition approach designed performance LiFePO4/C upon The mechanism based (1) a spontaneous process for evaporation pyrrole; (2) fine tuning...
A rationally designed CoSx-C3N4-graphene composite displays excellent activity and stability toward oxygen evolution reduction reactions, surpassing electrocatalytic performance shown by the state-of-the-art precious metal catalysts for Zn-air batteries. The remarkable of developed air-electrode is attributed to internally accessible electrochemical active sites facilitated transport intermediates in porous structure. This reported Yang co-workers article number 1701642.
The oxygen reduction (ORR) and evolution reactions (OER) in Zn-air batteries (ZABs) require highly efficient, cost-effective stable electrocatalysts as replacements to traditionally high cost, inconsistently low poison resistant Platinum group metals (PGM) catalysts. Although, nitrogen-doped carbon nanotube (NCNT) arrays have been developed over recent decades through various advanced technologies are now capable of catalyzing ORR efficiently, their underdeveloped bifunctional property,...