A5053127989- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Catalytic Processes in Materials Science
- Advancements in Battery Materials
- Advanced battery technologies research
- Layered Double Hydroxides Synthesis and Applications
- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- Analytical Chemistry and Sensors
- Catalysts for Methane Reforming
- Magnetic Properties and Synthesis of Ferrites
- Corrosion Behavior and Inhibition
- Magnesium Oxide Properties and Applications
- Fuel Cells and Related Materials
- Copper-based nanomaterials and applications
- Hydrogen embrittlement and corrosion behaviors in metals
- Catalysis and Oxidation Reactions
- Transition Metal Oxide Nanomaterials
- Polyoxometalates: Synthesis and Applications
- Multiferroics and related materials
- Electromagnetic wave absorption materials
- Inorganic Chemistry and Materials
Nirma (India)
2015-2024
Kannur University
2015-2024
Fritz Haber Institute of the Max Planck Society
2014-2016
Blackwood
1977
University of California, Los Angeles
1969-1975
Abstract Methanol, an important chemical, fuel additive, and precursor for clean fuels, is produced by hydrogenation of carbon oxides over Cu‐based catalysts. Despite the technological maturity this process, understanding apparently simple reaction still incomplete with regard to mechanism active sites. Regarding latter, recent progress has shown that stepped ZnO x ‐decorated Cu surfaces are crucial performance industrial Herein, we integrate insight additional experiments into a full...
The promoting effect of Al, Ga, and Mg on the support in Cu/ZnO catalysts for methanol synthesis has been investigated. Different unpromoted promoted ZnO supports were synthesized impregnated with Cu metal a subsequent step. All materials, supports, calcined activated characterized by various methods, including contactless (microwave) conductivity measurements under different gas atmospheres. Small amounts promoters found to exhibit significant influence properties oxide support, concerning...
Abstract For the advancement of electrochemical energy conversion and storage technologies, bifunctional electrocatalysts are crucial for efficiently driving both oxygen evolution (OER) reduction reactions (ORR). Cobalt‐based spinel oxides a class promising electrocatalysts. However their low electrical conductivity stability may hinder further improvement. A novel composite material composed NiCo 2 O 4 nanoparticles integrated with emerging two dimensional MXene nanosheets (NiCo /MXene) was...
Abstract Long‐term stability of catalysts is an important factor in the chemical industry. This often underestimated academic testing methods, which may lead to a time gap field catalytic research. The deactivation behavior industrially relevant Cu/ZnO/Al 2 O 3 catalyst for synthesis methanol reported over period 148 days time‐on‐stream (TOS). process was investigated by combination quasi situ and ex analysis techniques. results show that ZnO most dynamic species catalyst, whereas only...
Abstract We report the application of an optimised synthesis protocol a Cu/ZnO:Al catalyst. The different stages are all well‐characterised by using various methods with regard to (micro‐)structural, textural, solid‐state kinetic, defect and surface properties. low amount Al promoter (3 %) influences but does not generally change phase evolution known for binary Cu/ZnO catalysts. Its main function seems be introduction sites in ZnO doping. These as well large Cu area responsible N 2 O...
We introduce an environmentally sustainable approach to create uniformly nitrogen-incapacitated carbon nanotubes nucleated through cobalt nanoparticles. A unique architecture involving shells on Co nanoparticles exists along with the surface morphology prompted by existence of various nitrogen moieties. The are covered graphitic and confined within a defective porous framework, enhancing area porosity exposing large active centers for catalytic activities. Our uses single-step in situ...
The kinetics of the hydrogen evolution reaction on titanium in sulfuric acid solutions between pH 0.25 to 2.25 have been investigated. Tafel slope HER was 150 mV at all values, and electrochemical order 0.6 with respect ions. corrosion potential varied negligibly pH; ; . If it is assumed that a thin incipient oxide film covers surface active titanium, mechanism for based Temkin adsorption behavior, desorption as rate‐determining electrode step, dual barrier model consistent experimental results.
Development of highly active, stable, and noble-metal-free electrocatalysts holds great promise for efficient production hydrogen through water electrolysis. Transition metal dichalcogenides (TMDs) have been well-explored as a stable electrocatalyst the evolution reaction (HER). One ongoing challenges is to activate inert basal planes improve conductivity TMDs realize HER, but that requires laborious time-consuming chemical strategies utilizing high-temperature treatment methods. Herein, we...
The anodic and cathodic behavior of titanium in sulfuric acid the absence presence chloride ions have been investigated. Two stable corrosion potentials were observed. One was active region, other passive region. Neither potential appreciably affected by or pH changes between 0.25 –2.00. current not significantly up to 3.5% but decreased with increase pH. Passivation parameters either remained unchanged only slightly addition ions. rate h.e.r. Tafel region differential capacitance solutions...
The intercalation of amoxicillin trihydrate (AMOX) into layered zinc hydroxide (LZH) has been achieved via ion-exchange method. resulted nanocomposite (AMOX-LZH) thoroughly characterised by a number techniques including powder X-ray diffraction (PXRD), FT-IR spectroscopy, TGA/DTG analysis and scanning electron microscopy (SEM). PXRD results showed that the gallery height LZH was expanded from 9.57 to 11.97 Å, indicating AMOX anions were successfully intercalated interlayer space LZHs....
A series of cobalt ferrite samples were synthesized from a metal nitrate solution at constant pH between 9 and 12 by the controlled co-precipitation method without any surfactant.
Abstract Long‐term stability of catalysts is an important factor in the chemical industry. This often underestimated academic testing methods, which may lead to a time gap field catalytic research. The deactivation behavior industrially relevant Cu/ZnO/Al 2 O 3 catalyst for synthesis methanol reported over period 148 days time‐on‐stream (TOS). process was investigated by combination quasi situ and ex analysis techniques. results show that ZnO most dynamic species catalyst, whereas only...