A5061595408- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- ZnO doping and properties
- Catalytic Processes in Materials Science
- Iron oxide chemistry and applications
- Biofuel production and bioconversion
- Metal-Organic Frameworks: Synthesis and Applications
- Nanomaterials for catalytic reactions
- Gas Sensing Nanomaterials and Sensors
- Phytochemicals and Antioxidant Activities
- Catalysis and Oxidation Reactions
- Adsorption and biosorption for pollutant removal
- Mine drainage and remediation techniques
- Nanoparticles: synthesis and applications
- Chalcogenide Semiconductor Thin Films
- CO2 Reduction Techniques and Catalysts
- Botanical Research and Applications
- Plant Micronutrient Interactions and Effects
- Catalysis for Biomass Conversion
- Sesame and Sesamin Research
- African Botany and Ecology Studies
- Carbon dioxide utilization in catalysis
- Healthcare and Environmental Waste Management
Addis Ababa University
2015-2025
Dilla University
2018-2025
Yancheng Institute of Technology
2018-2024
State Key Laboratory of Optoelectronic Materials and Technology
2020-2021
Sun Yat-sen University
2019-2021
National Taiwan University of Science and Technology
2014-2017
What are the bottlenecks for organometal halide perovskite solar cells to achieve stability required commercialization?
The energy band structure of Cu<sub>2</sub>O, Cu<sub>2</sub>O/CuO and Cu<sub>2</sub>O/CuO/Ni.
The graphene modified Cu<sub>2</sub>O nanowire array demonstrates improved photocurrent density and photostability, attributed to the synergetic effect of graphene.
Abstract Low‐cost, non‐noble‐metal electrocatalysts are required for direct methanol fuel cells, but their development has been hindered by limited activity, high onset potential, low conductivity, and poor durability. A surface electronic structure tuning strategy is presented, which involves doping of a foreign oxophilic post‐transition metal onto transition aerogels to achieve aerogel Ni 97 Bi 3 with unprecedented electrocatalytic activity durability in oxidation. Trace amounts atomically...
We synthesized a NiOOH decorated codoped (Sn, Zr) α-Fe<sub>2</sub>O<sub>3</sub>photoanode that results in enhanced photoelectrochemical performance and drastically lower onset potential.
A Cu<sub>2</sub>O/CuO heterostructure modified with CuS is proposed as a highly promising and stable photocathode for solar hydrogen production.
Abstract Insufficient catalytic activity and stability high cost are the barriers for Pt‐based electrocatalysts in wide practical applications. Herein, a hierarchically porous PtNi nanoframe/N‐doped graphene aerogel (PtNiNF‐NGA) electrocatalyst with outstanding performance toward methanol oxidation reaction (MOR) acid electrolyte has been developed via facile tert‐butanol‐assisted structure reconfiguration. The ensemble of high‐alloying‐degree‐modulated electronic correspondingly optimum MOR...
Because of their good mechanical flexibility and large exposed surfaces, two-dimensional (2D) nanostructures have attracted tremendous attention in the fields renewable energy storage conversion devices. However, fabricating 2D with a facile low-cost route remains big challenge. In this work, very thermal-decomposition strategy is proposed for preparing NiO porous nanosheets by using nickel chloride glucose as raw materials. contrast to microsized polyhedrons, show significantly improved...
A MOF derived porous P-doped C/Cu<sub>2</sub>O composite for phenol degradation and H<sub>2</sub> production was developed.
The biggest challenge of this century is the generation wastewater which released to environment due industrial expansion. Industrial development has caused release various pollutants including heavy metals such as Cd, Pb, and Cr into environment. In study, copper diphenylamine metal-organic framework (Cu-DPA MOF) been synthesized via hydrothermal method its adsorption capacity toward removal from was examined. efficiency by Cu-DPA MOF tested at optimized parameters optimal adsorbent dosage,...
The existence of heavy metals and coliform bacteria contaminants in aquatic system Akaki river basin, a sub city Addis Ababa, Ethiopia has become public concern as human population increases land development continues. Hence, it is the right time to design treatment technologies that can handle multiple pollutants.In this study, we prepared synthetic zeolites copper doped zeolite composite adsorbents cost effective simple approach simultaneously remove total coliforms from wastewater river....
Abstract Background Authentication of food and agricultural products is important to trace out the right product ensure customer’s preference their health. Sesame ( Sesamum indicum L . ) one most crops used for medicine in Ethiopia different varieties cultivars are produced regions country. This study was undertaken determine total flavonoid content, phenolic antioxidant activity, fatty acids profile black white sesame seed varieties. Samples were obtained from three major seed-producing...
Abstract As an emerging class of highly and hierarchically porous materials with continuous conductive metal network backbones, aerogels have unleashed tremendous potential in various fields, especially electrocatalysis. However, it remains a great challenge to maximize the utilization intrinsic structural advantages due collapse their structure during conventional electrode preparation caused by brittle character. Herein, general situ silicone‐confined gelation strategy is developed...
Background Oils from various sources are vital nutritional components with a variety of roles in our body. Niger seed ( Guzoita abyssinica ) is endemic to Ethiopia and among the major oil crops grown country. The fatty acid composition concentration other bioactive phytochemicals it vary species type, geographical origin, cultivation season, varietal types. present work investigated profile total phenolic (TPC), flavonoid content (TFC) antioxidant activity (AA) samples obtained five...
Hematite (α-Fe2O3) is a suitable candidate for photoelectrochemical water splitting due to its well-suited band structure, stability, and availability. However, using low external potential the major challenge that limits practical application of hematite. Here, we achieve very onset sequential surface treatment approach overcome two fundamental limiting factors, sluggish hole transfer, interfacial recombination, independently. First, heavily doped Fe2-xSnxO3 passivation layer was created by...
Activated carbon (AC) made of single-substrate agricultural wastes is considered to be a suitable raw material for the production low-cost adsorbents; however, large-scale application these materials highly limited by their low efficiency, seasonal scarcity, poor stability, surface area, and CO2 adsorption performance. In this study, composite activated (CAC) was prepared via controlled carbonization followed chemical activation four (i.e., peanut shell, coffee husk, corn cob, banana peel)...
Abstract Low‐cost, non‐noble‐metal electrocatalysts are required for direct methanol fuel cells, but their development has been hindered by limited activity, high onset potential, low conductivity, and poor durability. A surface electronic structure tuning strategy is presented, which involves doping of a foreign oxophilic post‐transition metal onto transition aerogels to achieve aerogel Ni 97 Bi 3 with unprecedented electrocatalytic activity durability in oxidation. Trace amounts atomically...