In this current research, we described an enhanced power conversion efficiency of dye sensitized solar cell (DSSC) and fabricated through Few Layered Graphene (FLG)/CuO nanocomposite synthesized by ultrasonic assisted synthesis (UAS) by varying of FLG (1, 2 and 3 wt%) ratio. The FLG/CuOnanocomposites characteristic features understood through various microscopic techniques such as FE-SEM and HR...

Removal of hazardous organic dyes from polluted water bodies requires the introduction strong adsorbents and photocatalysts to industrial wastewaters. Herein, photocatalytic CeO2 nanoparticles CeO2/CuO nanocomposite were synthesized following a co-precipitation method for low cost elution methylene blue (MB) water. The crystallinity surface structure as-prepared materials have been analyzed usi...

Rapid degradation of cell performance still remains a significant challenge for proton exchange membrane fuel cell (PEMFC). In this work, we develop novel CeO2 nanocubes-graphene oxide nanocomposites as durable and highly active catalyst support for proton exchange membrane fuel cell. We show that the use of CeO2 as the radical scavenger in the catalysts remarkably improves the durability of th...

In this work, polypyrrole/CeO2 nanocomposite (NC) was synthesized in the presence of methylorange as a reactive self-degraded soft template. The field emission scanning electron microscopy(FESEM) images indicate that the CeO2 NPs have a nucleus effect and cause a homogenous PPycore–shell type morphology with an encapsulation of the CeO2 core by the PPy shell. The effect ofNC on acrylic waterbor...

We report the microwave synthesis and characterization of Au and Pd nanoparticle catalysts supported on CeO2, CuO, and ZnO nanoparticles for CO oxidation. The results indicate that supported Au/CeO2 catalysts exhibit excellent activity for low-temperature CO oxidation. The Pd/CeO2 catalyst shows a uniform dispersion of Pd nanoparticles with a narrow size distribution within the ceria support. A...

Abstract This study focuses on the variation in activity-controlling factors during CO catalytic ignition over a CuO–CeO2 catalyst. The activity for combustion follows decreasing order of > CuO CeO2. Except inactive CeO2, increasing temperature induces to achieve self-sustained and CuO–CeO2. However, provides enough copper sites adsorb CO, abundant active lattice oxygen, thus obtaining higher h...

Chemical warfare agents (CWAs) are highly toxic and fast-acting easy to cause large-scale poisoning humans livestock after being released. The activated carbon used for CWAs adsorption has disadvantages of limited capacity, aging deactivation. Metal oxides have environmental stability, they characterized by long lasting broad spectrum when thermal catalytic decomposition. Therefore, in this stu...

Current industrial catalysts for the water-gas shift reaction are commonly mixtures of Fe-Cr and Zn-Al-Cu oxides, used at temperatures between 350-500oC and 180250oC, respectively. These oxide catalysts are pyrophoric and normally require lengthy and complex activation steps before usage. Improved catalysts are being sought, particularly for lower temperature (e.g., at T<150oC, equilibrium lowe...

Cu-based catalysts are promising for CO oxidation applications with catalyst deactivation being a major barrier. We start CuO/Al2O3 and find that while the conversion decreases, CO2 accumulates average Cu chemical state stays same. It suggests self-poisoning, i.e., desorption is rate-determining step. Subsequently, experiments performed to prove this hypothesis by showing (1) adsorption inhibit...