Bronze alloys with tin surface sites for selective electrochemical reduction of CO2

2018 ◽  
Vol 54 (99) ◽  
pp. 13965-13968 ◽  
Author(s):  
Anthony Vasileff ◽  
Chaochen Xu ◽  
Lei Ge ◽  
Yao Zheng ◽  
Shi-Zhang Qiao
Keyword(s):  
Electrochemical Reduction ◽  
High Selectivity ◽  
High Concentration ◽  
Low Concentration ◽  
Surface Sites ◽  
Tin Bronze ◽  
Reduction Of Co2

Low concentration tin bronze alloys show high selectivity for CO2 electroreduction to CO, while high concentration tin bronze alloys show high selectivity for formate.

Ultra-small Pd nanoparticles derived from a supramolecular assembly for enhanced electrochemical reduction of CO2 to CO

2019 ◽  
Vol 55 (66) ◽  
pp. 9805-9808 ◽  
Author(s):  
Ruru Chen ◽  
Minna Cao ◽  
Weiguang Yang ◽  
Huimin Wang ◽  
Suyuan Zhang ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Palladium Nanoparticles ◽  
High Selectivity ◽  
Supramolecular Assembly ◽  
Pd Nanoparticles ◽  
Reduction Of Co2

Well-dispersed palladium nanoparticles based on a supramolecular assembly exhibit high selectivity, activity and stability for the conversion of CO2 to CO.

Effect of KHCO3, K2CO3 and CO2 on the Electrochemical Reduction of CO2 into Organics on a Cu Electrode for the Solar Energy Conversion and Storage

2014 ◽  
Vol 1640 ◽  
Author(s):  
Heng Zhong ◽  
Katsushi Fujii ◽  
Yoshiaki Nakano
Keyword(s):  
Elevated Temperature ◽  
Carbon Source ◽  
Solar Energy ◽  
Energy Conversion ◽  
Electrochemical Reduction ◽  
Current Density ◽  
High Concentration ◽  
Energy Conversion And Storage ◽  
Reduction Of Co2 ◽  
And Storage

ABSTRACTElectrochemical reduction of CO2 into useful organics combined with photovoltaics is thought to be one of the promising ways to effectively store and transport the solar energy. In most of the previous researches, CO2 bubbling in different solutions were used as the electrolyte. However, the effects of the electrolyte and the CO2 bubbling are not clear. Therefore, in this research, the effects of different electrolyte, CO2 bubbling, concentration of the electrolyte and temperature on the electrochemical reduction of CO2 on a Cu working electrode were studied. The results showed that the form of the carbon source in the electrolyte, such as HCO3-, CO32- and H2CO3, had a strong effect on this reaction, which was controlled by the pH of the electrolyte. Furthermore, high concentration of the HCO3- and elevated temperature can strongly improve the reaction current density.

Electrochemical reduction of CO2 towards multi-carbon products via a two-step process

2021 ◽  
Vol 6 (4) ◽  
pp. 612-628
Author(s):  
Xianbiao Fu ◽  
Jiahao Zhang ◽  
Yijin Kang
Keyword(s):  
Electrochemical Reduction ◽  
Production Rate ◽  
High Selectivity ◽  
Alternative Route ◽  
Step Process ◽  
Fuels And Chemicals ◽  
Reduction Of Co2 ◽  
Industrial Relevance

The two-step electroreduction of CO2 to multi-carbon products with a high selectivity and production rate of industrial relevance provides an alternative route for converting CO2 to fuels and chemicals.

Electrochemical reduction of CO2 to ethylene glycol on imidazolium ion-terminated self-assembly monolayer-modified Au electrodes in an aqueous solution

2015 ◽  
Vol 17 (39) ◽  
pp. 26072-26078 ◽  
Author(s):  
Jun Tamura ◽  
Akihiko Ono ◽  
Yoshitsune Sugano ◽  
Chingchun Huang ◽  
Hideyuki Nishizawa ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ethylene Glycol ◽  
Electrochemical Reduction ◽  
Self Assembly ◽  
High Selectivity ◽  
Reduction Of Co2 ◽  
Imidazolium Ion

The IL-based SAMs-modified Au electrodes have high selectivity of products from CO2 to ethylene glycol (a maximum of 87%).

Study on Switch from High-concentration to Low-concentration Tacalcitol during Concomitant Use of Bath-PUVA Therapy

2007 ◽  
Vol 69 (6) ◽  
pp. 660-664
Author(s):  
Maki IWAKIRI ◽  
Noriko YASAKA ◽  
Kotaro ITO ◽  
Yuichi YOSHIDA ◽  
Yumiko KUBOTA ◽  
...  
Keyword(s):  
Puva Therapy ◽  
High Concentration ◽  
Low Concentration

ASSESSMENT OF HEAVY METAL CONCENTRATION IN COCONUT WATER

1970 ◽  
pp. 07-10
Author(s):  
MdDidarul Islam, Ashiqur Rahaman, Aboni Afrose
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Concentration ◽  
Coconut Water ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Toxic Heavy Metal ◽  
Low Concentration ◽  
Wet Ashing ◽  
Aas Method

This study was based on determining concentration of essential and toxic heavy metal in coconut water available at a local Hazaribagh area in Dhaka, Bangladesh. All essential minerals, if present in the drinking water at high concentration or very low concentration, it has negative actions. In this study, fifteen samples and eight heavy metals were analyzed by Atomic Absorption Spectroscopy (AAS) method which was followed by wet ashing digestion method. The concentration obtained in mg/l were in the range of 0.3 to 1.5, 7.77 to 21.2, 0 to 0.71, 0 to 0.9, 0 to 0.2, 0.9 to 17.3, 0.1 to 0.9, 0 to 0.9 and 0 to 0.7 for Fe, Ni, Cu, Cd, Cr, Zn, Pb and Se respectively. From this data it was concluded that any toxic heavy metals like Cd, Cr, Pb and Ni exceed their toxicity level and some essential nutrients were in low concentration in those samples. 

Assessment of micro and macro nutrients in poultry feeds available in Dhaka city, Bangladesh.

2017 ◽  
Vol 1 ◽  
pp. 264
Author(s):  
Md Didarul Islam ◽  
Ashiqur Rahaman ◽  
Fahmida Jannat
Keyword(s):  
Heavy Metals ◽  
Adverse Effect ◽  
The Other ◽  
Nutrient Level ◽  
Dhaka City ◽  
Toxic Heavy Metals ◽  
High Concentration ◽  
Low Concentration ◽  
Feed Formulation ◽  
Macro Nutrients

This study was based on to determine the concentration of macro and micro nutrients as well as toxic and nontoxic heavy metals present in the chicken feed available in Dhaka city of Bangladesh. All macro nutrients, if present in the feed at high concentration have some adverse effect, at the same time if this nutrient present in the feed at low concentration this have some adverse effect too. So that this nutrient level should be maintained at a marginal level. On the other side toxic heavy metals if present in the feed at very low concentration those can contaminate the total environment of the ecosystem. In this study six brand samples (starter, grower, finisher and layer) which was collected from different renowned chicken feed formulation industry in Bangladesh. Those samples were prepared for analysis by wet ashing and then metals were determined by Atomic Absorption Spectroscopy. It was found that 27.7 to 68.4, 57.3 to 121.9, 0.21 to 4.1, 0.32 to 2.1, 0.11 to 1.58, 0.28 to 2.11 and 0.28 to 1.78 for zinc, iron, copper, mercury, cadmium, nickel and cobalt respectively. It was found that essential macro and micro nutrients were present in the feed in low concentration on the other side mercury was present in high concentration in the feed samples.

Graphene Supported Tungsten Carbide as Catalyst for Electrochemical Reduction of CO2

2019 ◽  
Author(s):  
Sahithi Ananthaneni ◽  
Rees Rankin
Keyword(s):  
Tungsten Carbide ◽  
Electrochemical Reduction ◽  
Low Cost ◽  
Co2 Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Carbides ◽  
Depth Study ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction

<div>Electrochemical reduction of CO2 to useful chemical and fuels in an energy efficient way is currently an expensive and inefficient process. Recently, low-cost transition metal-carbides (TMCs) are proven to exhibit similar electronic structure similarities to Platinum-Group-Metal (PGM) catalysts and hence can be good substitutes for some important reduction reactions. In this work, we test graphenesupported WC (Tungsten Carbide) nanocluster as an electrocatalyst for the CO2 reduction reaction. Specifically, we perform DFT studies to understand various possible reaction mechanisms and determine the lowest thermodynamic energy landscape of CO2 reduction to various products such as CO, HCOOH, CH3OH, and CH4. This in-depth study of reaction energetics could lead to improvements and develop more efficient electrocatalysts for CO2 reduction.<br></div>

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