A GaN:Sn nanoarchitecture integrated on a silicon platform for converting CO2 to HCOOH by photoelectrocatalysis

2019 ◽  
Vol 12 (9) ◽  
pp. 2842-2848 ◽  
Author(s):  
Baowen Zhou ◽  
Xianghua Kong ◽  
Srinivas Vanka ◽  
Shaobo Cheng ◽  
Nick Pant ◽  
...  
Keyword(s):  
Formic Acid ◽  
High Efficiency ◽  
Reaction Path ◽  
Planar Silicon ◽  
Low Overpotential ◽  
Favorable Reaction

A unique GaN:Sn nanoarchitecture is integrated on planar silicon to demonstrate an energetically favorable reaction path for aqueous photoelectrochemical CO2 reduction towards formic acid with high efficiency at low overpotential.

scholarly journals Effect of Na2CO3 degumming concentration on LiBr-formic acid-silk fibroin solution properties

2016 ◽  
Vol 20 (3) ◽  
pp. 985-991
Author(s):  
Zhi Liu ◽  
Yuqin Wan ◽  
Hao Dou ◽  
Ji-Huan He
Keyword(s):  
Formic Acid ◽  
Silk Fibroin ◽  
Sodium Carbonate ◽  
High Efficiency ◽  
Lithium Bromide ◽  
Solution Properties ◽  
Acid System ◽  
Acid Dissolution ◽  
Carbonate Concentration ◽  
Degumming Process

Salt-acid system has been proved to be of high efficiency for silk fibroin dissolution. Using salt-acid system to dissolve silk, native silk fibrils can be preserved in the regenerated solution. Increasing experiments indicate that acquirement of silk fibrils in solution is strongly associated with the degumming process. In this study, the effect of sodium carbonate degumming concentration on solution properties based on lithium bromide-formic acid dissolution system was systematically investigated. Results showed that the morphology transformation of silk fibroin in solution from nanospheres to nanofibrils is determined by sodium carbonate concentration during the degumming process. Solutions containing different silk fibroin structure exhibited different rheological behaviors and different electrospinnability, leading to different electrospun nanofibre properties. The results have guiding significance for preparation and application of silk fibroin solutions.

Nanoporous Cu/Ni oxide composites: efficient catalysts for electrochemical reduction of CO2in aqueous electrolytes

2018 ◽  
Vol 20 (16) ◽  
pp. 3705-3710 ◽  
Author(s):  
Dexin Yang ◽  
Qinggong Zhu ◽  
Xiaofu Sun ◽  
Chunjun Chen ◽  
Lu Lu ◽  
...  
Keyword(s):  
Formic Acid ◽  
Electrochemical Reduction ◽  
Aqueous Electrolyte ◽  
Aqueous Electrolytes ◽  
Reduction Activity ◽  
Low Overpotential ◽  
Oxide Composites ◽  
Ni Oxide

Nanoporous Cu/Ni oxide composites can improve CO2reduction activity for producing formic acid in an aqueous electrolyte with a low overpotential.

CO2 reduction to formic acid at low overpotential on BDD electrodes modified with nanostructured CeO2

2019 ◽  
Vol 7 (30) ◽  
pp. 17896-17905 ◽  
Author(s):  
Enrico Verlato ◽  
Simona Barison ◽  
Yasuaki Einaga ◽  
Stefano Fasolin ◽  
Marco Musiani ◽  
...  
Keyword(s):  
Formic Acid ◽  
Co2 Reduction ◽  
Faradaic Efficiency ◽  
Low Overpotential

Nanostructured CeO2/BDD electrodes produce formic acid with good faradaic efficiency at very low overpotential (>40% at η ≈ 40 mV).

scholarly journals Highly efficient, selective, and durable photocatalytic system for CO2 reduction to formic acid

2015 ◽  
Vol 6 (12) ◽  
pp. 7213-7221 ◽  
Author(s):  
Yusuke Tamaki ◽  
Kazuhide Koike ◽  
Osamu Ishitani
Keyword(s):  
Formic Acid ◽  
High Efficiency ◽  
Co2 Reduction ◽  
Photocatalytic Reduction ◽  
Highly Efficient ◽  
Photocatalytic System

Photocatalytic reduction of CO2 to formic acid with high efficiency, durability, and rate.

Hierarchical Cu pillar electrodes for electrochemical CO2 reduction to formic acid with low overpotential

2016 ◽  
Vol 18 (8) ◽  
pp. 6252-6258 ◽  
Author(s):  
Jaehoon Chung ◽  
Da Hye Won ◽  
Jaekang Koh ◽  
Eun-Hee Kim ◽  
Seong Ihl Woo
Keyword(s):  
Electrochemical Performance ◽  
Formic Acid ◽  
Surface Area ◽  
Co2 Reduction ◽  
Lattice Property ◽  
Cu Pillar ◽  
Electrochemical Co2 Reduction ◽  
Low Overpotential ◽  
Enhanced Electrochemical Performance

Hierarchical Cu pillar electrodes have shown enhanced electrochemical performance for CO2 reduction due to their increased surface area and controlled lattice property.

High-efficiency palladiumcatalysts supported on ppy-modified C60for formic acid oxidation

2011 ◽  
Vol 47 (6) ◽  
pp. 1752-1754 ◽  
Author(s):  
Zhengyu Bai ◽  
Lin Yang ◽  
Yuming Guo ◽  
Zhi Zheng ◽  
Chuangang Hu ◽  
...  
Keyword(s):  
Formic Acid ◽  
High Efficiency ◽  
Formic Acid Oxidation ◽  
Acid Oxidation

scholarly journals Integrated and Sustainable Preparation of Functional Nanocellulose via Formic Acid/Choline Chloride Solvents Pretreatment

2021 ◽  
Author(s):  
Meiyan Wu ◽  
Keyu Liao ◽  
Chao Liu ◽  
Guang Yu ◽  
Mehdi Rahmaninia ◽  
...  
Keyword(s):  
Formic Acid ◽  
Ball Milling ◽  
High Efficiency ◽  
Choline Chloride ◽  
Cellulose Nanofibrils ◽  
Deep Eutectic Solvents ◽  
Whole Process ◽  
Lower Viscosity ◽  
Oil In Water ◽  
Oil Water

Abstract Formic acid/choline chloride (F-DES), one of high-efficiency deep eutectic solvents (DES) for lignocellulose pretreatment, has great potential in the production of nanocellulose (NC). In this work, the integrated preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) was developed using F-DES pretreatment and the followed ball milling. Then, the properties of the resultant NC products (F-NC) were comprehensively investigated. The NC samples obtained from direct ball milling and urea/choline chloride (U-DES) plus ball milling (i.e. B-NC, and U-NC, accordingly) were used for comparison. Characterization results showed that similar to U-DES, F-DES pretreatment could effectively enhance the fibrillation of cellulose and facilitate the followed ball milling for the production of NC, and the yields of NC (CNCs plus CNFs) were over 95%. Yet, compared with B-NC and U-NC, F-NC with surface ester groups had better ability to stabilize the oil/water interface for further preparation of oil-in-water Pickering emulsion. In addition, F-DES has lower viscosity than U-DES. The recovery rate of F-DES could reach 92% after three cycles, and the recycled F-DES without obvious increase of viscosity showed better reusability to make the whole process clean and sustainable.

scholarly journals Arc Plasma Deposited Copper and Gold Nanoparticles on FTO Substrate for Electrochemical Reduction of CO2

2019 ◽  
Vol 3 (1) ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
High Efficiency ◽  
Plasma Deposition ◽  
Arc Plasma ◽  
Faradaic Efficiency ◽  
Electro Deposition ◽  
Electro Catalysis ◽  
Reduction Of Co2

A composite of copper and gold nanoparticles was deposited using arc plasma deposition on the conductive FTO substrate for the electrochemical reduction of CO2 . The use of arc plasma deposition system allows the nanoparticles to be implanted onto the substrate as opposed to the commonly used methods of vacuum deposition or electro deposition. This unique structure reduced the CO2 to produce formic acid with up to 60% faradaic efficiency. Copper and gold nanoparticles have never previously been reported to produce formic acid with such high efficiency, suggesting that the co-deposition technique of implanted nanoparticles can provide an interesting future avenue in the field of electrochemical reduction of CO2 . The surface analysis of the electrodes is presented here along with potential dependent faradaic efficiency of the electro catalysis.

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