Multi-metallic Layered Catalysts for Stable Electrochemical CO2 Reduction to Formate and Formic Acid
We report the development of bismuth (Bi) gas diffusion electrodes on a polytetrafluoroethylene-based electrically conductive silver (Ag) substrate (Ag@Bi), which exhibits high Faradaic efficiency (FE) for formate of over 90% in 1 M KOH and 1 M KHCO3 electrolytes. The catalyst also shows high selectivity of formic acid above 85% in 1 M NaCl catholyte, which has a bulk pH of 2-3 during ECR, at current densities up to 300 mA cm-2. In 1 M KHCO3 condition, the Ag@Bi maintains a formate FE above 90% for at least 500 hours at the current density of 100 mA cm-2. We found that Ag@Bi catalysts degrade over time due to the leaching ...
Source: ChemSusChem - March 15, 2024 Category: Chemistry Authors: Tu Nguyen Behnam Nourmohammadi Khiarak Zijun Xu Amirhossein Farzi Sharif Sadaf A Seifitokaldani Cao-Thang Dinh Source Type: research
Interface Defects Dependent on Perovskite Annealing Temperature for NiOX-Based Inverted CsPbI2Br Perovskite Solar Cells
In this study, a new type of interface defects in NiOX-based CsPbI2Br solar cells is reported. That is the Pb2+ from CsPbI2Br perovskites can diffuse into the lattice of NiOX surface as the annealing temperature of perovskites changes. The diffusion of Pb2+ increases the ratio of Ni3+/Ni2+ on the surface of NiOX, leading to an increase in the density of trap state at the interface between NiOX and perovskites, which eventually results in a serious decline in the photovoltaic performance of solar cells.PMID:38487956 | DOI:10.1002/cssc.202301722 (Source: ChemSusChem)
Source: ChemSusChem - March 15, 2024 Category: Chemistry Authors: Zhaoxuan Huang Nan Tian Shiyu Duan Jicheng Zhang Disheng Yao Guoyuan Zheng Yanhan Yang Bing Zhou Source Type: research
Multifunctional Interface Modification Enables Efficient and Stable HTL-Free Carbon-Electroded CsPbI2Br Perovskite Solar Cells
ChemSusChem. 2024 Mar 15:e202400223. doi: 10.1002/cssc.202400223. Online ahead of print.ABSTRACTIn recent years, hole transport layer-free all-inorganic CsPbI2Br carbon-electroded perovskite solar cells (C-PSCs) have garnered significant attention due to a trade-off between stability and photovoltaic performance. However, there are inevitably many defects generated at the surfaces or grain boundaries of CsPbI2-Br perovskite films, which will serve as carrier non-radiative recombination centers, and CsPbI2-Br perovskite films are sensitive to water molecules to degrade, together with energy level mismatch between CsPbI2Br p...
Source: ChemSusChem - March 15, 2024 Category: Chemistry Authors: Wei Zhao Lin Wu Jian-Lin Chen Jiayao Ju Yuxi Zeng Zihan Wu Jintao He Jincheng Huang Zhuoyin Peng Jian Chen Source Type: research
Multi-metallic Layered Catalysts for Stable Electrochemical CO2 Reduction to Formate and Formic Acid
We report the development of bismuth (Bi) gas diffusion electrodes on a polytetrafluoroethylene-based electrically conductive silver (Ag) substrate (Ag@Bi), which exhibits high Faradaic efficiency (FE) for formate of over 90% in 1 M KOH and 1 M KHCO3 electrolytes. The catalyst also shows high selectivity of formic acid above 85% in 1 M NaCl catholyte, which has a bulk pH of 2-3 during ECR, at current densities up to 300 mA cm-2. In 1 M KHCO3 condition, the Ag@Bi maintains a formate FE above 90% for at least 500 hours at the current density of 100 mA cm-2. We found that Ag@Bi catalysts degrade over time due to the leaching ...
Source: ChemSusChem - March 15, 2024 Category: Chemistry Authors: Tu Nguyen Behnam Nourmohammadi Khiarak Zijun Xu Amirhossein Farzi Sharif Sadaf A Seifitokaldani Cao-Thang Dinh Source Type: research
Interface Defects Dependent on Perovskite Annealing Temperature for NiOX-Based Inverted CsPbI2Br Perovskite Solar Cells
In this study, a new type of interface defects in NiOX-based CsPbI2Br solar cells is reported. That is the Pb2+ from CsPbI2Br perovskites can diffuse into the lattice of NiOX surface as the annealing temperature of perovskites changes. The diffusion of Pb2+ increases the ratio of Ni3+/Ni2+ on the surface of NiOX, leading to an increase in the density of trap state at the interface between NiOX and perovskites, which eventually results in a serious decline in the photovoltaic performance of solar cells.PMID:38487956 | DOI:10.1002/cssc.202301722 (Source: ChemSusChem)
Source: ChemSusChem - March 15, 2024 Category: Chemistry Authors: Zhaoxuan Huang Nan Tian Shiyu Duan Jicheng Zhang Disheng Yao Guoyuan Zheng Yanhan Yang Bing Zhou Source Type: research
Multifunctional Interface Modification Enables Efficient and Stable HTL-Free Carbon-Electroded CsPbI2Br Perovskite Solar Cells
ChemSusChem. 2024 Mar 15:e202400223. doi: 10.1002/cssc.202400223. Online ahead of print.ABSTRACTIn recent years, hole transport layer-free all-inorganic CsPbI2Br carbon-electroded perovskite solar cells (C-PSCs) have garnered significant attention due to a trade-off between stability and photovoltaic performance. However, there are inevitably many defects generated at the surfaces or grain boundaries of CsPbI2-Br perovskite films, which will serve as carrier non-radiative recombination centers, and CsPbI2-Br perovskite films are sensitive to water molecules to degrade, together with energy level mismatch between CsPbI2Br p...
Source: ChemSusChem - March 15, 2024 Category: Chemistry Authors: Wei Zhao Lin Wu Jian-Lin Chen Jiayao Ju Yuxi Zeng Zihan Wu Jintao He Jincheng Huang Zhuoyin Peng Jian Chen Source Type: research
Acidic Oxygen Evolution Reaction: Fundamental Understanding and Electrocatalysts Design
ChemSusChem. 2024 Mar 13:e202400239. doi: 10.1002/cssc.202400239. Online ahead of print.ABSTRACTWater electrolysis driven by "green electricity" is an ideal technology to realize energy conversion and store renewable energy into hydrogen. With the development of proton exchange membrane (PEM), water electrolysis in acidic media suitable for many situations with an outstanding advantage of high gas purity has attracted significant attention. Compared with hydrogen evolution reaction (HER) in water electrolysis, oxygen evolution reaction (OER) is a kinetic sluggish process that needs a higher overpotential. Especially in aci...
Source: ChemSusChem - March 14, 2024 Category: Chemistry Authors: Jiao Li Weichen Tian Qi Li Shenlong Zhao Source Type: research
Ultrafine Ni-MoOx Nanoparticles Anchored on Nitrogen-Doped Carbon Nanosheets: A Highly Efficient Noble-Metal-Free Catalyst for Ammonia Borane Hydrolysis
ChemSusChem. 2024 Mar 14:e202400415. doi: 10.1002/cssc.202400415. Online ahead of print.ABSTRACTThe development of low-cost and high-efficiency catalysts for the hydrolytic dehydrogenation of ammonia borane (AB, NH3BH3) is still a challenging technology. Herein, ultrafine MoOx-doped Ni nanoparticles (~3.0 nm) were anchored on g-C3N4@glucose-derived nitrogen-doped carbon nanosheets via a phosphate-mediated method. The strong adsorption of phosphate-mediated nitrogen-doped carbon nanosheets (PNCS) for metal ions is a key factor for the preparation of ultrasmall Ni nanoparticles (NPs). Notably, the alkaline environment formed...
Source: ChemSusChem - March 14, 2024 Category: Chemistry Authors: Weihong Liu Longhua Yao Xiongfei Sun Wei Wang Gang Feng Qilu Yao Lei Zhang Zhang-Hui Lu Source Type: research
Sustainable Production of Propionic acid and Derivatives on Industrial Scale
ChemSusChem. 2024 Mar 14:e202301666. doi: 10.1002/cssc.202301666. Online ahead of print.ABSTRACTPropionic acid is, after acetic, formic and 2-ethylhexanoic acids, the fourth largest industrially produced carboxylic acid in terms of capacity. In the last decades the technology to produce propionic acid has evolved and more efficient, i. e. more sustainable processes, based on the hydroformylation of ethylene to propionaldehyde and subsequent oxidation with O2 to propionic acid are capturing the growing capacity for this product. For this reason, a perspective is given on developments in sustainable production of propionic a...
Source: ChemSusChem - March 14, 2024 Category: Chemistry Authors: Joaquim Henrique Teles Source Type: research
Optimized Incorporation of Furan into Diketopyrrolopyrrole-Based Conjugated Polymers for Organic Field-Effect Transistors
ChemSusChem. 2024 Mar 14:e202400171. doi: 10.1002/cssc.202400171. Online ahead of print.ABSTRACTFlexible electronics have received considerable attention in the past decades due to their promising application in rollable display screens, wearable devices, implantable devices, and others electronic applications. In particular, conjugated polymers are favored for flexible electronics due to their mechanical flexibility and potential for solution-processed fabrication techniques, such as blade-coating, roll-to-roll printing, and high-throughput printing allowing for high-performance transistor devices. Thiophene is the prevai...
Source: ChemSusChem - March 14, 2024 Category: Chemistry Authors: Justin Neu Kan Ding Shubin Liu Harald Ade Jie Xu Wei You Source Type: research
Effect of Gas Composition on Temperature and CO2 Conversion in a Gliding Arc Plasmatron reactor: Insights for Post-plasma Catalysis from Experiments and Computation
ChemSusChem. 2024 Mar 14:e202400169. doi: 10.1002/cssc.202400169. Online ahead of print.ABSTRACTPlasma-based CO2 conversion has attracted increasing interest. However, to understand the impact of plasma operation on post-plasma processes, we studied the effect of adding N2, N2/CH4 and N2/CH4/H2O to a CO2 gliding arc plasmatron (GAP) to obtain valuable insights into their impact on exhaust stream composition and temperature, which will serve as feed gas and heat for post-plasma catalysis (PPC). Adding N2 improves the CO2 conversion from 4% to 13%, and CH4 addition further promotes it to 44%, and even to 61% at lower gas flo...
Source: ChemSusChem - March 14, 2024 Category: Chemistry Authors: Wencong Xu Senne Van Alphen Vladimir V Galvita Vera Meynen Annemie Bogaerts Source Type: research
Photocatalyzed Oxidative Tandem Reaction Mediated by Bipyridinium for Multifunctional Derivatization of Alcohols
ChemSusChem. 2024 Mar 13:e202301911. doi: 10.1002/cssc.202301911. Online ahead of print.ABSTRACTThe multifunctional derivatization of alcohols has been achieved by the bipyridinium-based conjugated small molecule photocatalysts with redox center and Lewis acid site. Besides exhibiting high activity in the selective generation of aldehydes/ketones, acids from alcohols through solvent modulation, this system renders the first selective synthesis of esters via an attractive cross-coupling pattern, whose reaction route is significantly different from the traditional condensation of alcohols and acids or esterification from hem...
Source: ChemSusChem - March 13, 2024 Category: Chemistry Authors: Xin-Rong Yao Meng-Ze Jia Xiao-Li Miao Shi-Kai Yu Yun-Rui Chen Jia-Qi Pan Jie Zhang Source Type: research
Optimized Transition Metal Phosphides for Direct Seawater Electrolysis: Current Trends
ChemSusChem. 2024 Mar 13:e202301926. doi: 10.1002/cssc.202301926. Online ahead of print.ABSTRACTSeawater electrolysis presents a viable route for sustainable large-scale hydrogen production, yet its practical application is hindered by several technical challenges. These include the sluggish kinetics of hydrogen evolution, poor stability, cation deposition at the cathode, electrode corrosion, and competing chloride oxidation at the anode. To overcome these obstacles, the development of innovative electrocatalysts is crucial. Transition metal phosphides (TMPs) have emerged as promising candidates owing to their superior cat...
Source: ChemSusChem - March 13, 2024 Category: Chemistry Authors: Yong Li Tianran Xin Zongcheng Cao Weiran Zheng Peng He Lawrence Yoon Suk Lee Source Type: research
Preparation of Sulfonyl Chlorides by Oxidative Chlorination of Thiols and Disulfides using HNO3/HCl/O2 in a Flow Reactor
ChemSusChem. 2024 Mar 13:e202400292. doi: 10.1002/cssc.202400292. Online ahead of print.ABSTRACTA continuous flow metal-free protocol for the synthesis of sulfonyl chlorides from thiols and disulfides in the presence of nitric acid, hydrochloric acid and oxygen was developed. The influence of the reaction parameters was investigated under batch and flow conditions. Online 19F NMR was successfully implemented to investigate different reaction conditions within a single experiment. The sulfonyl chlorides were isolated (mostly in 70-81% yield) after performing a simple aqueous washing procedure. In particular, the protocol wa...
Source: ChemSusChem - March 13, 2024 Category: Chemistry Authors: Niklas Sulzer Dominik Polterauer Christopher Hone C Oliver Kappe Source Type: research
Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems
ChemSusChem. 2024 Mar 13:e202301755. doi: 10.1002/cssc.202301755. Online ahead of print.ABSTRACTThe urgent need to address the global energy and environmental crisis necessitates the development of efficient solar-power harvesting systems. Among the promising candidates, hierarchical inorganic nanostructures stand out due to their exceptional attributes, including a high specific surface area, abundant active sites, and tunable optoelectronic properties. In this comprehensive review, we delve into the fundamental principles underlying various solar energy harvesting technologies, including dye-sensitized solar cells (DSSCs...
Source: ChemSusChem - March 13, 2024 Category: Chemistry Authors: Manjunatha C Chandresh Kumar R Manmadha Rao B Girish Kumar S Varun S Kartik R Gyanprakash Maurya Karthik B Swathi C Mohtada Sadrzadeh Ajit Khosla Source Type: research
