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High-Density CuBiO Photocathodes Using Well-Textured Buffer Layers and Their Unassisted Solar Hydrogen Production Performances.
Small
January 2025
School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, Republic of Korea.
Solar hydrogen production using photoelectrochemical (PEC) cells requires the selection of cost-effective materials with high photoactivity and durability. CuBiO photocathodes possess an appropriate bandgap for efficient hydrogen production. However, their performance is limited by poor charge transport and interface voids formed due to the porous structure during annealing, which complicates the deposition of passivation overlayers.
View Article and Find Full Text PDFRare-earth oxide promoted Pd electrocatalyst for formic acid oxidation.
Dalton Trans
January 2025
Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China.
The development of Pd-based materials with high activity and long-term stability is crucial for their practical applications as an anode catalyst in direct formic acid fuel cells. Herein, we reveal that the catalytic activity of Pd towards formic acid oxidation can be enhanced by incorporation of a series of rare-earth oxides, including ScO, CeO, LaO, and PrO. For example, Pd nanoparticles incorporated with ScO supported on nitrogen-doped reduced graphene oxide (Pd-ScO/N-rGO-, = 1/3, 1/2, 2/3, 1, and 3/2; "" denotes the molar ratio of Pd : Sc) can be obtained using a sodium borohydride reduction method.
View Article and Find Full Text PDFImproving the Stability of Gas Diffusion Electrodes for CO Electroreduction to Formate with Sn and In-Based Catalysts at 500 mA cm: Effect of Electrode Design and Operation Mode.
ACS Omega
January 2025
Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver V6T 1Z3, Canada.
The electrochemical carbon dioxide reduction reaction (CORR) using renewable electricity sources could provide a sustainable solution for generating valuable chemicals, such as formate salt or formic acid. However, an efficient, stable, and scalable electrode generating formate at industrially viable current densities (>100 mA cm) is yet to be developed. Sn or In-based catalysts in gas diffusion electrodes (GDE) can efficiently produce formate.
View Article and Find Full Text PDFOrganoboron-Functionalized Metal-Organic Nanosheets for Highly Efficient CO Fixation Mediated by Frustrated Lewis Pairs.
Angew Chem Int Ed Engl
January 2025
Department of Chemistry, University of North Texas CHEM 305D. 1508 W Mulberry St, Denton, Texas, 76201, United States.
Converting CO to high-value fine chemicals represents one of the most promising approaches to combat global warming and subsequently achieve a sustainable carbon cycle. Herein, we contribute an organoboron functionalized ultra-thin metal-organic nanosheet (MON), termed TCPB-Zr-NS, featuring an abundance of exposed Lewis acidic B and formate sites, which can effectively promote CO conversion upon the addition of Lewis basic o-phenylenediamines. Compared with the prototypical 3D analogue TCPB-Zr-3D, the resultant TCPB-Zr-NS showcases dramatically improved catalytic activity for the cyclization of o-phenylenediamine as a result of the highly exposed active sites and efficient substrates/products diffusion.
View Article and Find Full Text PDFStabilizing Lattice Oxygen of BiO by Interstitial Insertion of Indium for Efficient Formic Acid Electrosynthesis.
Angew Chem Int Ed Engl
January 2025
School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 610054, China.
Bismuth oxide (BiO) emerges as a potent catalyst for converting CO to formic acid (HCOOH), leveraging its abundant lattice oxygen and the high activity of its Bi-O bonds. Yet, its durability is usually impeded by the loss of lattice oxygen causing structure alteration and destabilized active bonds. Herein, we report an innovative approach via the interstitial incorporation of indium (In) into the BiO, significantly enhancing bond stability and preserving lattice oxygen.
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