Article
Chemistry, Physical
Guoyu Shi, Tetsuro Tano, Donald A. Tryk, Akihiro Iiyama, Makoto Uchida, Katsuyoshi Kakinuma
Summary: The study demonstrates that the activity of Pt/Nb-SnO2 catalyst increases with temperature and Pt loading, as the high Pt loading leads to the formation of a surface structure favorable for ORR. This enhancement is attributed to an increase in the pre-exponential factor of the Arrhenius equation, possibly linked to the increased exposure of (111)-like facets.
Article
Energy & Fuels
Miriam Gonzalez-Castano, Svetlana Ivanova, Miguel Angel Centeno, Theophiles Ioanides, Harvey Arellano-Garcia, Jose Antonio Odriozola
Summary: This study evaluates the functional modifications induced by Zr and Fe as dopants in Pt/CeO2-MOx/Al2O3 catalysts to improve water gas shift performance. Iron and zirconia dopants significantly influence the activity and reaction mechanisms of Pt/ceria catalysts, with a synergistic effect observed when both metals are combined, leading to higher CO conversion rates and catalytic activity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Xianxian Xie, Valentin Briega-Martos, Riccardo Farris, Milan Dopita, Mykhailo Vorokhta, Tomas Skala, Iva Matolinova, Konstantin M. Neyman, Serhiy Cherevko, Ivan Khalakhan
Summary: In this study, Pt-Au alloy catalysts with different compositions were prepared, and their activity and stability were comprehensively studied using various characterization techniques and simulation methods. The results showed that Pt-Au alloy with 10% gold exhibited the most promising activity and stability, effectively suppressing platinum dissolution at high potentials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Zhenpeng Huang, Shiying Cao, Jihang Yu, Xuan Tang, Yanglong Guo, Yun Guo, Li Wang, Sheng Dai, Wangcheng Zhan
Summary: This study demonstrates that phosphorus modification can enhance the catalytic performance of Pt/CeO2 catalyst in the total oxidation of light alkane by modulating its acidity and redox property. Phosphorus modification increases the acidity and the ability of the catalyst to activate C-H bond, while partially restoring its redox property.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Andre L. A. Marinho, Raimundo C. Rabelo-Neto, Florence Epron, Nicolas Bion, Fabio B. Noronha, Fabio Souza Toniolo
Summary: The Pt@CeO2 and Pt@CeZrO2 catalysts were found to have a significant impact on the carbon removal mechanism in dry reforming of methane, due to their higher presence of reactive oxygen species, making them more resistant to coke formation.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
Yutao Hu, Xiaolong Liu, Yang Zou, Haijiao Xie, Tingyu Zhu
Summary: Pt nanoparticle catalysts supported on a series of TiO2-SiO2 composites were prepared and their CO oxidation activities were evaluated under dry and humid conditions. The catalyst Pt/1Ti-3Si showed the best performance under both conditions and has potential for future industrial applications. The promotion effect of H2O was studied and found to be correlated with H2O concentration and Ti-Si ratio. Defects on the supports inhibited phase transformation and lattice growth for TiO2. The formation of metallic Pt0 particles was beneficial for CO oxidation. The H2O promotion effect could be controlled by regulating the nature of the support. The proposed mechanism of H2O promotion confirmed the carboxyl intermediate pathway.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Huichen Xie, Zheng Li, Jian Zhu, Hao Li, Qing Yang, Yang Yang, Can Li
Summary: The deposition of Pt co-catalysts solely on Au nanoparticles has been found to enhance the activity of plasmonic photocatalytic reactions and improve charge separation efficiency.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Huichen Xie, Zheng Li, Jian Zhu, Hao Li, Qing Yang, Yang Yang, Can Li
Summary: Chemical processes induced by surface plasmon resonance have attracted attention in the field of photocatalysis. This study reports the selective deposition of Pt co-catalysts on Au nanoparticles, resulting in improved activity of plasmonic photocatalysts. The results reveal that Pt solely on Au NPs provides higher photocatalytic activity due to enhanced charge separation efficiency.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Maowen Liu, Joerg Weissmueller
Summary: This study investigates the microstructure and phase decomposition in nanoporous Au-Pt materials fabricated by dealloying. The findings reveal that the enrichment of Pt at the surface and Pt depletion in the bulk during dealloying result in a homogeneous single-phase state in the material. Annealing induces diffusion-driven coarsening and the formation of Pt-rich regions with crystallographic coherence and semi-coherent regions. The study demonstrates the high kinetic stability and tunability of surface composition in nanoporous alloys through annealing.
Article
Chemistry, Physical
Zahra Rajabi, Michela Martinelli, Caleb D. Watson, Donald C. Cronauer, A. Jeremy Kropf, Gary Jacobs
Summary: In the investigation of low temperature water-gas shift (LTS) reaction, it was found that increasing the loading of lithium dopant can enhance the reaction rate, but high levels of lithium loading can suppress the hydrogen transfer capacity required by platinum site and increase the catalyst basicity. Electron transfer is unlikely the main cause of C-H bond weakening in formate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
J. C. Ortiz-Herrera, H. Cruz-Martinez, O. Solorza-Feria, D. Medina
Summary: Support materials play a significant role in the performance of catalysts for the oxygen reduction reaction. Carbon nanotubes (CNTs) have emerged as a promising alternative due to their excellent properties. Catalysts supported on CNTs exhibit better oxidation resistance, higher catalytic performance, and greater durability compared to those supported on carbon black.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Qijun Fu, Sheng Wang, Ting Wang, Defeng Xing, Xu Yue, Mingzhe Wang, Shudong Wang
Summary: By comparing the performance and reaction mechanisms of Pt/CZ11 and Pt/Al2O3 catalysts, it was found that Pt/CZ11 exhibited higher activity and combustion efficiency, which could be attributed to the strong interaction between Pt and Ce-Zr solid solution and the enrichment of surface active oxygen and oxygen vacancy.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Applied
Zhiyu Zhou, Michael P. Harold, Dan Luss
Summary: Simultaneous conversion of NO, CO and C3H6 was carried out on washcoated monoliths containing oxygen storage material-promoted mixed Platinum group metals to evaluate the promotion effects and identify the best architecture. PGM supported directly on the OSM was found to be the best design for one type of OSM, while a dual-layer architecture outperformed the MFO-supported PGM catalyst. Enhancement in conversion efficiency was achieved with the dual-layer PGM-MFO catalyst due to a direct catalytic contribution from the spinel. The study provides insights into the benefits of OSM and guidance for optimizing multi-component PGM + OSM catalyst composition and architecture.
Article
Chemistry, Physical
Bangfen Wang, Xiufeng Li, Yuhai Sun, Hailin Xiao, Mingli Fu, Shuhua Li, Hong Liang, Zhiwei Qiao, Daiqi Ye
Summary: Pt/CeO2 catalysts were modified with non-thermal plasma to enhance the catalytic activity for toluene oxidation. The plasma treatment affected the Pt particle size, CeO2-rod length, oxygen vacancy concentration, and Pt/CeO2 reducibility. The impact of plasma on Pt atoms was more significant than on oxygen vacancies.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Peng Zhai, Zhenhua Xie, Erwei Huang, Divakar R. Aireddy, Haoran Yu, David A. Cullen, Ping Liu, Jingguang G. Chen, Kunlun Ding
Summary: Research has found that Pt-M (M = Sn/In/Zn) bimetallic catalysts on non-redox-active silica support can break the equilibrium limit of direct propane dehydrogenation using CO2 as a co-reactant.
Article
Chemistry, Physical
Dinesh Bhalothia, Po-Chun Chen, Che Yan, Kuan-Wen Wang, Tsan-Yao Chen
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Nanoscience & Nanotechnology
Bing-Jian Su, Kuan-Wen Wang, Chung-Jen Tseng, Chih-Wen Pao, Jeng-Lung Chen, Kueih-Tzu Lu, Jin-Ming Chen
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Tzu-Hsi Huang, Shuan Lin, Sheng-Wei Lee, Cheng-An Lin, Sheng Dai, Yanyan Jia, Kuan-Wen Wang
Summary: Core/shell segregated nanocatalysts exhibit improved activity and stability compared with alloyed nanocatalysts due to high noble metal utilization and electronic modification effect. This research highlights the importance of controlling the fine structure of catalysts to effectively promote the activity and durability of electrocatalysts for fuel cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sheng Dai, Tzu-Hsi Huang, Wei- Liu, Chia-Wei Hsu, Sheng-Wei Lee, Tsan-Yao Chen, Ya-Chen Wang, Jeng-Han Wang, Kuan-Wen Wang
Summary: The electrochemical CO2 reduction reaction serves as a viable alternative to convert intermittent electricity from renewable sources to value-added chemicals. The development of economic catalysts with high efficiency is critical in accelerating CO2 utilization technology. The Au-Cu alloyed core-shell catalyst shows superior performance in CO2-to-CO electrochemical conversion.
Article
Chemistry, Multidisciplinary
Yanyan Jia, Tzu-Hsi Huang, Shuan Lin, Lisheng Guo, Yu-Min Yu, Jeng-Han Wang, Kuan-Wen Wang, Sheng Dai
Summary: In this study, a stable Pd-Cu hydride catalyst was designed and synthesized, which combines the advantages of Pd-M and PdHx structures to improve the stability and durability of the hydrogen evolution reaction.
Article
Chemistry, Physical
Dinesh Bhalothia, Wei-Hao Hsiung, Shou-Shiun Yang, Che Yan, Pei-Chi Chen, Ting-Han Lin, Shun-Chi Wu, Po-Chun Chen, Kuan-Wen Wang, Ming-Wei Lin, Tsan-Yao Chen
Summary: The study focuses on optimizing the CO2RR performance using trimetallic NC and laser annealing, showing a significant improvement in CO selectivity and yield under the optimal condition.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Hsiao-Yun Liu, Shih-Fang Lin, Da-Wei Lee, Justin Chou, Sheng-Wei Lee, Kuan-Wen Wang
Summary: This study focuses on the design and preparation of binary In-Sn catalysts for the electrochemical CO2 reduction reaction (CO2RR). The results show that In3Sn/C nanoparticles exhibit outstanding performance with high formate conversion. This research provides guidance for the optimization of catalyst compositions and structures for CO2RR.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Dinesh Bhalothia, Shou-Shiun Yang, Che Yan, Amisha Beniwal, You-Xun Chang, Shun-Chi Wu, Po-Chun Chen, Kuan-Wen Wang, Tsan-Yao Chen
Summary: A novel nanocatalyst (CoPd-CoOOV) has been developed for the catalytic transformation of CO2 into CO, showing high selectivity and activity at relatively low temperatures.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Nanoscience & Nanotechnology
Tzu-Hsi Huang, Yongjun Jiang, Yu-Hsin Peng, Yao-Tien Tseng, Che Yan, Po-Cheng Chien, Kung-Yu Wang, Tsan-Yao Chen, Jeng-Han Wang, Kuan-Wen Wang, Sheng Dai
Summary: Selective exposure of active surfaces improves Pt utilization and ORR activity, but stabilizing those surfaces remains a challenge. This study demonstrates that the (100) surface configuration of Pt3Co nano-dendrite structures enables active and stable ORR performance. Elaborate characterization reveals preferential segregation and oxidation of Co atoms on the Pt3Co(100) surface, preventing oxygen chemisorption. The Pt3Co catalyst exhibits high mass activity and stability, outperforming Pt/C and Pt3Co nanoparticles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yanyan Jia, Hua-Shan Hsu, Wan-Chun Huang, Da-Wei Lee, Sheng-Wei Lee, Tsan-Yao Chen, Lihui Zhou, Jeng-Han Wang, Kuan-Wen Wang, Sheng Dai
Summary: By decorating a small amount of In2O3 on the Cu surface, a composite Cu-In2O3 catalyst is developed, which greatly enhances the selectivity and stability for CO2-to-CO reduction. In situ X-ray absorption spectroscopy confirms the redox reaction of In2O3 and the preservation of Cu's metallic state during CO2RR. The strong electronic interaction and coupling at the Cu/In2O3 interface serve as the active site for selective CO2RR.
Article
Chemistry, Physical
Zhinan Fu, Lizhen Wang, Weijun Zhang, Xuan Tang, Wenxin Xia, Jinxia Li, Kuanwen Wang, Lihui Zhou, Xuhong Guo, Sheng Dai
Summary: ZIF-8-derived single atom catalysts with different hollow carbon nanoarchitectures are synthesized using a polyelectrolyte brush-templated-growth approach. Fe, Co, Cu, and Pd single-atom catalysts are successfully synthesized, with Fe catalysts showing superior oxygen reduction reaction performance. The study explores the morphology and structure of the derived materials, revealing the exposure of high-quality single-atom active sites and the promotion of mass transfer in the electrochemical process.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Yongjun Jiang, Ting-Wei Huang, Hsuan-Lien Chou, Lihui Zhou, Sheng-Wei Lee, Kuan-Wen Wang, Sheng Dai
Summary: Ru/C catalysts with different carbon host materials were investigated for hydrogen evolution reaction (HER). It was found that Ru/ZC catalyst showed a stronger metal-support interaction, leading to enhanced HER activity and stability. An acid etching treatment strategy was proposed to magnify the interfacial effect of Ru/C catalysts, resulting in a smaller Ru size and more exposed Ru-C interface, and significantly improved HER performance compared to Ru-based and Pt-based materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Dinesh Bhalothia, Yu-Min Yu, Yi-Ru Lin, Tzu-Hsi Huang, Che Yan, Jyh-Fu Lee, Kuan-Wen Wang, Tsan-Yao Chen
Summary: A novel PtRhNi tri-metallic nanocatalyst was developed with outstanding HER performance in both acidic and alkaline media, surpassing pure Pt catalyst in mass activity. The material exhibited good stability in chronoamperometric tests and the enhanced performance was attributed to the synergistic effect between neighbouring reaction sites in the sub-nanometer domains of PtRh nanoalloy.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Chemistry, Physical
Haolin Li, Kuan-Wen Wang, Alice Hu, Jyh-Pin Chou, Tsan-Yao Chen
Summary: This study investigates the effect of Pt ensemble size regulation on the ORR efficiency of Co-core-Pd-shell nanocatalysts, achieving excellent performance by reducing the Pt cluster size and optimizing adsorption energies. The results show that tuning the cluster size can efficiently utilize Pt atoms and guide the experimental synthesis of heterogeneous catalysts towards high efficiency and low Pt usage for a green economy.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Tzu-Hsi Huang, Dinesh Bhalothia, Sheng Dai, Che Yan, Kuan-Wen Wang, Tsan-Yao Chen
Summary: This study presents a one-dimensional bifunctional heterogeneous nanocatalyst Pt-SnOx NRs prepared via formic acid reduction method, showing outstanding performance in oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) with remarkable stability. The Pt-SnOx NRs exhibit higher activity and lower overpotential compared to commercial J.M.-Pt/C catalyst, attributed to the synergistic collaboration between SnO2 modifier and Pt atoms.
SUSTAINABLE ENERGY & FUELS
(2021)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
