Article
Materials Science, Multidisciplinary
Si Li, Anxiang Guan, Chao Yang, Chen Peng, Ximeng Lv, Yali Ji, Yueli Quan, Qihao Wang, Lijuan Zhang, Gengfeng Zheng
Summary: The study introduces a dual metal atomic catalyst with Cu-Cu atoms demonstrating high efficiency and selectivity in CO electroreduction to C2+ products, while the Cu-Ni atoms mainly convert CO to CH4.
ACS MATERIALS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Gyuweon Jung, Seongbin Hong, Yujeong Jeong, Wonjun Shin, Jinwoo Park, Donghee Kim, Jong-Ho Lee
Summary: This study presents a low-power, sensitive, selective, reliable, and practical CO gas sensor. The sensor utilizes a floated WO film as a sensing material and modulates the electron concentration to enhance sensitivity and selectivity. The proposed sensor shows a higher response and lower fabrication cost.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Yonglong Li, Jiawei Ying, Tianyao He, Guobo Li, Hongxiang Zhang, Shan Huang, Ting Huang, Wenming Liu, Honggen Peng
Summary: A high-surface area dendritic mesoporous silica (KCC-1) was successfully synthesized and used as a support to confine Pt-Ni bimetallic nanoparticles (NPs). The study showed that the Pt-Ni NPs exhibited high dispersion with an ultra-small size of 1.0 nm. The large specific surface area and abundant mesoporous structure of dendritic KCC-1 effectively promoted the dispersion and thermal stability of Pt-Ni nanoparticles, leading to improved CO oxidation activity. Combining Pt and Ni in the catalyst with a suitable ratio further enhanced its activity due to the synergetic effect between the two metals. The optimal catalyst, 1% Pt7Ni3/KCC-1, achieved 100% CO conversion at 100 degrees C, demonstrating the potential for designing CO oxidation catalysts with low precious metal loading and superior catalytic activity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Fairous Salleh, Maratun Najiha Abu Tahari, Alinda Samsuri, Tengku Shafazila Tengku Saharuddin, Siti Sarahah Sulhadi, Mohd Ambar Yarmo
Summary: The physical and chemical behavior of bulk tungsten oxide and Ni doped tungsten oxide were analyzed using temperature-programmed reduction technique, with XRD, FESEM, and XPS analysis. Reduction studies showed different pathways for WO3 and Ni-doped WO3 under H2 and CO atmospheres, with Ni additive enhancing WO3 reducibility and promoting tungsten carbide formation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Preecha Kittikhunnatham, Gabrielle A. Leith, Abhijai Mathur, Jennifer K. Naglic, Corey R. Martin, Kyoung Chul Park, Katherine McCullough, H. D. A. Chathumal Jayaweera, Ryan E. Corkill, Jochen Lauterbach, Stavros G. Karakalos, Mark D. Smith, Sophya Garashchuk, Donna A. Chen, Natalia B. Shustova
Summary: This study investigated the efficient delivery of reactive and toxic gaseous reagents in organic reactions using metal-organic frameworks (MOFs). It was found that MOFs can serve as both gas cargo vehicles and catalysts, leading to high product yields. Moreover, the MOFs can be recycled without sacrificing product yield and crystallinity, indicating the potential of developing multifunctional MOF-based reagent-catalyst cargo vessels as an attractive alternative to toxic pure gases or gas generators.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Hui-Qing Geng, Xiao-Feng Wu
Summary: A copper-catalyzed alkoxycarbonylation transformation of unactivated alkyl iodides has been developed to produce tert-butyl esters in good yields. Other types of aliphatic esters can also be obtained in moderated yields with the addition of extra alcohols. Both primary and secondary alkyl alcohols can react successfully in this reaction.
Article
Polymer Science
Yu-Tong Li, Hui-Ying Yu, Wen-Bing Li, Ye Liu, Xiao-Bing Lu
Summary: This study introduced a novel biodegradable polymer, beta-CPL, synthesized through ring-expansive carbonylation reaction, which can achieve regioselective growth through acyl cleavage. The polymer features high melting temperature and molecular weight, and its monomers can be recycled through thermal decomposition.
Article
Chemistry, Physical
Peijun Li, Jason R. Zbieg, Jack A. Terrett
Summary: This study demonstrates a novel method for constructing carbon-oxygen bonds using a dual photoredox/iodine(III) platform directly from simple carboxylic acids and alcohols. By utilizing a radical-polar crossover event to generate a carbocation intermediate, this activation platform overcomes the electronically mismatched nature inherent in previous radical-based decarboxylative couplings, enabling a broad application across different types of carboxylic acid substrates.
Article
Chemistry, Physical
Siran Zhang, Kang An, Xitao Wang, Hong Wang, Shuangshuang Li, Huayu Sun, NingYan Li, Yi Wu, Yuan Liu
Summary: In this work, trimetallic Pt-Pd-Ru nanoparticles loaded on LaCoO3 perovskite were prepared and investigated for their catalytic performance in CO oxidation. Results showed that Pt, Ru and Pd ions were successfully incorporated into the lattice of LaCoO3, forming a perovskite structure. The trimetallic Pt-Pd-Ru/LaCoO3 catalyst exhibited the highest activity and best stability, attributed to the combination of oxygen vacancies on the surface of LaCoO3 and highly dispersed nanoparticles. The excellent stability was due to the special metal-support interaction, with Pt-Pd in the nanoparticles connected and adhered to the LaCoO3 support through the Ru species in the interface.
APPLIED SURFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Zhichang Wang, Michele Reticcioli, Zdenek Jakub, Igor Sokolovic, Matthias Meier, Lynn A. Boatner, Michael Schmid, Gareth S. Parkinson, Ulrike Diebold, Cesare Franchini, Martin Setvin
Summary: Polarizable materials, such as the incipient ferroelectric perovskite KTaO3, exhibit the ability to tune chemical reactivity. The adsorption states of molecules are influenced by the coupling between surface polarity and ferroelectric polarization.
Article
Chemistry, Physical
Enis Oguzhan Eren, Saim Ozkar
Summary: This review provides an overview of recent advances in developing highly efficient heterogeneous catalysts for the selective electroreduction of CO2 to CO, considering mechanistic investigations and basic catalytic requirements. It compares the efficiency of different combinations of transition metals with various supporting materials, and addresses the current challenges in designing future research in this field.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Linxiao Chen, Sarah I. Allec, Manh-Thuong Nguyen, Libor Kovarik, Adam S. Hoffman, Jiyun Hong, Debora Meira, Honghong Shi, Simon R. Bare, Vassiliki-Alexandra Glezakou, Roger Rousseau, Janos Szanyi
Summary: Research interest in single-atom catalysts (SACs) has been increasing, however, the lack of understanding of their dynamic behaviors during applications hinders catalyst development and mechanistic understanding. This study reports on the evolution of active sites over a Pd/TiO2-anatase SAC in the reverse water-gas shift (rWGS) reaction. The insights gained about SAC dynamics and the structure-function relationship are valuable for mechanistic understanding and catalyst design.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Kanokon Upitak, Christophe M. Thomas
Summary: Almost all aspects of daily life involve polymers in some form or the other. However, polymer production is largely based on finite feedstocks. The conversion of biomass into resources suitable for polymer production is a crucial challenge for a more sustainable chemical economy. Catalysis plays an important role in supporting more sustainable plastics production. One-pot catalysis represents an exciting frontier in materials science, enabling the synthesis of sustainable materials for a wide range of applications and reducing the environmental footprint.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Physical
Chao Xiong, Yaorong He, Dejing Xu, Xiaohui Liu, Can Xue, Xiantai Zhou, Hongbing Ji
Summary: Activation of inert propylene to produce propylene oxide (PO) is crucial, and a temperature-controlled phase transfer catalyst MoOO.DMF has been prepared for efficient epoxidation. The catalyst exhibits high selectivity and productivity for PO, and can be dissolved in solvent at higher temperatures and separated after reaction. The mechanisms have been proved by in-situ FT-IR, ESR and HRMS spectrum, showing the selective oxygen transfer from tertbutyl peroxide radical and Mo-O-O bridge in MoOO.DMF.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Daniel J. Martin, James M. Mayer
Summary: The study demonstrates that a metalloporphyrin catalyst with four cationic groups can stabilize charged intermediates and catalyze ORR and CO2RR reactions with fast rates and low overpotentials. Each of the four atropisomers of the metalloporphyrin show differences in maximum turnover frequencies and overpotentials for the two reactions, highlighting the complexity of charge positioning in affecting the thermodynamics and kinetics of multistep molecular electrochemical transformations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Michael A. Hewitt, Heriberto Hernandez, Grant E. Johnson
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Instruments & Instrumentation
Edoardo Apra, Ashish Bhattarai, Eric Baxter, ShanYi Wang, Grant E. Johnson, Niranjan Govind, Patrick Z. El-Khoury
APPLIED SPECTROSCOPY
(2020)
Article
Chemistry, Physical
Jun Zhang, Eric T. Baxter, Manh-Thuong Nguyen, Venkateshkumar Prabhakaran, Roger Rousseau, Grant E. Johnson, Vassiliki-Alexandra Glezakou
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Multidisciplinary Sciences
Jonas Warneke, Martin Mayer, Markus Rohdenburg, Xin Ma, Judy K. Y. Liu, Max Grellmann, Sreekanta Debnath, Vladimir A. Azov, Edoardo Apra, Robert P. Young, Carsten Jenne, Grant E. Johnson, Hilkka Kenttamaa, Knut R. Asmis, Julia Laskin
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Chemistry, Multidisciplinary
Joseph Edgecomb, Xiaohong Xie, Yuyan Shao, Patrick Z. El-Khoury, Grant E. Johnson, Venkateshkumar Prabhakaran
FRONTIERS IN CHEMISTRY
(2020)
Article
Chemistry, Physical
Marshall R. Ligare, Kelsey A. Morrison, Michael A. Hewitt, J. Ulises Reveles, Niranjan Govind, Heriberto Hernandez, Erin S. Baker, Brian H. Clowers, Julia Laskin, Grant E. Johnson
Summary: By employing ion mobility spectrometry and density functional theory, the structure of Au-7(PPh3)(7)H-5(2+) was determined, with hydrogen-containing species identified as potential intermediates in the formation of larger phosphine ligated gold clusters.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Garvit Agarwal, Jason D. Howard, Venkateshkumar Prabhakaran, Grant E. Johnson, Vijayakumar Murugesan, Karl T. Mueller, Larry A. Curtiss, Rajeev S. Assary
Summary: The spontaneous chemical reactivity at multivalent electrode surfaces plays a crucial role in solid electrolyte interphase (SEI) formation and affects battery longevity. By using ab initio molecular dynamics simulations and Bader charge analysis, the study investigated the reactivity of 0.5 M Mg(TFSI)(2) in 1,2-dimethoxyethane (DME) solvent at a Mg(0001) surface. The results suggest that the initial degradation reactions of the electrolyte heavily depend on the structure of Mg(TFSI)(2) species near the anode surface.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Kie Hankins, Venkateshkumar Prabhakaran, Sungun Wi, Vaithiyalingam Shutthanandan, Grant E. Johnson, Swadipta Roy, Hui Wang, Yuyan Shao, Suntharampillai Thevuthasan, Perla B. Balbuena, Karl T. Mueller, Vijayakumar Murugesan
Summary: This study isolated lithium polysulfide anions from an electrolyte solution using ISL and deposited them on Li-metal electrodes, providing unprecedented insight into the parasitic reactions of well-defined polysulfides on Li-metal electrodes. The precision in constructing model interfaces with ISL, coupled with in situ X-ray photoelectron spectroscopy and ab initio theoretical calculations, revealed the mechanism of multielectron sulfur oxidation processes on Li-metal electrodes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Shuai Tan, Difan Zhang, Manh-Thuong Nguyen, Vaithiyalingam Shutthanandan, Tamas Varga, Roger Rousseau, Grant E. Johnson, Vassiliki-Alexandra Glezakou, Venkateshkumar Prabhakaran
Summary: The functionalization of GO membranes with ILs provides a promising approach for efficient ion separation and critical material recovery. The ILs in the membranes act as spacers, reducing cation mobility and promoting ion desolvation, resulting in an increased water flux. The high separation efficiency of the IL/GO membranes is attributed to the synergistic modification of hydrophobicity and surface charge.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Eric T. Baxter, Jun Zhang, Shuai Tan, Manh-Thuong Nguyen, Difan Zhang, Qinqin Yuan, Wenjin Cao, Xue-Bin Wang, Venkateshkumar Prabhakaran, Vassiliki-Alexandra Glezakou, Grant E. Johnson
Summary: This study investigates the effects of ionic liquid clusters on ion adsorption and separation, and demonstrates that different sized and stoichiometric ionic liquid clusters can be used to improve the efficiency of electrochemical separations.
CHEMISTRY OF MATERIALS
(2022)
Article
Biochemical Research Methods
Mallory Philliber, Eric T. Baxter, Grant E. Johnson
Summary: Phosphine ligated gold clusters can be synthesized and characterized to understand their size, stability, and formation in solution. Two different diphosphines can result in a broad distribution of mixed-ligand clusters. High-mass resolution electrospray ionization mass spectrometry reveals novel cluster compositions and size-dependent trends in ligand exchange. Energy-resolved collision-induced dissociation experiments show that mixed-ligand clusters are generally more stable than single ligand clusters.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2022)
Article
Chemistry, Multidisciplinary
Oliva M. M. Primera-Pedrozo, Shuai Tan, Difan Zhang, Brian T. T. O'Callahan, Wenjin Cao, Eric T. T. Baxter, Xue-Bin Wang, Patrick Z. Z. El-Khoury, Venkateshkumar Prabhakaran, Vassiliki-Alexandra Glezakou, Grant E. E. Johnson
Summary: This study synthesized Keggin POMs with both tungsten and vanadium atoms and used ion soft landing to deliver these POMs to different self-assembled monolayer surfaces on gold. The interactions between POMs and supports, as well as POMs and neighboring POMs, were characterized using various spectroscopic techniques. The results showed that surface functional groups and nanoscale heterogeneity can modulate the observed spectroscopic signatures, and POM-POM interactions also affect the spectral shifts.
Article
Chemistry, Multidisciplinary
Venkateshkumar Prabhakaran, Joelle Romo, Ashish Bhattarai, Kyle George, Zachary M. Norberg, David Kalb, Edoardo Apra, Peter A. Kottke, Andrei G. Fedorov, Patrick Z. El-Khoury, Grant E. Johnson, Julia Laskin
Summary: The exceptional properties of polyoxometalate anions, PW12O403-, including photochromism and redox reactions, have been utilized to develop an integrated photoelectrochemical energy storage cell. By removing strongly coordinating cations, the device's maximum power output has increased by approximately 370%. Furthermore, the photocathode undergoes a noticeable color change upon irradiation, suggesting potential applications in advanced smart windows and photochromic lenses.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Manh-Thuong Nguyen, Jun Zhang, Venkateshkumar Prabhakaran, Shuai Tan, Eric T. Baxter, Vaithiyalingam Shutthanandan, Grant E. Johnson, Roger Rousseau, Vassiliki-Alexandra Glezakou
Summary: Our study demonstrates that functional groups like COOH have a significant impact on the adsorption properties of water and ions at liquid/graphene interfaces. It was found that COOH offers the best Pb(II) adsorption capacity among the studied functional groups, with Pb(II) adsorption increasing substantially with higher pH levels.
Article
Biochemical Research Methods
Michael A. Hewitt, Heriberto Hernandez, Grant E. Johnson
Summary: In this study, a polydisperse solution of cationic Triphenylphosphine (PPh3)-ligated gold nanoclusters was analyzed using high-resolution electrospray ionization mass spectrometry, revealing new species and showing that the Au12-14 size range is a critical transition point in cluster nucleation. The results support the idea that ligands play a key role in directing gold cluster size and abundance during synthesis.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2021)
