Article
Chemistry, Multidisciplinary
Haley L. Young, Enrique D. Gomez, Raymond E. Schaak
Summary: Partial cation exchange reactions can be used to synthesize heterostructured nanoparticles, and upon heating, the ZnS regions and Cu1.8S/ZnS interfaces of these nanoparticles migrate and restructure. The migration of ZnS domains is dependent on their sizes and locations, and the superionic transition temperature of Cu1.8S correlates with the threshold temperature for ZnS migration. Additionally, the migration of ZnS domains occurs through a ripening process to minimize high-energy interfaces and through the restructuring of high-energy Cu1.8S/ZnS interfaces.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Ang Li, Yu Tao, Hui Lu, Shihang Qiao, Shanshan Liu, Yilin Jiao, Lilin Xie, Yanhui Chen
Summary: This article investigates the elemental diffusion process on a Cu-Sn nano-scale interface, records and analyzes the dynamic diffusion process, studies the factors influencing diffusion behavior, provides new insights into the conventional metallographic interface diffusion, and offers clues for solder design.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
P. Dzienny, R. Szczesny, T. Rerek, M. Trzcinski, L. Skowronski, A. Antonczak
Summary: This paper analyzes the process of formation of Au-Sn alloy nanoparticles (ANPs) through laser-induced dewetting of thin intermetallic layers for the first time. The optimal conditions for the formation of ANPs were determined and the morphology, distribution, and chemical composition of the samples were extensively studied.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Chen Zhou, Hio Tong Ngan, Jin Soo Lim, Zubin Darbari, Adrian Lewandowski, Dario J. Stacchiola, Boris Kozinsky, Philippe Sautet, Jorge Anibal Boscoboinik
Summary: Dynamic restructuring of bimetallic catalysts is crucial for their catalytic activity and selectivity. The authors use CO as a probe and agent to induce surface restructuring in Pd/Au(111) catalysts, uncovering the kinetics and timescale of in situ restructuring. This minute-timescale dynamics provides insights into the fluxional nature of alloy catalysts and the opportunity for surface fine-tuning under moderate conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Samuel S. Veroneau, Agnes E. Thorarinsdottir, Daniel M. Loh, Alaina C. Hartnett, Thomas P. Keane, Daniel G. Nocera
Summary: Crystalline metal oxide catalysts restructuring under OER conditions results in active sites with hydroxo/oxo species in an amorphous environment. Increasing the population of terminal hydroxo/oxo species improves catalyst competency. Managing the amorphous-crystalline dichotomy is essential for designing active OER catalysts.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shi-Ying Lv, Qing-Yu Liu, Yan-Xia Zhao, Sheng-Gui He
Summary: This study identified the direct photooxidation of isoprene by titanium oxide cluster anions in nanosize dimension using both ultraviolet and visible light excitations. The research revealed the potential role of dry titania in atmospheric isoprene oxidation and provided a clear picture of the photooxidation mechanism on titanium oxide nanoparticles. Insights were gained into both atmospheric chemistry of isoprene and the photochemistry of TiO2 nanoparticles.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Tawney A. Knecht, Shannon W. Boettcher, James E. Hutchison
Summary: This study investigates the structural evolution of nanoscale tin-doped indium oxide nanocrystals under CO2 reduction conditions. The research reveals that thicker nanocrystal films remain stable due to increased physical contacts, leading to morphological evolution into a larger metal alloy network. The findings highlight the importance of post-electrochemical structural characterization of electrocatalysts.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jinkyu Lim, Angel T. Garcia-Esparza, Jae Won Lee, Gihun Kang, Sangyong Shin, Sun Seo Jeon, Hyunjoo Lee
Summary: The selectivity of CO2 reduction to formic acid can be enhanced by synthesizing Sn-Cu@Sn dendrites with a core@shell architecture, showing great potential for large-scale applications.
Article
Materials Science, Ceramics
Charles T. McLaren, Craig R. Kopatz, Albert J. Fahey, Nicholas J. Smith, Himanshu Jain
Summary: Thermal poling is a method widely used for modifying glass surfaces through the application of DC voltage. The mechanism behind structural changes during poling, particularly the role of Joule heating, remains controversial. In-depth analysis revealed complex changes in structure and composition due to high electric fields across resistive depletion layers, refuting Joule heating as a significant factor.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Xiaolan Kang, Vilde Mari Reinertsen, Kevin Gregor Both, Augustinas Galeckas, Thomas Aarholt, Oystein Prytz, Truls Norby, Dragos Neagu, Athanasios Chatzitakis
Summary: There is a growing demand to control and enhance the stability and efficacy of nanoparticles (NPs) for photo- and electrochemical energy conversion applications. The galvanic replacement/deposition method offers a simpler and safer approach to produce a wide range of hybrid nanostructures with increased tailorability. These bimetallic nanostructures, supported on SrTiO3, show exceptional activity in plasmon-assisted photoelectrochemical water oxidation reactions.
Article
Chemistry, Physical
Rahul Gera, Carolyn J. Moll, Aditi Bhattacherjee, Huib J. Bakker
Summary: Using HD-VSFG, we investigated the molecular-scale structure of the Reline surface. As the water content increased, we observed a gradual depletion of urea from the surface, enhanced alignment of choline cations, and surface speciation of ChCl.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zisheng Zhang, Ziyang Wei, Philippe Sautet, Anastassia N. Alexandrova
Summary: Atomistic insight into the restructuring of the electrochemical interface under different potentials and adsorbate coverages is gained from first principles. The study reveals the formation of a shifted-row reconstruction on Cu(100) under electroreduction conditions induced by hydrogen adsorption. The findings provide valuable understanding for the design of Cu-based materials in electrocatalysis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Jie Hao, Yanfeng Zhang, Lei Zhang, Jinni Shen, Lingpeng Meng, Xuxu Wang
Summary: Isomorphically Sn (IV) doped BiOBr is achieved through a facile chemical method, enhancing the photocatalytic CO2 reduction into CO. The 4Sn-BiOBr sample shows the best activity with a 7.8 times higher CO yield compared to pristine BiOBr, due to the introduction of Sn ions and oxygen vacancies into the crystal lattice of BiOBr. This work provides insights into the tunability of catalytic active sites at the atom-scale and the mechanism of photocatalytic CO2 reduction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
M. R. Bindhu, T. David Willington, Mohammad Rafe Hatshan, Shen-Ming Chen, Tse-Wei Chen
Summary: Fluorine and tin simultaneously doped TiO2 nanoparticles were synthesized and characterized in this study. The co-doped TiO2 showed smaller crystallite size and increased band gap compared with pure TiO2. The morphologies of TiO2 particles changed significantly with doping. Photocatalytic activity experiments demonstrated that tin and fluorine doped TiO2 exhibited good photocatalytic activity.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Ye Wang, Genkuan Ren, Bing Jiang, Lin Yang, Zhiye Zhang, Xinlong Wang, Yanjun Zhong, Zhiyuan Chen, Xiushan Yang, Kazuki Morita, Wenhui Ma
Summary: Nanometer-sized hematite was synthesized via a two-step process, involving the oxidation of FeSO4·7H2O to Fe2(SO4)3 by oxygen in an acidic solution and the reduction of Fe2(SO4)3 to nanoscale hematite using sulfur vapor at 550°C. The resultant hematite exhibited good thermal stability up to 500°C and colloid stability in water-based paint, meeting the requirements of the international standard ISO 1248-A-I-1-a for an iron oxide red pigment.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2023)