Article
Materials Science, Coatings & Films
Yi-En Ke, Li-Chun Chang, Wu Kai, Yung- Chen
Summary: The study found that the Ta-Al multilayer films exhibited low oxygen content and high hardness at high temperatures, although the high Ta content in the films decreased their adhesion to the substrates. By preparing laminated films, the adhesion between the film and the substrate can be improved.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Julia S. Rau, Oliver Schmidt, Reinhard Schneider, Rafaela Debastiani, Christian Greiner
Summary: Tribological loading accelerates the surface oxidation of high-purity copper, and the influence of temperature on this tribo-oxidation is investigated. With increased temperature, the tribo-oxidation becomes more intense and leads to the formation of more pores and oxides.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
P. Bhuyan, M. Paliwal, V. Subramanya Sarma, B. de Boer, R. Mitra, S. Mandal
Summary: In this systematic study on a Ni-based superalloy, it was found that the evolution of precipitates during aging significantly affects the high-temperature hot corrosion performance. The improved corrosion resistance was attributed to the rapid formation of oxide layer and the presence of undissolved carbides at grain boundaries, which hindered the inward transport of corrosive species.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Olivier De Castro, Jean-Nicolas Audinot, Hung Quang Hoang, Cherif Coulbary, Olivier Bouton, Rachid Barrahma, Alexander Ost, Charlotte Stoffels, Chengge Jiao, Mikhail Dutka, Michal Geryk, Tom Wirtz
Summary: The article introduces the use of magnetic sector secondary ion mass spectrometry (SIMS) on a widely used instrument, focused ion beam (FIB)-scanning electron microscopy (SEM), for nanoscale investigations. It provides a detailed description of the instrument's layout and performance, as well as the research results obtained in various fields. The system demonstrates versatile capability for high-performance correlative studies in materials science and life sciences.
ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Andrea Pannwitz, David M. Klein, Santiago Rodriguez-Jimenez, Carla Casadevall, Hongwei Song, Erwin Reisner, Leif Hammarstrom, Sylvestre Bonnet
Summary: Artificial photosynthesis has made significant progress in producing solar fuel using liposomes as nanocompartments. However, mastering membrane-supported photochemistry requires a thorough understanding of the science behind lipids. Understanding key features like orientation, controlled electron transport, and proton gradients in photoactive liposomes could enhance efficiency in solar fuel synthesis.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Alter Zakhtser, Ahmed Naitabdi, Rabah Benbalagh, Francois Rochet, Caroline Salzemann, Christophe Petit, Suzanne Giorgio
Summary: The study investigates the shape, composition, and surface chemistry of Pt-Zn nanoparticles obtained by reduction in oleylamine, with the addition of phenyl ether or benzyl ether influencing the composition and shape. After washing with ethanol, the particles are coated with oleylamine and oxidation products, and upon exposure to air, they oxidize and form a discontinuous ZnO film. Pt-Zn particles are unstable and prone to losing Zn due to preferential oxidation of the less noble metal.
Article
Chemistry, Physical
Olaf Brummel, Leon Jacobse, Alexander Simanenko, Xin Deng, Simon Geile, Olof Gutowski, Vedran Vonk, Yaroslava Lykhach, Andreas Stierle, Jorg Libuda
Summary: New diagnostic approaches are needed in the field of electrocatalysis. A versatile experimental setup combining two complementary in-situ techniques has been developed for simultaneous chemical and structural analysis of planar electrodes. The setup has been tested with a model study and shows a high potential for application in energy conversion and storage.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Zhengxiong Su, Tan Shi, Huahai Shen, Li Jiang, Lu Wu, Miao Song, Zhiming Li, Sheng Wang, Chenyang Lu
Summary: This study directly revealed the chemical short-range order (CSRO) in a face-centered cubic equiatomic NiCoFeCrMn high-entropy alloy using advanced transmission electron microscopy. The researchers also demonstrated a new possibility of tailoring CSRO by radiation.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Kai Chen, Lefu Zhang, Zhao Shen, Xiaoqin Zeng
Summary: This study investigated the characteristics and formation mechanisms of the surface oxide scale of 310S stainless steel exposed to 650℃ supercritical water for 1000 hours.
Article
Materials Science, Multidisciplinary
Fei Xue, Emmanuelle A. Marquis
Summary: Surface deformation of Ni and Fe alloys contributes to improved oxidation resistance at low and intermediate temperatures. The beneficial effect is not solely due to fast diffusion mediated by high densities of dislocations and grain boundaries, but rather by diffusion-induced grain boundary migration (DIGM). DIGM enables faster Cr transport to the surface and selective Cr oxidation, resulting in improved oxidation resistance.
Article
Multidisciplinary Sciences
Chao Sun, Andreas Nold, Claudia M. Fusco, Vidhya Rangaraju, Tatjana Tchumatchenko, Mike Heilemann, Erin M. Schuman
Summary: Neurons localize mRNAs and ribosomes in dendrites and axons for local protein synthesis to supply synapses. Study shows that ribosomes and nascent proteins positively correlate with synapse density and the amount of locally synthesized protein relates to spontaneous Ca2+ activity at synapses. Local and global plasticity result in a multifold increase in synaptic nascent protein with substantial heterogeneity between neighboring synapses.
Article
Chemistry, Multidisciplinary
Joachim Dahl Thomsen, Kate Reidy, Thang Pham, Julian Klein, Anna Osherov, Rami Dana, Frances M. Ross
Summary: This study investigates nucleation control for metals deposited on two-dimensional materials in the absence of substrate effects and minimized heterogeneous nucleation sites. The results show that ultralow nucleation densities can be achieved on suspended graphene, with nucleation density on the adjacent supported substrate being 2-3 orders of magnitude higher.
Article
Engineering, Electrical & Electronic
C. Wen, B. Y. Cao, Z. Q. Shi, Y. J. Ma, J. X. Wang, W. B. Yang
Summary: Oxygen atoms play a dual role in the fabrication of microelectronic devices, oxidizing Si to produce the SiO2 layer and causing failures by oxidizing metal electrodes and entering the semiconductor as an impurity recombination center. Diffusion of oxygen in textured surfaces, while rarely studied, can be controlled to reduce oxide thickness and oxygen recombination centers concentration.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Bhaskar Bhaduri
Summary: In this study, copper nanoparticles grown carbon nanofibers (Cu-CNFs) were synthesized on graphite powder using catalytic chemical vapor deposition (CVD) method with acetylene as the carbon source. The CNFs were heat treated under inert atmosphere, and the analysis showed that the synthesis followed tip growth mechanism, with the material being of high purity confirmed by EDS and XPS analysis.
Article
Plant Sciences
Hanna B. Margonska, Malgorzata Kozieradzka-Kiszkurno, Emilia Brzezicka, Lukasz P. Halinski, Kevin L. Davies, Monika M. Lipinska
Summary: Crepidium is a large genus of mainly pantropical orchids with limited information on pollination and floral morphology. Field observations show that the flowers are visited by various insects and have two forms of small liquid droplets on the lip surface. Through GC-MS analysis and microscopy examination, it was found for the first time that these species exhibit liquid secretion.
Article
Materials Science, Ceramics
Yong-Ming Dai, Chi-Yuan Lu, Yu-Tsai Pan
CERAMICS INTERNATIONAL
(2016)
Article
Chemistry, Multidisciplinary
Shiuan-Shinn Lee, Chi-Yuan Lu, Min-Chang Wu
Article
Chemistry, Physical
Kui-Hao Chuang, Chi-Yuan Lu, Ming-Yen Wey, Ya-Ni Huang
APPLIED CATALYSIS A-GENERAL
(2011)
Article
Agricultural Engineering
Jung-Chun Chen, Kai-Sung Wang, Hsien Chen, Chi-Yuan Lu, Lung-Chiu Huang, Heng-Ching Li, Tzu-Huan Peng, Shih-Hsien Chang
BIORESOURCE TECHNOLOGY
(2010)
Article
Engineering, Environmental
Hui-Hsin Tseng, Chi-Yuan Lu, Feng-Yim Chang, Ming-Yen Wey, Han-Tsung Cheng
CHEMICAL ENGINEERING JOURNAL
(2011)
Article
Engineering, Chemical
Kui H. Chuang, Zhen S. Liu, Chi Y. Lu, Ming Y. Wey
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2009)
Article
Chemistry, Physical
Kui-Hao Chuang, Kaimin Shih, Chi-Yuan Lu, Ming-Yen Wey
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2013)
Article
Environmental Sciences
Chi-Yuan Lu, Hui-Hsin Tseng, Ming-Yen Wey, Kui-Hao Chuang, Jia-Hong Kuo
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2009)
Article
Engineering, Environmental
Kai-Sung Wang, Chi-Yuan Lu, Shih-Hsien Chang
JOURNAL OF HAZARDOUS MATERIALS
(2011)
Article
Materials Science, Multidisciplinary
Chi-Yuan Lu, Wen-Chi Chang, Ming-Yen Wey
MATERIALS CHEMISTRY AND PHYSICS
(2013)
Article
Materials Science, Multidisciplinary
Chi-Yuan Lu, Hui-Hsin Tseng, Ming-Yen Wey, Ling-Yi Liu, Kui-Hao Chuang
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2009)
Article
Materials Science, Multidisciplinary
Kui-Hao Chuang, Chi-Yuan Lu, Ming-Yen Wey
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2011)
Article
Engineering, Chemical
Chi-Yuan Lu, Jui-Yeh Rau, Jyh-Cherng Chen, Shih-Teng Huang, Ming-Yen Wey
Article
Chemistry, Physical
Kui-Hao Chuang, Zhen-Shu Liu, Yu-Hao Chang, Chi-Yuan Lu, Ming-Yen Wey
REACTION KINETICS MECHANISMS AND CATALYSIS
(2010)
Article
Chemistry, Multidisciplinary
Yong-Ming Dai, Chi-Yuan Lu, Chi-Jen Chang
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)