Article
Engineering, Electrical & Electronic
Zilin Wang, Yunfan Shi, Zheyao Wang
Summary: This paper introduces a new method for Cu-Cu bonding without CMP and annealing, using a sacrificial Sn layer. The method involves three steps: reflowing a Cu-Sn bump at 250°C with redox gases to change the Sn layer from solid to porous, performing pre-bonding at 200°C to transform the porous Sn to porous Cu-Sn intermetallic compounds (IMCs), and performing final bonding at 250°C with formic acid gas sweeping to convert Cu-Sn bonding to Cu-Cu bonding. This method has successfully achieved high bonding strength and high yield in bonding Cu bumps with a diameter of 5 μm and a pitch of 25 μm.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Chemistry, Physical
Carlos E. Garcia-Vargas, Gregory Collinge, Dongmin Yun, Mal-Soon Lee, Valery Muravev, Ya-Qiong Su, Xavier Isidro Pereira-Hernandez, Dong Jiang, Vassiliki-Alexandra Glezakou, Emiel J. M. Hensen, Roger Rousseau, Abhaya K. Datye, Yong Wang
Summary: The study demonstrates that single atom copper catalysts prepared by high-temperature synthesis on ceria can maintain both activity and stability under variable reaction conditions by allowing charge transfer between active site and support, with the ability to dynamically respond to changes in catalyst environment.
Article
Chemistry, Multidisciplinary
Yichun Wang, Dongliang Chao, Zhenzhu Wang, Jiangfeng Ni, Liang Li
Summary: In this study, a high-energy aqueous copper ion system based on CuS nanosheet arrays was developed, showing high capacity, robust rate capability, and ultra-stable cycling. The charge-storage mechanism involving the reversible transition from CuS to Cu2S was systematically investigated. Additionally, a hybrid ion battery consisting of CuS positive electrode and Zn negative electrode was demonstrated, providing high energy and power performance.
Article
Chemistry, Applied
Pedro H. Finger, Taynara A. Osmari, Natalia M. Cabral, Jose Maria C. Bueno, Jean Marcel R. Gallo
Summary: A one-pot method for synthesizing copper supported in mesoporous silica was developed, with parameters such as pH, time, and temperature of aging affecting copper loading. The copper loading influenced the textural properties of the silica support and copper nanoparticles, with higher copper loading leading to more reduced copper nanoparticles with a higher copper-copper coordination number. The bond length of copper-copper correlated linearly with the activity per site of copper.
Article
Biochemistry & Molecular Biology
M. Agueda Placenti, Ernesto A. Roman, F. Luis Gonzalez Flecha, Rodolfo M. Gonzalez-Lebrero
Summary: Cu+-ATPases are integral membrane proteins belonging to the IB subfamily of P-type ATPases that couple Cu+ transport to ATP hydrolysis. Functional characterization of Legionella pneumophila Cu+-ATPase (LpCopA) revealed temperature and pH effects on enzyme activity, with phospholipids enhancing activity and Mg2+ acting as an essential activator. The enzyme's activity dependence on [Cu+] and [ATP] was described by hyperbolic functions, leading to a proposed reaction scheme sharing basic steps with the Albers-Post model for P-type ATPases.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES
(2022)
Article
Engineering, Environmental
Wenxin Liu, Zhaofan Tao, Duo Wang, Qianqian Liu, Yinan Zhang, Yanling Zhang, Alideertu Dong
Summary: This research proposes a graphene oxide-based strategy for the effective removal of Cu2+ ions from water and reusing them as antibacterial agents. The strategy involved using GO nanosheets to extract Cu2+ ions from water and convert them into copper nanoparticles, which demonstrated efficient antibacterial ability against Escherichia coli.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Yaozhen Huang, Feng Li, Xuan Zhang, Rong Cai, Jing Chen, Jing Li, Xin Du, Zheng Wang
Summary: The electronic structure of the electrocatalyst strongly influences its performance. In this study, cuprous oxide (Cu2O) with different morphologies and copper oxide (CuO) with different surface oxidation degrees were synthesized to investigate their relationship with oxygen evolution reaction (OER) activity. It was found that Cu2O cubes with high electronic density facets exhibited enhanced OER performance, and CuO cubes with Cu vacancies showed high catalytic performance and improved charge transport.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zhonghui Cui, Song Song, Huibin Liu, Yingtian Zhang, Fei Gao, Tong Ding, Ye Tian, Xiaobin Fan, Xingang Li
Summary: By constructing dual-site copper catalysts with Cu+ single atoms and Cu nanoparticles, this study successfully enhances the water-gas shift reaction, increasing CO adsorption and catalytic activity, especially performing better at low temperatures.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Environmental Sciences
Wasim Ullah Khan, Iris K. M. Yu, Yuqing Sun, Matthew I. J. Polson, Vladimir Golovko, Frank L. Y. Lam, Isao Ogino, Daniel C. W. Tsang, Alex C. K. Yip
Summary: This study demonstrates the role of copper nanoclusters supported on TiO2 in CO oxidation, showing both high activity and stability. Catalysts with low copper loading did not deactivate after 8 hours of operation, indicating their potential as a promising alternative to noble metal-based catalysts for emission control systems.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Multidisciplinary
Renju Lin, Qing Wang, Dongsheng Song, Chengping He, Kejun Hu, Zhiyao Liang, Haifeng Du, Ning Hao, Binghui Ge, Hai-Hu Wen
Summary: The atomic arrangement of carbonates in (Cu,C)Ba2Ca3Cu4O11+delta is directly visualized using state-of-the-art scanning transmission electron microscopy. The carbonates replace Cu atoms and contribute to the formation of carbonates through strong orbital hybridization. This study provides direct evidence of the presence of CO32- groups and gains insight into the underlying mechanism of superconductivity in oxycarbonate superconductors.
ADVANCED MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Kalsoom Akhtar, Sher Bahadar M. Khan, Esraa Bakhsh, Tahseen Kamal, Shahid M. Ahmad, Abdullah Asiri, Yasir Anwar
Summary: This study successfully prepared copper nanoparticle catalysts on alginate/glycyl leucine hybrid beads, which showed the highest performance in reducing various toxic compounds among all composite beads tested.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Ana Luiza P. Salgado, Felipe C. Araujo, Andre V. H. Soares, Yutao Xing, Fabio B. Passos
Summary: The study investigates Ruthenium-copper bimetallic catalysts supported on modified zirconia for the hydrogenolysis of glycerol to produce 1,2-propanediol. The addition of copper to the Ru-based catalysts resulted in decreased glycerol conversion and increased selectivity to 1,2-propanediol. The best performing catalyst was bimetallic Ru-Cu/m-ZrO2, while catalysts supported on 3%SO4-ZrO2 showed lower activity likely due to sulfur poisoning. Addition of Cu to Ru led to site blockage and tuning of selectivity towards C-O cleavage.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Multidisciplinary
Abdallah F. Zedan, Safa Gaber, Amina S. AlJaber, Kyriaki Polychronopoulou
Summary: Significant enhancement of the catalytic activity for CO oxidation reaction was achieved by alloying Pd-based catalysts and utilizing different support materials, especially through nanointerfaces and morphology effects. The Pd-Cu/TiO2 catalyst system, with optimized nanowire morphology, shows the highest CO conversion rate at near-ambient temperatures, demonstrating its potential as an efficient and durable catalyst for CO oxidation reaction.
Article
Multidisciplinary Sciences
Wongsaphat Mondach, Sarun Chanklang, Pooripong Somchuea, Thongthai Witoon, Metta Chareonpanich, Kajornsak Faungnawakij, Hiesang Sohn, Anusorn Seubsai
Summary: The hydrogenolysis of glycerol to 1,2-propanediol over Co-Cu bimetallic catalysts supported on TiO2 in aqueous media was investigated in this study. It was found that the addition of appropriate Cu increased the glycerol conversion and the 1,2-PDO yield. Operating conditions such as reaction temperature, initial pressure, and reaction time significantly affected the glycerol conversion and the selectivity to 1,2-PDO.
SCIENTIFIC REPORTS
(2021)
Article
Green & Sustainable Science & Technology
Kaiyan Wang, Yang Li, Haiyang Shi, Feng Chen, Ping Wang, Xuefei Wang
Summary: Modifying Pd cocatalysts is an effective strategy to improve H2O2 production of photocatalysts, however, it can lead to the further reduction of H2O2. In this study, Cu-Pd alloy cocatalysts were selectively modified on the electron-rich facets of BiVO4 to weaken the adsorption energy of oxygen and increase the activity and selectivity of O-2 reduction to H2O2. The optimized Cu-Pd/BiVO4 photocatalyst demonstrated significantly higher H2O2 production compared to BiVO4 with Pd cocatalyst.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Nanoscience & Nanotechnology
Roberta Gualdani, Andrea Guerrini, Elvira Fantechi, Francesco Tadini-Buoninsegni, Maria Rosa Moncelli, Claudio Sangregorio
Article
Biochemical Research Methods
Lathika Valliyott, Ranjeet Dungdung, Rajendra Pilankatta
ANALYTICAL BIOCHEMISTRY
(2020)
Article
Public, Environmental & Occupational Health
Arun Kumar Karayi, Vijaya Basavaraj, Saravu R. Narahari, Madhur Guruprasad Aggithaya, Terence J. Ryan, Rajendra Pilankatta
TROPICAL MEDICINE & INTERNATIONAL HEALTH
(2020)
Article
Pharmacology & Pharmacy
Francesca Maestrelli, Elisa Landucci, Enrico De Luca, Giulia Nerli, Maria Camilla Bergonzi, Vieri Piazzini, Domenico E. Pellegrini-Giampietro, Francesca Gullo, Andrea Becchetti, Francesco Tadini-Buoninsegni, Oscar Francesconi, Cristina Nativi
Review
Chemistry, Analytical
Francesco Tadini-Buoninsegni, Ilaria Palchetti
Review
Biochemistry & Molecular Biology
Francesco Tadini-Buoninsegni
Article
Nanoscience & Nanotechnology
Neeli Chandran, Manikanta Bayal, Rajendra Pilankatta, Swapna S. Nair
Summary: Novel solution process was used to synthesize 2D copper crystals with layer stacked metallic Cu nano structures forming triangular pyramidal shapes. The study on Surface Plasmon Resonance was conducted based on pH and concentration of L-serine. The results are valuable for the development of non-noble metal based SPR sensors.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Saranya Kothaplamoottil Sivan, Sarojini Sharath Shankar, N. Sajina, Akshaykumar Kandambath Padinjareveetil, Rajendra Pilankatta, V. B. Sameer Kumar, Beena Mathew, Bini George, Pooyan Makvandi, Miroslav Cernik, Vinod V. T. Padil, Rajender S. Varma
Article
Chemistry, Multidisciplinary
Susha Naranthatta, Prajit Janardhanan, Rajendra Pilankatta, Swapna S. Nair
Summary: The modern era of semiconductor nanotechnology is focusing on its application in biology, especially in medical sciences, to directly benefit human life. The fabrication of biosensing and bioimaging devices is a dynamic research topic, and recent studies have shown that surface treatment on nanoparticles enhances luminescence properties while reducing toxicity. Surface-modified CdS prepared with different medicinal leaf extracts has shown lower toxicity, multiple emissions in the visible region, and enhanced electrical properties, making it a promising option for future biological applications and modification of optoelectronic devices.
Article
Chemistry, Medicinal
Giacomo Sordi, Andrea Goti, Howard S. Young, Ilaria Palchetti, Francesco Tadini-Buoninsegni
Summary: This study proposed a method to investigate the mechanism of interaction between SERCA and novel SERCA activator CDN1163, revealing that CDN1163 can interact reversibly with SERCA and enhance ATP-dependent Ca2+ translocation under physiological conditions.
Article
Biochemistry & Molecular Biology
Francesco Tadini-Buoninsegni, Stine A. Mikkelsen, Louise S. Mogensen, Rikke Holm, Robert S. Molday, Jens Peter Andersen
Summary: The study reveals the electrogenicity of ATP8A2 and its potential phospholipid translocation pathway involving residues with positively charged side chains.
Article
Electrochemistry
Patrick Severin Sfragano, Ilaria Palchetti, Francesco Tadini-Buoninsegni
Summary: SERCA is crucial for maintaining cytosolic Ca2+ level and its dysfunction is associated with pathological conditions. 6-gingerol has been found to activate SERCA and enhance its calcium translocation activity. This discovery may have implications in the treatment of SERCA-related diseases.
ELECTROCHIMICA ACTA
(2023)
Article
Biochemistry & Molecular Biology
Louise S. Mogensen, Stine A. Mikkelsen, Francesco Tadini-Buoninsegni, Rikke Holm, Eli Matsell, Bente Vilsen, Robert S. Molday, Jens Peter Andersen
Summary: P4-ATPases, also known as flippases, play a crucial role in translocating specific lipids across cellular membranes, generating an asymmetric lipid distribution. This study found that in the flippase ATP8A2, the lipid substrate follows a translocation pathway between transmembrane segments M2 and M4 (M2-M4 path). Mutations in this pathway affected the function of the entry site and caused loss of lipid specificity in some mutants, indicating a conformational coupling between the M2-M4 path and the entry site. The residues in the M2-M4 path potentially interact with each other and the lipid substrate, resembling unzipping a zipper of salt bridges/hydrogen bonds.
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
(2024)
Article
Chemistry, Multidisciplinary
Ranjeet Dungdung, Manikanta Bayal, Lathika Valliyott, Unnikrishnan Unniyampurath, Swapna S. Nair, Rajendra Pilankatta
NANOSCALE ADVANCES
(2020)
Article
Nanoscience & Nanotechnology
Neeli Chandran, Prajit Janardhanan, Manikanta Bayal, Unnikrishnan Unniyampurath, Rajendra Pilankatta, Swapna S. Nair
ACS APPLIED BIO MATERIALS
(2020)
