Article
Chemistry, Multidisciplinary
Anna Pekkari, Xin Wen, Jessica Orrego-Hernandez, Robson Rosa da Silva, Shun Kondo, Eva Olsson, Hanna Harelind, Kasper Moth-Poulsen
Summary: This study presents the synthesis of monodisperse Pd nanoparticles stabilized by NaOL and CTAC, without traditional reductants. UV-Vis spectroscopy analysis shows that NaOL provides a faster and more effective reduction of Pd-precursors compared to CTAC. The colloidal stabilization of the NP surface by CTAC and NaOL is confirmed by FTIR and NMR analysis.
NANOSCALE ADVANCES
(2021)
Article
Polymer Science
Shang-Pin Wen, Qi Yue, Lee A. Fielding
Summary: This article reports the synthesis of PBzMA latexes through RAFT-mediated miniemulsion polymerisation, showing that the hydrophobe, initiator, and RAFT agent have significant influences on the properties of the latexes. Higher concentrations of hexadecane lead to an increase in particle number and a decrease in latex diameter.
Article
Chemistry, Multidisciplinary
Etab M. Almutairi, Mohamed A. Ghanem, Abdulrahman Al-Warthan, Mufsir Kuniyil, Syed F. Adil
Summary: This study presents the synthesis of ultrathin copper oxide nanosheets (CuO-NS) using a versatile foam-surfactant dual template (FSDT) approach and demonstrates their electro-oxidation and sensing performance for hydrazine. The CuO-NS were prepared by chemical deposition of dissolved copper ions in a hexagonal surfactant template using hydrogen foam generated by a reducing agent. The CuO-NS exhibited superior oxidation performance compared to bare-CuO, with a high hydrazine sensitivity, low detection limit and a linear concentration range. Additionally, CuO-NS showed potential for practical hydrazine detection in water samples with good recovery, and the FSDT approach can be used to synthesize a wide range of nanomaterials for boosting electrochemical catalytic reactions.
Article
Materials Science, Multidisciplinary
Mohammad Ali Kamyabi, Salma Jadali
Summary: In this study, Pd-2/NF-PMS catalyst was successfully synthesized using a template method, showing excellent performance in methanol oxidation with higher activity and lower onset potential compared to Pt/C, making it a promising candidate for the commercialization of direct methanol fuel cells.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Pharmacology & Pharmacy
Jong-Ju Lee, Linh Dinh, Juhyun Park, Rama Khraisat, Jun Woo Park, Jae Kwan Jeong, Juseung Lee, Hyun Sil Kim, Moo Suk Park, Jun-Hyun Ahn, Sung-Joo Hwang
Summary: This study prepared lysozyme-loaded liposomal dry powder inhalers using various non-ionic surfactants and characterized their properties. The results showed that the formulation with a drug to PS 80 ratio of 1:0.5 w/w maintained protein activity while demonstrating good aerosol performance.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Polymer Science
Dan-Jae Lin, Hao-Lian Lin, Ssu-Meng Haung, Shih-Ming Liu, Wen-Cheng Chen
Summary: By assisted synthesis with surfactants, non-toxic hydroxyapatite nanoparticles can be obtained under different environments, showing excellent biocompatibility and cell viability in biomedical applications.
Article
Chemistry, Multidisciplinary
Haoran Liu, Kai Ikeda, Mai Thanh Nguyen, Susumu Sato, Naoki Matsuda, Hiroki Tsukamoto, Tomoharu Tokunaga, Tetsu Yonezawa
Summary: A one-step preparation method of alginate-stabilized gold nanoparticles using MWPLP was reported, with alginate affecting the reaction rate and providing long-term stability. An abnormal size change of Au NPs during growth was observed, with a possible mechanism proposed. Drying and redispersion of Au NPs in alginate solution had little effect, suggesting it as an effective technique for long-term storage. The alginate-stabilized Au NPs show promise for biomedical applications without the need for toxic agents.
Article
Chemistry, Physical
Ngoc Hoi Nguyen, Ngoc-Hang Truong-Thi, Dinh Tien Dung Nguyen, Yern Chee Ching, Ngoc Trinh Huynh, Dai Hai Nguyen
Summary: This study aims to use non-ionic surfactants as co-templates with Cetrimonium bromide to control the mesopore diameter of hollow mesoporous silica nanoparticles (HMSN), and evaluate its influence through various experiments and analysis. The results of this study are of great importance in the field of drug delivery.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Haya Alsubaie, Zoya Zaheer, Elham Shafik Aazam
Summary: In this study, Silver nanoparticles (AgNPs) were prepared using SDS and CTAB stabilizers for the reduction of silver nitrate with proanthocyanidines. The SPR intensity of AgNPs increased with SDS and remained constant at higher concentrations, while CTAB had no effect on the nucleation of AgNPs. The position of SPR band was influenced by the concentration of Pas, and the capping action of SDS was discussed using various spectroscopic and microscopic techniques.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Giselle Kalline Gomes Carvalho Barros, Lindemberg Jesus Nogueira Duarte, Ricardo Paulo Fonseca Melo, Francisco Wendell Bezerra Lopes, Eduardo Lins Barros Neto
Summary: Ionic micellar flocculation is an effective method for removing dyes from industrial wastewater, using a combination of anionic surfactants and calcium ions to form flocculants. By adjusting the dye concentration, surfactant concentration, pH, and presence of electrolytes, maximum removal efficiency can be achieved.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Laure Wiest, Barbara Giroud, Azziz Assoumani, Francois Lestremau, Emmanuelle Vulliet
Summary: A multi-family analytical strategy for quantifying surfactants in surface waters was developed, optimized, and validated, with the method suitable for monitoring low concentrations of surfactants. Anionic, cationic, and non-ionic surfactants were detected in French river water samples, with median concentrations ranging from 24 ng/L to 4.6 μg/L.
Article
Chemistry, Physical
G. M. Arzac, O. Montes, A. Fernandez
Summary: In this study, a series of Pd catalysts supported on commercially available activated carbon (Norit(R)) were prepared using different metal precursors (Pd(NO3)2 and Na2PdCl4) at different pH. The best catalytic activity and small particle size were achieved for the Pd/C sample prepared with Pd(NO3)2 salt impregnated at pH = 2.5 and reduced with sodium borohydride. The catalytic activity was found to be size-dependent and a mixture of surface Pd0 and PdII oxidation states was beneficial for the activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Ju-Won Oh, Ashkan Vakilipour Takaloo, Sung-Doo Baek, Jae-Min Myoung
Summary: The use of a Pd nanoparticle anchored TiO2 nanorod electrode can enhance the light-emission properties of ECLDs, significantly reducing the minimum driving voltage for multi-color ECLDs.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Fang Zhang, Shuang Zong, Yue Zhang, Haijun Lv, Xinying Liu, Juan Du, Aibing Chen
Summary: By utilizing mesoporous silica template to prepare N-doped HCS, direct carbon formation can be achieved, simplifying the preparation process. The thickness of the HCS shell, morphology, and surface properties can be adjusted, leading to high electrochemical performance as an active electrode material in supercapacitors.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Xuequan Xu, Jinying Zhang, Na Yang, Xuewen Zhao, Mengyue Gu, Yonghong Cheng, Chunming Niu
Summary: Hollow sphere structures with high specific surface area have attracted attention in the catalytic field. In this study, Ni3S2/MoS2 porous hollow spheres with uniform distribution were synthesized on Ni foam using a one-step hydrothermal method. The as-produced spheres exhibited excellent catalytic performance in the oxygen evolution reaction.
Article
Chemistry, Physical
S. C. Perry, G. Denuault
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
Article
Electrochemistry
Heinz Buelter, Guy Denuault, Stefan Matefi-Tempfli, Maria Matefi-Tempfli, Carsten Dosche, Gunther Wittstock
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Physical
Saddam M. Al-Mahmoud, James W. Dibden, John R. Owen, Guy Denuault, Nuria Garcia-Araez
JOURNAL OF POWER SOURCES
(2016)
Article
Chemistry, Physical
S. C. Perry, G. Denuault
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
G. L. Pesce, C. R. Bowen, J. Rocha, M. Sardo, G. C. Allen, P. J. Walker, G. Denuault, M. Serrapede, R. J. Ball
Article
Electrochemistry
Saiful Arifin Bin Shafiee, Andrew L. Hector, Guy Denuault
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Multidisciplinary
Peter R. Birkin, Steven Linfield, Guy Denuault, Ronald Jones, Jack J. Youngs, Emily Wain
Article
Chemistry, Physical
Peter R. Birkin, Steven Linfield, Jack J. Youngs, Guy Denuault
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Electrochemistry
Cybelle Oliveira Soares, Oliver Rodriguez, Gaetan Buvat, Matteo Duca, Sebastien Garbarino, Daniel Guay, Guy Denuault, Ana C. Tavares
ELECTROCHIMICA ACTA
(2020)
Article
Chemistry, Analytical
Oliver Rodriguez, Guy Denuault
Summary: Sampled current voltammetry is used to study electron transfer kinetics, producing easily analyzable current-potential curves for diffusion-controlled processes. Analysis of SCVs and SQVs helps unravel the electrode response dependence on potential and time. Different data treatments can derive kinetic parameters.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Electrochemistry
Oliver Rodriguez, Guy Denuault
Summary: The study utilized microelectrodes and SECM to investigate the influence of molecular oxygen and local pH changes on the electrochemistry of Pt oxide. The experiments revealed that in neutral media, O-2 significantly affects the formation of Pt oxides due to the high local pH arising from the oxygen reduction reaction. This leads to the formation of oxide at much lower potentials than anticipated from the bulk pH.
Article
Chemistry, Physical
Cybelle Oliveira Soares, Gaetan Buvat, Yoandris Gonzalez Hernandez, Sebastien Garbarino, Matteo Duca, Andreas Ruediger, Guy Denuault, Ana C. Tavares, Daniel Guay
Summary: Au (001) thin films of varying thickness were deposited on MgO (001) substrates using pulsed laser deposition. Analysis revealed nonmonotonic dependence of lattice parameters on film thickness and showed that the electrocatalytic activity for ORR in alkaline electrolytes increased with lateral coherence length of the films.
Article
Chemistry, Multidisciplinary
Ana A. Folgueiras-Amador, Alexander E. Teuten, Mateo Salam-Perez, James E. Pearce, Guy Denuault, Derek Pletcher, Philip J. Parsons, David C. Harrowven, Richard C. D. Brown
Summary: The electro-reductive radical cyclisation of aryl halides using an organic mediator in an undivided flow reactor is a practical and efficient method to synthesize hetero- and carbo-cycles. The use of a sub-stoichiometric amount of mediator increases its practical utility. This methodology is versatile and can be applied to different tethering groups, resulting in the formation of diverse cyclic compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Peter R. Birkin, Steven Linfield, Guy Denuault
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)