Article
Materials Science, Ceramics
Lele Wang, Yueyuan Gu, Hailu Dai, Yanru Yin, Lei Bi
Summary: BaSrInFeO5 (BSIF) is a new cathode material designed for proton-conducting solid oxide fuel cells (SOFCs) by modifying the Ba2In2O5 proton conductor with Sr and Fe cations. Sr doping improves the chemical stability, formation of oxygen vacancies, and proton mobility of the material. Experimental studies and first-principles calculations demonstrate that an H-SOFC using the BSIF cathode achieves a high peak power density of 1192 mW cm-2 at 700 oC, surpassing previous reports. This study suggests that derived cathode materials from less-studied Ba2In2O5 could offer new material selections for H-SOFCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Adrien Perrichon, Michael M. Koza, Zach Evenson, Bernhard Frick, Franz Demmel, Peter Fouquet, Maths Karlsson
Summary: This study investigates the mechanism of proton diffusion in partially and fully hydrated barium indate oxide proton conductors Ba(2)In(2)O(5)(H2O)( x ) (x = 0.30 and 0.92) using quasielastic neutron scattering (QENS) and ab initio molecular dynamics (AIMD) simulations. The results show that the main localized dynamics of the protons involves rotational diffusion of O-H(1) species and proton transfers between neighboring oxygen atoms. The presence of a third proton site, H(3), is revealed in the fully hydrated material, which enables long-range anisotropic diffusion of protons. However, in the partially hydrated material, the hindered dynamics of H(2) protons near oxygen vacancies prevent the occupation and subsequent long-range diffusion of the H(3) site.
CHEMISTRY OF MATERIALS
(2023)
Article
Multidisciplinary Sciences
S. Li, R. Cruz-Torres, N. Santiesteban, Z. H. Ye, D. Abrams, S. Alsalmi, D. Androic, K. Aniol, J. Arrington, T. Averett, C. Ayerbe Gayoso, J. Bane, S. Barcus, J. Barrow, A. Beck, V Bellini, H. Bhatt, D. Bhetuwal, D. Biswas, D. Bulumulla, A. Camsonne, J. Castellanos, J. Chen, J-P Chen, D. Chrisman, M. E. Christy, C. Clarke, S. Covrig, K. Craycraft, D. Day, D. Dutta, E. Fuchey, C. Gal, F. Garibaldi, T. N. Gautam, T. Gogami, J. Gomez, P. Gueye, A. Habarakada, T. J. Hague, J. O. Hansen, F. Hauenstein, W. Henry, D. W. Higinbotham, R. J. Holt, C. Hyde, T. Itabashi, M. Kaneta, A. Karki, A. T. Katramatou, C. E. Keppel, M. Khachatryan, V Khachatryan, P. M. King, I Korover, L. Kurbany, T. Kutz, N. Lashley-Colthirst, W. B. Li, H. Liu, N. Liyanage, E. Long, J. Mammei, P. Markowitz, R. E. McClellan, F. Meddi, D. Meekins, S. Mey-Tal Beck, R. Michaels, M. Mihovilovic, A. Moyer, S. Nagao, V Nelyubin, D. Nguyen, M. Nycz, M. Olson, L. Ou, V Owen, C. Palatchi, B. Pandey, A. Papadopoulou, S. Park, S. Paul, T. Petkovic, R. Pomatsalyuk, S. Premathilake, V Punjabi, R. D. Ransome, P. E. Reimer, J. Reinhold, S. Riordan, J. Roche, V. M. Rodriguez, A. Schmidt, B. Schmookler, E. P. Segarra, A. Shahinyan, K. Slifer, P. Solvignon, S. Sirca, T. Su, R. Suleiman, H. Szumila-Vance, L. Tang, Y. Tian, W. Tireman, F. Tortorici, Y. Toyama, K. Uehara, G. M. Urciuoli, D. Votaw, J. Williamson, B. Wojtsekhowski, S. Wood, J. Zhang, X. Zheng
Summary: When protons and neutrons bind into atomic nuclei, they experience strong interactions that lead to high-energy collisions and the formation of nucleon pairs called short-range correlations (SRCs). SRCs are an important but poorly understood part of nuclear structure, and measuring their strength and isospin structure is crucial for various physics measurements. Previous experiments have shown that SRCs are predominantly neutron-proton pairs, but they lacked statistical significance and required model-dependent corrections. In this study, inclusive scattering measurements from hydrogen-3 and helium-3 mirror nuclei are used to extract the np/pp ratio of SRCs, providing a more precise measure than previous experiments and revealing a deviation from the expected dominance of np pairs in heavy nuclei. This unexpected result suggests an interesting structure in the high-momentum wavefunction of hydrogen-3 and helium-3, improving our understanding of the short-range nucleon-nucleon interaction.
Article
Chemistry, Physical
Runzhi Qin, Shouxiang Ding, Chenxin Hou, Lele Liu, Yuetao Wang, Wenguang Zhao, Lu Yao, Yuanlong Shao, Ruqiang Zou, Qinghe Zhao, Shunning Li, Feng Pan
Summary: Through studying the spinel ZnMn2O4 cathode, it is revealed that the deficiency of Zn ions in nonstoichiometric samples can enhance the specific capacity at high rates, mainly contributed by proton storage. Moreover, the motion restriction of Zn ions in the spinel phase provides the material with high structural stability, preventing the recombination of external Zn ions with Zn vacant sites that easily accommodate protons. This work highlights the importance of controlled off-stoichiometry in optimizing proton transport and storage for aqueous batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Astronomy & Astrophysics
Xing-Hua Yang, Fei Huang, Ji Xu
Summary: We investigated neutrino-nucleon deep inelastic scattering with a focus on short-range correlation (SRC) and the European Muon Collaboration (EMC) effect, and their impact on the determination of the weak-mixing angle sin2 OW. We presented the ratios of relevant structure functions for carbon, iron, and lead nuclei. A universal modification function was proposed to test the SRC universality in neutrino-nucleon deep inelastic scattering. Additionally, we studied the impact of SRC-driven nuclear effects on the extraction of sin2 OW, which is related to the NuTeV anomaly. The results indicated that these effects could explain a significant fraction of the NuTeV anomaly and considerably affect the extracted value of sin2 OW.
Article
Chemistry, Inorganic & Nuclear
Roman V. Bazhan, Vladimir B. Nalbandyan, Tatyana M. Vasilchikova, Hyun-Joo Koo, Myung-Hwan Whangbo, Alexander N. Vasiliev
Summary: The missing member of the rosiaite family, CoGeTeO6, was synthesized and characterized. It exhibits short- and long-range magnetic ordering at different temperatures and its magnetic structure consists of three-dimensional antiferromagnetic lattices. The experimental and computational results show good agreement under different ion treatments.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Ceramics
Xuan Yang, Yangsen Xu, Shoufu Yu, Lei Bi
Summary: A new spinel oxide CFLO has been synthesized and used as a cathode material for proton-conducting solid oxide fuel cells. The doping of Li significantly regulates the electronic structure and creates more oxygen vacancies, improving the cathode performance. The CFLO cathode shows superior performance and long-term stability in various testing temperatures, making it a promising material for H-SOFCs.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Namhoon Kim, Brian J. Blankenau, Tianyu Su, Nicola H. Perry, Elif Ertekin
Summary: The study demonstrates the application of a multisublattice cluster expansion framework to investigate the structure-property relations of iron-substituted strontium titanate (STF). By implementing the LASSO regression analysis tool, accurate prediction of configurational energies is achieved. Key clusters, such as short-range ordering between substitutional Fe and oxygen vacancies, are identified as significant contributors to the material properties.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Astronomy & Astrophysics
Wanli Xing, Xuan-Gong Wang, Anthony W. Thomas
Summary: Recent experimental studies suggest that short-range correlations may be a major contributor to the nuclear EMC effect, and this correlation leads to the suppression of the nucleon structure function and elastic form factors.
Article
Chemistry, Physical
Sathish Rajendran, Naresh Kumar Thangavel, Samia Alkatie, Yi Ding, Leela Mohana Reddy Arava
Summary: Tri-doping of barium cerium zirconate with rare earth elements Pr, Gd, and Y was studied to enhance sinterability, chemical stability, and proton conductivity. Varying the concentrations of dopants showed significant effects on the microstructure and conductivity of the electrolyte materials. The tri-doped electrolytes exhibited excellent chemical stability and high proton conductivity values at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zetian Tao, Min Fu, Yong Liu, Yongji Gao, Hua Tong, Wenjing Hu, Libin Lei, Lei Bi
Summary: In this study, a series of W doped Pr0.5Ba0.5(Co0.7Fe0.3)O3-delta (PBCF) were prepared and characterized as cathodes for proton-conducting solid oxide fuel cell (H-SOFC). The enhancement of proton migration and formation ability through W doping significantly increases the cell performance, which was further verified by density functional theory (DFT) simulation, indicating that high valence element doping can be a potential approach for cathode design.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Ceramics
Shoufu Yu, Yu Wang, Lei Bi
Summary: This study reported the partial replacement of Ce with U in the proton-conducting oxide BCY to form the BCUY compound, which showed improved chemical stability against CO2 at the cost of inhibiting grain growth and reducing conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Libin Lei, Yongzhen Ou, Ruiming Qiu, Wenchao Lian, Yingyu Mo, Jihao Zhang, Zhicong Shi, Jianping Liu, Chao Wang, Ying Chen
Summary: An electrochemical model of PCECs was developed in this study to evaluate and compare the performance in different operating modes, revealing that the hydrogen pump mode achieves higher energy efficiency. Additionally, introducing steam to the anode side was found to have a positive impact on the electrochemical performance of PCECs.
JOURNAL OF POWER SOURCES
(2022)
Review
Chemistry, Physical
Idris Temitope Bello, Shuo Zhai, Siyuan Zhao, Zheng Li, Na Yu, Meng Ni
Summary: Proton-conducting solid oxide fuel cells (P-SOFCs) show great potential for energy conversion with high efficiency and temperature adaptability, but research and development in this field are still limited globally.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Keyou Shi, Yanru Yin, Zengming Tang, Shoufu Yu, Qiucai Zhang
Summary: A slight deficiency of Ba in BaCoO3 improves its chemical stability, protonation, and surface catalytic activity, resulting in enhanced fuel cell performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Giulia Festa, Adriana P. Mamede, David Goncalves, Eugenia Cunha, Winfried Kockelmann, Stewart F. Parker, Luis A. E. Batista de Carvalho, Maria Paula M. Marques
Summary: The first neutron diffraction study of in-situ anaerobic burning of human bones investigates the heat-induced changes in bone structure. The study reveals the structural reorganization of bone matrix at different temperatures and the absence of carbonates and organic constituents at high temperatures. These findings contribute to a better understanding of heat-prompted changes in bone and have implications in forensic science, archeology, and other biomaterial studies.
ANALYTICAL CHEMISTRY
(2023)
Article
Instruments & Instrumentation
Adrien Perrichon, Claudio Bovo, Stewart F. Parker, Davide Raspino, Jeff Armstrong, Victoria Garcia Sakai
Summary: We propose an upgrade to TOSCA, the indirect-geometry broad-band chemical spectrometer at ISIS Neutron and Muon Source, UK. The new design of the secondary spectrometer is expected to significantly increase the detected intensity, improve the spectral resolution and enhance the signal-to-noise ratio. The upgrade will enable TOSCA to tackle new and challenging experiments, ensuring its competitiveness in the future.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Chemistry, Physical
F. Oemry, I. B. Adilina, W. T. Cahyanto, N. Rinaldi, F. Aulia, A. Jackson, S. F. Parker, A. B. Kroner, E. J. Shotton
Summary: We studied the intermediate and sulfided structures of NiMo supported on Al-PILC during catalyst activation and guaiacol adsorption on the sulfided catalyst. XAFS and DFT calculations confirmed the presence of suboxides and subsulfides at first, which later transformed into MoS2 and oxygen-decorated Mo and Ni. The sulfided NiMoS2 catalyst was terminated by Mo-edge surface with 50% sulfur coverage and had a disordered Ni-edge surface. Guaiacol weakly chemisorbed via oxygen atom of OH group and physisorbed on the basal plane of NiMoS2 via van der Waals interaction.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
A. Yangui, T. Sand, T. Helander, L. -G. Johansson, M. Karlsson
Summary: In this study, the technique of phosphor thermometry was evaluated for the precise measurement of surface temperature of a composite material containing FeCrAl metallic alloy and YAG phosphor particles doped with Ce3+ ions. The results demonstrate that by optimizing the parameters and changing the dopant ion, YAG based phosphor particles can accurately measure the surface temperature of metal alloys up to the maximum working temperature of 1300 degrees C.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Alexander P. Hawkins, Andrea Zachariou, Stewart F. Parker, Paul Collier, Nathan S. Barrow, Russell F. Howe, David Lennon
Summary: The cracking reactions of 1-octene over H-ZSM-5 zeolite were investigated, and it was found that it follows a dual-cycle hydrocarbon pool mechanism similar to methanol-to-hydrocarbons chemistry. Higher temperatures are required for full efficiency, while lower temperatures lead to deactivation and coke deposition. Inelastic neutron scattering was used to study coke composition, revealing two distinct deactivation mechanisms depending on reaction temperature. Steam treatment of the zeolite delayed catalyst activation and resulted in increased light olefin production, with slower deactivation compared to fresh zeolite.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Adrien Perrichon, Michael M. Koza, Zach Evenson, Bernhard Frick, Franz Demmel, Peter Fouquet, Maths Karlsson
Summary: This study investigates the mechanism of proton diffusion in partially and fully hydrated barium indate oxide proton conductors Ba(2)In(2)O(5)(H2O)( x ) (x = 0.30 and 0.92) using quasielastic neutron scattering (QENS) and ab initio molecular dynamics (AIMD) simulations. The results show that the main localized dynamics of the protons involves rotational diffusion of O-H(1) species and proton transfers between neighboring oxygen atoms. The presence of a third proton site, H(3), is revealed in the fully hydrated material, which enables long-range anisotropic diffusion of protons. However, in the partially hydrated material, the hindered dynamics of H(2) protons near oxygen vacancies prevent the occupation and subsequent long-range diffusion of the H(3) site.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Stewart F. Parker, A. Dominic Fortes, Daniel W. Nye, Sarah J. Day, Dietmar Kuck
Summary: The structure and vibrational spectroscopy of centrohexaindane were studied. The molecule has tetrahedral symmetry in solution, but a triclinic or monoclinic structure in the solid state. The vibrational spectroscopy indicates the presence of at least two molecules in the primitive cell, possibly with centrosymmetric space group.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Energy & Fuels
Erwin Lalik, Stewart F. Parker, Gavin Irvine, Ivan da Silva, Matthias Josef Gutmann, Giovanni Romanelli, Kacper Druzbicki, Robert Kosydar, Matthew Krzystyniak
Summary: This study characterizes the nuclear quantum dynamics of hydrogen in Pd/cWO(3) using neutron Compton scattering and ab initio modeling. Neutron Compton scattering, with its deeply penetrating nature and high sensitivity, is a powerful tool for investigating hydrogen dynamics in bulk matrices. The analysis reveals three pools of hydrogen with different nuclear quantum dynamical behavior: hydrogen-terminated beta-palladium hydride, hydrogen in acid centers on the surface of the cubic phase of tungsten oxide, and quasi-free atomic hydrogen resulting from the hydrogen spillover process. The theoretical predictions obtained from ab initio modeling provide insights into the momentum distribution of the quasi-free atomic hydrogen. The picture of the local dynamics of the quasi-free hydrogen is consistent with the proton polaron model of hydrogen-induced coloration of bulk hydrogenated WO3.
Article
Instruments & Instrumentation
Ali Mortazavi, Fu Song, Michael Dudman, Michael Evans, Robert Copcutt, Giovanni Romanelli, Franz Demmel, David H. Farrar, Stewart F. Parker, Kun V. Tian, Devis Di Tommaso, Gregory A. Chass
Summary: This article presents a self-contained reactor rig designed for continuous solution circulation in the CO2 mineralization process. The reactor rig provides a homogeneous reaction mixture, controlled CO2 flux, and temperature and pressure regulation. The design is discussed in detail, and the functionality and results are demonstrated.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Review
Chemistry, Physical
Andrea Zachariou, Alexander P. Hawkins, Paul Collier, Russell F. Howe, Stewart F. Parker, David Lennon
Summary: The methanol-to-hydrocarbons reaction is an important industrial process that uses zeolite catalysts to produce light olefins and methylated benzenes. While it has been extensively studied using various physical and spectroscopic methods, neutron scattering has been underutilized. Neutron methods can provide unique insights into the catalyst and the different stages of the process. In this mini-review, we discuss the application of neutron scattering in studying the methanol-to-hydrocarbons reaction and its potential contributions to further research.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Stewart F. F. Parker, Jessica E. E. Trevelyan, Hamish Cavaye
Summary: We have measured the spectra of oligothiophenes and polythiophene, both pristine and after doping with iodine. The spectra converged towards that of polythiophene, showing only small changes in the INS spectra compared to dramatic changes in the infrared and Raman spectra on doping. The electronic structure modification accounted for the major changes observed.
Article
Chemistry, Analytical
Giulia Festa, Adriana P. Mamede, David Goncalves, Eugenia Cunha, Winfried Kockelmann, Stewart F. Parker, Luis A. E. Batista de Carvalho, Maria Paula M. Marques
Summary: The first neutron diffraction study on the in-situ anaerobic burning of human bones was conducted to interpret heat-induced changes in bone, previously detected using vibrational spectroscopy. Structural and crystallinity variations were observed in human femur, tibia, and reference hydroxyapatite samples when heated under anaerobic conditions. The study provides insight into the structural reorganization of the bone matrix at different temperatures and can contribute to the understanding of heat-prompted changes in bone, which can serve as biomarkers for burning temperature. This information is important for forensic science, archaeology, and other biomaterial studies.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Annelouise M. Mccullagh, Emma K. Gibson, Stewart F. Parker, Keith Refson, David Lennon
Summary: The adsorption geometry of nitrobenzene on a 5 wt% Pd/Al2O3 catalyst is investigated using infrared spectroscopy and density functional theory calculations.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Hamish Cavaye, Christos E. Ballas, Winfried Kockelmann, David Lennon, Paul Collier, Andrew P. E. York, Peter W. Albers, Stewart F. Parker
Summary: In this study, in situ neutron imaging was used to observe the adsorption/absorption of hydrogen within a packed catalyst bed of a Pd/C catalyst. The spatial resolution was approximately 430 μm and the temporal resolution was approximately 9 s. Additionally, the H-2/D-2 exchange process across the catalyst bed was monitored in real time.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Annelouise M. Mccullagh, Emma K. Gibson, Stewart F. Parker, Keith Refson, David Lennon
Summary: The adsorption geometry of nitrobenzene on a 5 wt% Pd/Al2O3 catalyst is investigated using infrared spectroscopy and DFT calculations. It is found that the adsorption complex occurs vertically or tilted with respect to the metal surface, with a single Pd-O bond. However, there is a contradiction between the calculated and observed structures, which can be attributed to the difference between isolated molecule adsorption and multi molecule adsorption. Furthermore, the adsorption geometry of nitrobenzene is closely related to the high aniline selectivity observed for Pd/Al2O3 catalysts.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
