Article
Energy & Fuels
Amr Abdalla, Mohanned Mohamedali, Nader Mahinpey
Summary: Modifying CuO/ZrO2 oxygen carriers by adding WO3 can significantly increase the oxygen capacity, promote the formation of Cu-W intermediate phases, and enhance the redox characteristics of the oxygen carriers. Samples synthesized via coimpregnation method show higher oxygen release capacity, with higher Cu/W ratio and larger crystallite structure.
Article
Chemistry, Physical
Flavia P. N. Inbanathan, Katherine Leslee A. Cimatu, David C. C. Ingram, Uriel Joseph Erasquin, Kiran Dasari, Muhammad Shehzad Sultan, Muhammad Sajjad, Vladimir Makarov, Brad R. R. Weiner, Gerardo Morell, Payman Sharifi Abdar, Wojciech M. M. Jadwisienczak
Summary: This study demonstrates the room-temperature paramagnetism in graphene quantum dots doped with nitrogen up to 3.26%. The synthesized nitrogen-doped graphene quantum dots were carefully characterized for their morphology, optical properties, and magnetic behavior using various techniques. The results show a hexagonal crystalline structure and the presence of pyridinic nitrogen configuration, which exhibits paramagnetic behavior at room temperature with a magnetization of 20.8 emu/g.
Article
Chemistry, Physical
Yousra Abdelbaki, Agustin de Arriba, Benjamin Solsona, Daniel Delgado, Ester Garcia-Gonzalez, Rachid Issaadi, Jose M. Lopez Nieto
Summary: Nickel oxides supported on gamma-alumina were synthesized and tested in the ODH of ethane to investigate the importance of the NiO-support interaction. The study found that the nickel oxide-support interaction, in addition to NiO crystal size, determines the catalytic performance of these catalysts. The catalyst with 15 wt% NiO showed the best performance, with higher or lower NiO-loadings resulting in less desirable properties.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Physics, Applied
Jeremy Fleury, Luc Burnier, Andreas Schueler
Summary: This study investigates the optical and electronic properties of nanoporous amorphous molybdenum-doped tungsten trioxide thin films and demonstrates their potential for color neutral and spectral transmission control in electrochromic devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Vishnu Chauhan, Deepika Gupta, Sonica Upadhyay, Aman Mahajan, Anurag Gaur, Shalendra Kumar, Rajesh Kumar
Summary: This study investigates the effects of gamma radiation on the structural, optical, and surface properties of ZrO2 nanocrystalline thin films. The results demonstrate that gamma irradiation induces significant changes in the ZrO2 thin films, including shifts in crystal structures, variations in optical band gaps, and modifications in surface morphology.
Article
Materials Science, Multidisciplinary
V. Vershinnikov, D. Yu Kovalev, T. I. Ignat'eva
Summary: The study focused on the self-propagating high-temperature synthesis process driven by the combustion of a multicomponent mixture, showing the significant impact of oxide phase ratio and excess Mg content on phase composition. By optimizing the composition of the starting mixture, a W < Zr, Ti > alloy was successfully synthesized with chemical and X-ray diffraction analysis confirming its similarity to W0.66Zr0.17Ti0.17.
INORGANIC MATERIALS
(2021)
Article
Engineering, Environmental
Sithara P. Sreenilayam, Eanna McCarthy, Lorcan McKeon, Oskar Ronan, Ronan McCann, Karsten Fleischer, Brian Freeland, Valeria Nicolosi, Dermot Brabazon
Summary: This study reported the development of additive-free silver nano particle inks via flow-based Laser Ablation Synthesis in Solution (LASiS) system and Aerosol Jet printing. The results demonstrated that LASiS is a versatile method for the scalable production of next generation printed electronic components and devices.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Harald Norrud Pollen, Inger-Emma Nylund, Oystein Dahl, Ann Mari Svensson, Daniel Brandell, Reza Younesi, Julian Richard Tolchard, Nils Peter Wagner
Summary: Ni-rich layered oxides are promising cathode materials for Li-ion batteries, but their short cycle life can be improved by applying a protective surface coating. In this study, LiNi0.88Mn0.06Co0.06O2 is surface-modified using octadecyl phosphonic acid, which reduces the surface reactivity and enhances the capacity retention. High-temperature post-treatments, however, do not improve the electrochemical performance.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Kristen Mardenborough, Maya Florentino, Robert Haxhari, Yu-Chung Lin, Miriam Rafailovich, Gary Halada, Hye Jung Jung, Taejin Kim
Summary: This study investigates the decolorization process of cotton fabric through treatment with different concentrations of sodium hydroxide (NaOH). Various characterization methods including scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray diffractometry were used to analyze the structure and properties of the treated fabric. The results show that the decolorization process does not alter the cellulose structure, and the crystallite size of cellulose remains unaffected. However, the intensity of the dye decreases as the NaOH concentration increases.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Roger Guzman, Shoucong Ning, Ruizi Zhang, Hongtao Liu, Yinhang Ma, Yu-Yang Zhang, Lihong Bao, Haitao Yang, Shiduan Du, Michel Bosman, Stephen J. Pennycook, Hong-Jun Gao, Wu Zhou
Summary: In this study, the local atomic structure and magnetic behavior of V-rich V1+xTe2 nanoplates with embedded V3Te4 nanoclusters have been investigated. The self-intercalated V3Te4 magnetic phase, which possesses a distorted 1T'-like monoclinic structure, is locally stabilized by V intercalations. The phase transition is controlled by the electron doping from the intercalant V ions. The results provide insights into the studies of dilute magnetism at the 2D limit and strategies for the manipulation of magnetism for spintronic applications.
Article
Chemistry, Multidisciplinary
Zhaozhong Fan, Ruichun Luo, Yanxue Zhang, Bo Zhang, Panlong Zhai, Yanting Zhang, Chen Wang, Junfeng Gao, Wu Zhou, Licheng Sun, Jungang Hou
Summary: Researchers have developed an indium-nickel dual-atom catalyst that exhibits high CO selectivity and achieves a high industrial CO partial current density. The synergistic effect of the dual-sites and oxygen bridge in the catalyst reduces the reaction barrier for *COOH formation and suppresses the undesired hydrogen evolution reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Multidisciplinary
Qin Wang, Jie Zhang, Jierui Huang, Jinan Shi, Shuai Zhang, Hui Guo, Li Huang, Hong Ding, Wu Zhou, Yan-Fang Zhang, Xiao Lin, Shixuan Du, Hong-Jun Gao
Summary: Researchers successfully synthesized a monolayer of gold telluride (AuTe) with a honeycomb structure, which suggests that it could be a good candidate for studying two-dimensional Dirac nodal line fermions.
Article
Multidisciplinary Sciences
Qiangbing Guo, Xiao-Zhuo Qi, Lishu Zhang, Meng Gao, Sanlue Hu, Wenju Zhou, Wenjie Zang, Xiaoxu Zhao, Junyong Wang, Bingmin Yan, Mingquan Xu, Yun-Kun Wu, Goki Eda, Zewen Xiao, Shengyuan A. Yang, Huiyang Gou, Yuan Ping Feng, Guang-Can Guo, Wu Zhou, Xi-Feng Ren, Cheng-Wei Qiu, Stephen J. Pennycook, Andrew T. S. Wee
Summary: A van der Waals crystal, niobium oxide dichloride (NbOCl2), has been found to exhibit weakened interlayer electronic coupling and monolayer-like excitonic behavior in the bulk form. It also has a scalable second-harmonic generation intensity that is three orders higher than that in monolayer WS2. Additionally, the strong second-order nonlinearity in thin flakes as thin as 46 nm enables correlated parametric photon pair generation through a spontaneous parametric down-conversion (SPDC) process. This is the first SPDC source demonstrated in two-dimensional layered materials and the thinnest SPDC source ever reported. This research opens avenues for developing van der Waals material-based ultracompact on-chip SPDC sources and high-performance photon modulators in both classical and quantum optical technologies.
Article
Chemistry, Multidisciplinary
Qi Zhang, Mi Peng, Zirui Gao, Wendi Guo, Zehui Sun, Yi Zhao, Wu Zhou, Meng Wang, Bingbao Mei, Xian-Long Du, Zheng Jiang, Wei Sun, Chao Liu, Yifeng Zhu, Yong-Mei Liu, He-Yong He, Zhen Hua Li, Ding Ma, Yong Cao
Summary: The study presents a biomimetic system that can imitate or surpass natural enzymes for bioinspired syntheses of non-natural reactions. Through the development of this widely applicable platform, the scalable synthesis of over 100 industrially and pharmaceutically appealing O-silylated compounds is demonstrated. This heterogeneous oxidase mimic also has potential for expanding the catalytic scope of enzymatic synthesis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Songge Li, Yun-Peng Wang, Shoucong Ning, Kai Xu, Sokrates T. Pantelides, Wu Zhou, Junhao Lin
Summary: A single-frame scanning transmission electron microscopy (STEM) image can be used to reconstruct the ripple structure in monolayer MoSe2, allowing for direct visualization of the dynamics of three-dimensional ripple deformation at the atomic scale. Furthermore, the reconstructed images provide an opportunity to test the validity of the classical theory of thermal fluctuations.
Article
Multidisciplinary Sciences
Huifeng Tian, Yinhang Ma, Zhenjiang Li, Mouyang Cheng, Shoucong Ning, Erxun Han, Mingquan Xu, Peng-Fei Zhang, Kexiang Zhao, Ruijie Li, Yuting Zou, PeiChi Liao, Shulei Yu, Xiaomei Li, Jianlin Wang, Shizhuo Liu, Yifei Li, Xinyu Huang, Zhixin Yao, Dongdong Ding, Junjie Guo, Yuan Huang, Jianming Lu, Yuyan Han, Zhaosheng Wang, Zhi Gang Cheng, Junjiang Liu, Zhi Xu, Kaihui Liu, Peng Gao, Ying Jiang, Li Lin, Xiaoxu Zhao, Lifen Wang, Xuedong Bai, Wangyang Fu, Jie-Yu Wang, Maozhi Li, Ting Lei, Yanfeng Zhang, Yanglong Hou, Jian Pei, Stephen J. Pennycook, Enge Wang, Ji Chen, Wu Zhou, Lei Liu
Summary: By varying the growth temperatures, the degree of disorder and electrical conductivity of amorphous carbon films can be tuned, revealing the causal link between microstructures and macroscopic properties of amorphous materials.
Article
Chemistry, Physical
Mingquan Xu, De-Liang Bao, Aowen Li, Meng Gao, Dongqian Meng, Ang Li, Shixuan Du, Gang Su, Stephen J. Pennycook, Sokrates T. Pantelides, Wu Zhou
Summary: By improving the stability and sensitivity of the instrument, we have successfully observed the specific vibrational signals between substitutional impurities and neighboring carbon atoms in monolayer graphene. This work allows for the direct observation of local phonon modes with chemical-bonding sensitivity, providing more insights into defect-induced physics in graphene.
Article
Optics
Dongyu Yang, Wenjin Lv, Junhao Zhang, Hao Chen, Xinkai Sun, Shenzhen Lv, Xinzhe Dai, Ruichun Luo, Wu Zhou, Jisi Qiu, Yishi Shi
Summary: Low-dose imaging techniques are widely used in various fields and can protect samples from damage. However, the noise in low-dose imaging seriously affects the image quality. In this study, we propose a low-dose imaging denoising method that uses a deep neural network and a noise statistical model. The method is evaluated using simulation data and experiments on different imaging systems. The results show improved image quality in terms of signal-to-noise ratio and resolution.
Article
Engineering, Environmental
Mojtaba Qanbarzadeh, Laura DiGiacomo, Ehsan Bouteh, Eman Z. Z. Alhamdan, Marc M. M. Mason, Bo Wang, Michael S. S. Wong, Ezra L. L. Cates
Summary: Hexagonal boron nitride (hBN) has been found to be more efficient than other catalysts in photocatalytic degradation of per-/polyfluoroalkyl substances (PFAS), especially at environmentally relevant concentrations. The strong performance of hBN under realistic water conditions suggests its potential as a treatment tool for PFAS contamination.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Engineering, Chemical
Junseok Lee, Changwoo Kim, Chen Liu, Michael S. Wong, Natalie L. Capiro, Kurt D. Pennell, John D. Fortner
Summary: This study describes surface functionalized, superparamagnetic iron oxide nanocrystals (IONCs) with high sorption capacities for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). The study also presents a newly developed method for real-time interfacial observations and explores the mechanisms underlying the differential sorption behavior of PFAS compounds.
Editorial Material
Engineering, Environmental
Glen Daigger, Xiaoguang Duan, Xuchun Li, Wu-Jun Liu, Mingce Long, Kyoung-Yeol Kim, Jinxing Ma, Brooke Mayer, Rodrigo Braga Moruzzi, Bing-Jie Ni, Sigrid Peldszuz, Virender Sharma, Will Tarpeh, Yen Wah Tong, Qilin Wang, Xiangke Wang, Xuanhao Wu, Yusuke Yamauchi, Yang Yang, Dengsong Zhang, Shujuan Zhang, Yan Zhou, Wonyong Choi, Jingyun Fang, Jaehong Kim, Nancy Love, Mark Saeys, Michael Wong
ACS ES&T ENGINEERING
(2023)
Article
Chemistry, Physical
Kyung-Min Lee, Byeongseok Kim, Juwon Lee, Gihan Kwon, Kwangsuk Yoon, Hocheol Song, Kyung Hoon Min, Sang Eun Shim, Sungwon Hwang, Taejin Kim
Summary: This study investigates the effects of oxidation and reduction treatments on the NO reduction by CO over NiOx/CeO2 catalysts. The results show that the physicochemical properties of the catalysts were significantly influenced by the pretreatment temperature.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Welman C. Elias, Chelsea A. Clark, Kimberly N. Heck, Jacob H. Arredondo, Bo Wang, Andras Toro, Michael S. Wong, Laszlo Kuertib
Summary: This study reports on the photocatalytic oxidation ability of niobium oxide for aqueous-phase ammonia, which can be significantly enhanced by alkali treatment, with high selectivity.
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)