Article
Chemistry, Multidisciplinary
Ming-Liang Gao, Luyan Li, Zi-Xuan Sun, Jia-Rui Li, Hai-Long Jiang
Summary: The exposed facets of supported catalysts are crucial in catalysis, but they are usually ignored. This study demonstrates that crystal facet engineering of supports can modulate the microenvironment and electronic state of supported metal nanoparticles, leading to enhanced catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Licheng Zheng, Qi Yao, Hao Wang, Huahan Zhan, Wenwei Cai, Yinghui Zhou, Junyong Kang
Summary: The study revealed a strong correlation between Mg and O atoms in Fe-doped MgZnO, with Fe atoms causing paramagnetic coupling with surrounding oxygen atoms. The direction of initial magnetic moments has a significant impact on the band gap, providing a dynamic way to tune the gap.
Article
Chemistry, Physical
He Sun, Liwei Jiang, Yisong Zheng
Summary: This paper focuses on the electrical and magnetic properties of a thin film cleaved from the nonmagnetic half-Heusler compound CoTiSb. Through first-principles calculations, it is found that the surface of TiSb termination possesses ferrimagnetism, which can be tuned to nonmagnetism by gate-induced hole doping. This magnetic tunability provides a platform for realizing a pseudo-spin valve without hetero-interfaces.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Nan Liu, Yi Cao, Yun-Long Tang, Yin-Lian Zhu, Yu-Jia Wang, Jia-Qi Liu, Heng Zhang, Chang-Ji Li, Si-Rui Zhang, Bing Yang, Hai-Ning Li, Xiu-Liang Ma
Summary: Engineering regular crystallographic facet arrays on a large scale is useful for optimizing photophysical properties of optoelectronic materials. In this study, textured BLFO film surfaces with nanosquare arrays composed of {001} and {110} crystallographic facets were achieved using a thermal etching method. The faceted samples exhibited significantly enhanced photocurrent signals, and the {110} surface showed highly dispersive electronic structure, indicating better carrier transport.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Analytical
Licheng Zhou, Zhixiang Hu, Peng Wang, Naibo Gao, Bohui Zhai, Meng Ouyang, Guangzu Zhang, Bingbing Chen, Jingting Luo, Shenglin Jiang, Hua-Yao Li, Huan Liu
Summary: The researchers developed a novel strategy to prepare SnO2 quantum wires with different (110) facets ratio, and integrated them into SAW devices to optimize gas sensor performance. The response of the SAW gas sensor was enhanced with a frequency change of 17 kHz, and the response and recovery times were 45 s and 96 s, respectively. The mass loading effect was found to be the responsible mechanism for the superior NO2 gas sensing performances, and the (110) facet of SnO2 was found to be more beneficial for NO2 adsorption.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Biochemistry & Molecular Biology
Denisa-Maria Radulescu, Vasile-Adrian Surdu, Anton Ficai, Denisa Ficai, Alexandru-Mihai Grumezescu, Ecaterina Andronescu
Summary: In recent years, there has been a growing interest in nanotechnology, particularly in tissue engineering. Metallic nanoparticles have gained significant attention due to their antibacterial properties and ability to control the features of scaffolds. However, the environmental impact of traditional synthesis methods is a concern, leading to the development of greener and cleaner approaches.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Chang Jae Roh, Eun Kyo Ko, Yunyeong Chang, Soon Hee Park, Junsik Mun, Miyoung Kim, Tae Won Noh
Summary: Cracks have a significant impact on the physical properties of materials, including structural stability, electrical conductivity, and thermal conductivity. This study comprehensively investigates the effect of nanocracks on the physical properties of metallic SrRuO3 (SRO) thin films. It is found that the presence of nanocracks leads to inhomogeneous relaxation of strain in the SRO layer, resulting in its dc conductivity approaching zero. Additionally, an enhancement of the local optical conductivity near the nanocrack region is observed, which is attributed to the strain relaxation near the nanocracks. This research suggests that nanocracks can be utilized as promising platforms for investigating local emergent phenomena related to strain effects.
Article
Chemistry, Physical
Takaaki Tomai, Liangyu Tang, Akira Yoko, Yuki Omura, Gimyeong Seong, Tadafumi Adschiri
Summary: The study introduces a method for regenerating degraded facet-controlled nanoparticle catalysts through the dissolution-reprecipitation process and surface crystalline structure reorientation using an organic modifier. The modifier stabilizes the (100) facet, accelerates the dissolution-reprecipitation process, and promotes facet modification and catalyst regeneration.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Moritz L. Weber, Marek Wilhelm, Lei Jin, Uwe Breuer, Regina Dittmann, Rainer Waser, Olivier Guillon, Christian Lenser, Felix Gunkel
Summary: Exsolution phenomena, utilizing the instability of perovskite oxides, have been debated as efficient synthesis routes for nanostructured composite electrode materials. High-resolution transmission electron microscopy investigations have revealed spontaneous phase separation and dopant-rich features in the as-synthesized thin film material, providing insights into the subsequent exsolution process under reducing conditions. The incorporation of defect structures results in a reduced particle density at the perovskite surface, potentially trapping nanoparticles in the oxide bulk.
Article
Materials Science, Multidisciplinary
Jun Zhou, Xiaoguang Xu, Tong Yang, Jingyu He, Jianwei Chai, Lai Mun Wong, Yuan Ping Feng, Ming Yang, Lei Shen, Shijie Wang
Summary: In this work, the strain-induced multiple magnetic phase transitions in a nonmagnetic metallic 2D material ScI2 were investigated using first-principles simulations. It was found that biaxial strains can effectively increase the density of states of ScI2 and lead to phase transitions to magnetic states. These findings have important implications for the design of straintronic and spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Physics, Applied
V. Ney, B. Henne, M. de Souza, W. Jantsch, K. M. Johansen, F. Wilhelm, A. Rogalev, A. Ney
Summary: The valence state and lattice incorporation of Ni in Zn/Co-based magnetic oxides are investigated in a wide range. The structural and magnetic properties of various types of samples are analyzed. In wurtzite ZnO, Ni is found to exclusively occupy tetrahedral lattice sites with a 2+ oxidation state and behaves as an anisotropic paramagnet. In ZnCo2O4 spinel, Ni is incorporated in a 3+ oxidation state on octahedral sites and couples antiferromagnetically to Co moments. The concentration of Ni affects the magnetic properties, leading to partial magnetic compensation and ferrimagnetism. Increasing Ni concentration results in phase separation and a less defined composite magnetic oxide.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Katsunori Kubo
Summary: The investigation of the two-orbital Hubbard model on a square lattice reveals that introducing next-nearest-neighbor hopping can change the magnetic properties of the system, leading to a transition to a ferromagnetic state under certain conditions.
Article
Chemistry, Physical
B. Lakshmi, Pramod Gopinath
Summary: The modification of Magneto-optic Faraday Rotation (MFR) based on Surface Plasmon Resonance (SPR) of noble metal nanoparticles (NP) has been an exciting field of research. In this study, MFR measurements were conducted in magnetoplasmonic colloidal mixtures and a spectacular plasmonic enhancement of MFR was observed for the first time. The concentration of the participating systems had a strong influence on the Langevin-type MFR patterns, and a mutually dependent optimum concentration was required to achieve MFR enhancement.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Lijun Xiong, Yingjie Hu, Yong Yang, Qinghua Deng, Zheng Tang, Panjie Li, Jinyou Shen, Xiaoyue Zhang, Tianyu Wang, Xiaoyong Xu, Nan Yin, Yong Zhou, Wei Dong, Zhigang Zou
Summary: Boosting the replacement of traditional NH3 production with photocatalytic technology is significant for energy and environment remediation. In this study, electron pump strengthened facet engineering with organic half metallic C(CN)(3) on WO3 nanosheets and nanowires was proposed. Experimental and computational results demonstrated the superior performance of C(CN)(3) in photocatalytic N2 fixation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Shuyuan Liu, Chongze Wang, Hyunsoo Jeon, Yu Jia, Jun-Hyung Cho
Summary: The surface ferromagnetism of nonmagnetic layered electrides Hf2X leads to strongly spin-polarized topological surface states, demonstrating the entanglement between anionic electrons, 2D magnetism, and band topology.
Article
Multidisciplinary Sciences
Jieni Fu, Xiangmei Liu, Zhenduo Cui, Yufeng Zheng, Hui Jiang, Yu Zhang, Zhaoyang Li, Yanqin Liang, Shengli Zhu, Paul K. Chu, Kelvin Wai Kwok Yeung, Shuilin Wu
Summary: Probiotic-based nanoparticles can effectively treat immunocompetent primary and immunocompromised secondary bacterial pneumonia by restoring host immunity. These nanoparticles can kill common pathogens, modulate lung microbiota, and alleviate overactive immune responses. This research provides a new strategy for treating bacterial pneumonia in individuals with normal and compromised immunity.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Wenjun Liu, Tongyu Shi, Jiongtao Zhu, Zhenyu Zhang, Dong Li, Xingchen He, Xiongsheng Fan, Lingqiang Meng, Jiahong Wang, Rui He, Yongshuai Ge, Yanliang Liu, Paul K. Chu, Xue-Feng Yu
Summary: In this research, the crystal growth and defect density of MAPbI(3) wafer are improved by introducing PbI2-DMSO powders. The denser and more compact MAPbI(3) wafers with enhanced crystallinity are produced, and the fabricated direct X-ray detector shows high sensitivity and low detection limit.
Article
Nanoscience & Nanotechnology
Wei Zhu, Ya-Qin Liu, Pei Liu, Jun Cao, Ai-Guo Shen, Paul K. Chu
Summary: A smart hydrogel dressing capable of consuming blood glucose and generating antibacterial agents is designed to promote wound healing. The hydrogel degrades glucose to produce hydrogen peroxide and gluconic acid, supporting a chemodynamic reaction that kills bacteria. Additionally, it can convert near infrared light into heat for photothermal therapy. This multifunctional hydrogel has great potential in the treatment of diabetic wounds.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Nian He, Jian Li, Wenjing Li, Xiangsong Lin, Qingyun Fu, Xiang Peng, Weihong Jin, Zhentao Yu, Paul K. Chu
Summary: In this study, a new coating structure consisting of a poly(lactic acid) (PLA) coating and a (3-aminopropyl) triethoxysilane (ATS) transition layer was successfully fabricated to improve the corrosion rate and cytocompatibility of magnesium (Mg) alloys in the physiological environment, thus enhancing their potential application as bone fracture fixation devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Optics
Qiang Liu, Shimiao Wang, Haiwei Mu, Yudan Sun, Jin Zhao, Kaiyu Wang, Wei Liu, Jingwei Lv, Paul K. Chu, Chao Liu
Summary: This paper presents a surface plasmon resonance sensor composed of photonic crystal fibers (PCF-SPR) with an Au-TiO2-Au triple layer, which is theoretically analyzed using the finite element method. The sensor demonstrates enhanced resonance coupling and improved sensitivity compared to the structure with a single gold coating. The Au-TiO2-Au tri-layer structure also narrows the linewidth of the loss spectrum and enhances the figure of merit (FOM). The results provide valuable insights for designing high-performance PCF-SPR sensors.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Chemistry, Applied
Jianwei Dai, Changqing Wu, Juyi Yang, Lu Zhang, Qiangsheng Dong, Linyuan Han, Xuan Li, Jing Bai, Feng Xue, Paul K. Chu, Chenglin Chu
Summary: The deposition of poly-lactic acid (PLA) coatings on the biomedical WE43 Mg alloy and its degradation behavior and mechanism during 504 h immersion in Hanks' solution are investigated. The ion permeation phenomenon is studied and models are established to describe the ion permeation behavior through the PLA membrane and predict the protection efficiency of the PLA coating. The results enrich our understanding of ion permeation in polymeric coatings and provide insights into the development of Mg-based biomedical implants.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Multidisciplinary
Wei Liu, Chao Liu, Jianxin Wang, Jingwei Lv, Yan Lv, Lin Yang, Ni An, Zao Yi, Qiang Liu, Chunjie Hu, Paul K. Chu
Summary: A microstructured optical fibers (MOFs) biochemical sensor based on surface plasmon resonance (SPR) is proposed for simultaneous detection of analytes with different states in internal and external environments. The sensor utilizes a micro-polished dual-open-loop structure with anti-corrosive gold as the sensing layer to enhance the phase matching between fundamental mode and plasmonic mode for SPR effect. Numerical simulations reveal the better sensing properties of the even mode for ypolarized state. The sensor demonstrates high wavelength sensitivity and amplitude sensitivity in the operable infrared region, with the capability of detecting a wide range of gas and liquid analytes.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Engineering, Multidisciplinary
Jie Shen, Lei Yong, Bo Chen, Wei Qiao, Xinyun Zhai, Shuhan Wang, Yongcan Huang, Paul K. Chu, Binsheng Yu, KelvinW. K. Yeung
Summary: Research is still exploring the contribution of sophisticated regulation of bioactive factors in the microenvironment to tissue regeneration and repair. This study established magnesium oxide homogeneously- and heterogeneously-embedded biocomposites to investigate the biological impacts resulting from different aggregation structures of bioinorganic cations. The results showed that the heterogeneous structure compromised cellular adhesion and proliferation, induced pro-inflammatory responses and affected bone regeneration.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Materials Science, Biomaterials
Bo Huang, Wei Guan, Chaofeng Wang, Shuilin Wu, Zhenduo Cui, Yufeng Zheng, Zhaoyang Li, Shengli Zhu, Hui Jiang, Paul K. Chu, Xiangmei Liu
Summary: In this study, a homo-heterostructured S-Cu-FC/CuS/GO@CMC hydrogel was constructed for the first time through an in situ ionic complexation reaction. The hydrogel exhibited enhanced photocatalytic performance under 808 nm near-infrared light irradiation. The interface between S-Cu-FC/CuS and graphene oxide (GO) facilitated the fast transfer of photogenerated charges, leading to the robust sterilization ability of the hydrogel.
BIOMATERIALS SCIENCE
(2023)
Article
Optics
Qiang Liu, Jin Zhao, Yu-dan Sun, Wei Liu, Jian-xin Wang, Chao Liu, Jing-wei Lv, Shi-miao Wang, Yu Jiang, K. Chu Paul
Summary: A novel Photonic Quasi-crystal Fiber (PQF) sensor based on Surface Plasmon Resonance (SPR) has been designed for simultaneous detection of methane and hydrogen. The sensor utilizes Pd-WO3 and cryptophane E doped polysiloxane films as the sensing materials for hydrogen and methane respectively. Numerical analysis using the full-vector finite element method shows excellent sensing performance of the PQF-SPR sensor. It exhibits maximum and average hydrogen sensitivities of 0.8 nm/% and 0.65 nm/% in the concentration range of 0% to 3.5% and maximum and average methane sensitivities of 10 nm/% and 8.81 nm/% in the same concentration range. The sensor has the potential for detecting multiple gases and can be miniaturized for remote monitoring.
Meeting Abstract
Cell & Tissue Engineering
Babak Mehrjou, Dorsa Dehghan Baniani, Paul K. Chu
TISSUE ENGINEERING PART A
(2023)
Article
Chemistry, Physical
Xianwei Mo, Hao Huang, Caixia Sun, Zhenyu Zhang, Jiahong Wang, Shengyong Geng, Paul K. Chu, Xue-Feng Yu, Wenxin Liu
Summary: A novel two-dimensional sheet-like compact S-scheme Ge/GeP in-plane heterostructure with excellent photothermal effects, biocompatibility, and degradability has been designed and demonstrated. The structure can activate type I and type II photodynamic therapy effects under a single laser. Moreover, enhanced reactive oxygen species generation under longer wavelength NIR laser irradiation is achieved. The S-scheme charge transfer mechanism between Ge and GeP has been demonstrated.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
