Article
Chemistry, Applied
Yongbo Yu, Qing Wang, Jianfeng Dai, Yirong Li, Can Wang
Summary: In this study, the MgCo2O4@Mn2O3 coaxial hollow core-shell structure (Pipe-in-Pipe) was synthesized using electrospinning technology. The morphology of MgCo2O4 was controlled by adjusting the annealing temperature, and the coaxially hollow core-shell structure was prepared based on this. This method achieved the synthesis of MgCo2O4@Mn2O3 coaxial hollow core-shell structure with excellent porosity and specific surface area in one step. The study not only investigated the influence of annealing temperature, but also tested the performance of the coaxial hollow core-shell structure in a supercapacitor.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaobin Xie, Marijn A. van Huis, Alfons van Blaaderen
Summary: A new method for synthesizing Au NP@mSiO(2) yolk-shell particles with tunable size and hollow space is proposed, the structure can be manipulated from core-shell to yolk-shell by varying reaction parameters, and the release of Au nanotriangle cores in yolk-shell particles was demonstrated through liquid-cell transmission electron microscopy.
Article
Nanoscience & Nanotechnology
Nianqiao Qin, An Pan, Jun Yuan, Fei Ke, Xiaoyan Wu, Jing Zhu, Jianqiang Liu, Junfa Zhu
Summary: Hollow core-shell catalytic nanoreactors featuring bimetallic porous Zn/Ni-MOF-2 shell and tiny Au nanoparticle core were successfully constructed through a rare crystal-structure transformation strategy. These nanoreactors exhibit outstanding multifunctional catalysis for a broad range of alcohol oxidation under the green oxidant environment, showing excellent recyclability in selective alcohol oxidation. These findings may provide a promising platform for the general construction of various metal-organic framework-based hollow core-shell nanostructures and further highly augmented catalytic applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Dong Jae Yu, Wansik Oum, Ali Mirzaei, Ka Yoon Shin, Eun Bi Kim, Hyeong Min Kim, Sang Sub Kim, Hyoun Woo Kim
Summary: We synthesized pristine SnO2 nanoparticles and Au@SnO2 core-shell nanocomposites for xylene gas sensing. The Au@SnO2 core-shell nanocomposites showed better response and selectivity compared to the pristine SnO2 nanoparticles, demonstrating the promising effects of the Au@SnO2 core-shell structure for xylene sensing.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Dehong Bai, Ziyu Xue, Peiqing Guo, Mingzhu Qiu, Xuefang Lei, Yujin Li, Chengjie Ma, Dongxia Zhang, Xibin Zhou
Summary: A colorimetric method for the determination of Hg2+ has been proposed in this study, based on the aggregation of Glutathione-modified gold nanoflowers (GSH-Au NFs) induced by the analyte and their activated peroxidase-mimicking activity. The method shows a wide linear range and a low detection limit, making it highly sensitive for the detection of Hg2+ and of great value in environmental monitoring.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zhiwei Qiu, Yitong Xue, Jiyong Li, Yunzhi Zhang, Xinyi Liang, Congying Wen, Houjian Gong, Jingbin Zeng
Summary: Ammonia is an important component of the atmosphere with environmental balancing role, but it is also a toxic gas that can damage respiratory system and mucous membranes. Researchers have developed an optical probe for detecting ammonia concentration, showing potential for environmental monitoring applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Analytical
Naizhi Yao, Xiaoting Li, Yonghui Tian, Zhijun Huang, Yixiang Duan
Summary: By using core-shell Au@PdNPs with high peroxidase-like activity, the colorimetric enhanced LFIA improved the sensitivity and detection limit for low-concentration targets. The use of a high-viscosity chromogenic agent also solved the problem of observation of testing results. This improved LFIA method has potential in clinical diagnostics and should be further promoted.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Applied
Qin Zhang, Luying He, Karuppasamy Kohila Rani, Deyin Wu, Jiaojiao Han, Yanhong Chen, Wenjin Su
Summary: The rapid colorimetric detection of neomycin sulfate was achieved using polyvinyl pyrrolidone-coated gold nanoparticles (Au@PVP NPs) solution. The method showed excellent performance with high sensitivity, low cost, and satisfaction recovery in a wide linear range for neomycin sulfate determination.
Article
Nanoscience & Nanotechnology
Pei-Yu Wang, Wen-Jyng Wang, Wei-Peng Li
Summary: In this study, Au@Cu2O core-shell nanocatalysts with excellent peroxidase-like activity were prepared, and serine was successfully coordinated on the Cu2O shell. The serine-modified Au@Cu2O nanoparticles with exposed 1 degree amine and hydroxyl groups showed specific intermolecular pairings with beta-hydroxybutyric acid and volatile acetone. The click-chemistries between serine-beta HBA and serine-acetone were verified by spectroscopic analyses. This study demonstrates the concept of alternative click-chemistry-promoted colorimetric analysis and provides a new avenue for the development of advanced biosensors for small molecule detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
A. Dutta, B. Pihuleac, Y. Chen, C. Zong, L. Dal Negro, C. Yang
Summary: The use of CSS plasmonic nanoparticles has shown significant enhancement in the photocatalytic performance of PEC photoanodes using hematite as a testing system. The optimized CSS NPs have demonstrated double resonance peaks and spatially uniform electric field distributions, resulting in improved photocurrent density and potential for increasing carrier generation in hematite photoelectrocatalytic systems.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Wei Wei, Tingting Bai, Ruining Fu, Litao Sun, Wen Wang, Meng Dong, Lei Chen, Zhirui Guo, Feng Xu
Summary: Controlling the growth, structure and morphology of core-shell nanoparticles (NPs) is significant for catalytic applications and can be achieved by adding chemical additives to the synthesis reaction mixture. This study using in situ liquid cell transmission electron microscopy (TEM) reveals the overgrowth mechanisms of Ag on Au nanobipyramids in AgNO3 aqueous solution with ascorbic acid as the reducing agent, helping to understand the dynamics of the coalescence process of Ag NCs upon addition of PVP. This research is valuable for synthesizing NPs with greater design flexibility and expanding their various technological applications.
Article
Chemistry, Multidisciplinary
Benjamin Levitas, Zhongyi Liu, Spencer Piligian, Katsuyoshi Kakinuma, Srikanth Gopalan
Summary: This study successfully synthesized core-shell perovskite materials via molten salt synthesis, demonstrating for the first time the rapid preparation of two-phase perovskite composites in a molten salt. By adjusting various parameters, the characteristics of the core-shell composites can be controlled to achieve higher core-shell yield and uniform shell deposition.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Ruimeng Sun, Ruijuan Lv, Yang Zhang, Ting Du, Yuhan Li, Lixia Chen, Yanfei Qi
Summary: In this study, core-shell Cu/Au nanoparticles were synthesized and shown to possess peroxidase activity for the detection of H2O2 and glucose. The method exhibits a good detection range and detection limit, making it highly promising for various applications.
Article
Chemistry, Analytical
Yong Jin Ahn, Byung-Ki Ahn, Sung-Woong Kang, Gi-Ja Lee
Summary: A highly sensitive and facile colorimetric assay using peroxidase-like activity of silver core/gold shell nanoplates for detecting biogenic gaseous H2S is introduced. The assay showed a linear relationship between the change in absorbance at 650 nm and the H2S concentration, with a limit of detection of 263 nM and a relative standard deviation of 4.4%. This assay has the potential to be applied in the study of H2S signaling in bacterial physiology and the diagnosis of oral diseases.
Article
Chemistry, Analytical
Lihong Su, Huilan Hu, Yanli Tian, Conghui Jia, Lulu Wang, Han Zhang, Jianlong Wang, Daohong Zhang
Summary: A dual-model colorimetric/SERS lateral flow immunoassay based on a metallic core-shell Au/Au nanostar was constructed for ultrasensitive determination of clenbuterol. The method achieved visual detection of clenbuterol at 5 ng/mL and quantitative detection as low as 0.05 ng/mL, significantly lower than traditional AuNPs-based immunoassays.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jie Xing, Qiuyu Gong, Ruifen Zou, Junlie Yao, Lingchao Xiang, Aiguo Wu
Summary: Despite the rapid development of fluorescence detection modalities for disease diagnosis, there is still immense pressure for novel fluorescent molecules and probes to transform before their clinic application. Remarkably, fluorescent probes based on traditional fluorescent dyes are expected to expedite this transformation process. In this study, methylene blue is utilized to intricately design the GSH responsive probe MB-SS-CPT. The synthesized MB-SS-CPT provides significant optical advantages for GSH detection in vitro, cell fluorescence imaging, in vivo imaging, and antitumor therapy.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Linzi Chen, Zhenqi Jiang, Lifei Yang, Ye Fang, Shuwei Lu, Ozioma U. U. Akakuru, Shuaishuai Huang, Juan Li, Suya Ma, Aiguo Wu
Summary: HPDA/Zn is a novel ultrasound contrast agent that can stabilize plaques by reducing CREB protein expression and decreasing inflammatory factor secretion.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Automation & Control Systems
Wen-Nian Qi, Ai-Guo Wu, Jing Huang, Rui-Qi Dong
Summary: This paper addresses the problem of attitude consensus control for multiple rigid spacecraft under a fixed interaction network, where only a subset of followers can obtain the leader's state information. A group of distributed finite-time observers is constructed for each follower to estimate the leader's attitude and angular velocity. Fast non-singular terminal sliding mode attitude controllers are proposed for followers based on the observed information. Rigorous proofs are presented to demonstrate the finite-time attitude consensus performance of the closed-loop multiple rigid spacecraft systems under the proposed consensus protocol. Numerical simulations are provided to illustrate the performance of the proposed attitude consensus protocol.
IET CONTROL THEORY AND APPLICATIONS
(2023)
Article
Medicine, General & Internal
Jerry L. Mothershead, Zygmunt F. Dembek, Steven J. Hadeed, Kierstyn T. Schwartz-Watjen, Katherine M. Broadway, Bersabeh Tigabu, Ashley J. Woodards, Akeisha N. Owens, Tesema Chekol, Aiguo Wu
Summary: This study reviewed various travel guidance documents to create a universal Travel Risk Assessment Questionnaire (TRAQ) for assessing COVID-19 travel risks. The TRAQ helps travelers assess their likelihood of COVID-19 exposure and aims to reduce the risk of contracting and transmitting the virus during travel.
Article
Chemistry, Physical
Wenhao Lv, Chen Xu, Hao Wu, Yangyang Zhu, Ozioma Udochukwu Akakuru, Hui Du, Fang Nie, Aiguo Wu, Juan Li
Summary: By designing gold-based nanocarriers, delivering STAT6siRNA into macrophages, the polarization of tumor-associated macrophages was successfully inhibited, preventing the invasion and metastasis of lung cancer. It also provided efficient photothermal therapy and contrast-enhanced ultrasound imaging for real-time monitoring and elimination of tumor tissues.
Article
Environmental Sciences
Yuenan Zhang, Yujie Zhang, Aiguo Wu
Summary: This study investigates the remediation effect and mechanism of cadmium (Cd) in weakly alkaline soil using zeolite, diatomite, and sodium bentonite as the main components, supplemented by calcium dihydrogen phosphate and fulvic acid. The results show that the concentration of Cd in rhizosphere and non-rhizosphere soil decreases, and there is a reduction in Cd concentration in wheat grains.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Editorial Material
Engineering, Electrical & Electronic
Haiwei Zhang, Aiguo Wu
Summary: This article comments on a published paper by Zhang and Wu (2019) on the topic of common-mode noise reduction by parasitic capacitance cancellation in a three-phase inverter. The paper demonstrates how a three-terminal electromagnetic interference (EMI) filter can effectively reduce EMI noise on the output side. The concept of parasitic capacitance cancellation is not new, and previous works by Wang and Lee (2007, 2010), Neugebauer and Perreault (2006), and Piboonwattanakit and Khan-Ngern (2008) should be cited.
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
(2023)
Article
Automation & Control Systems
Wen-Nian Qi, Ai-Guo Wu, Rui-Qi Dong
Summary: This paper proposes an adaptive neural network-based distributed protocol for fixed-time attitude consensus control of a group of rigid spacecraft in the presence of inertia uncertainties and external disturbances.
INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING
(2023)
Article
Biochemistry & Molecular Biology
Fangfang Wang, Hao Zhang, Yufeng Sun, Shengwen Wang, Li Zhang, Aiguo Wu, Yujie Zhang
Summary: In recent years, there has been a serious water pollution problem caused by frequent oil spills and increasing industrial wastewater discharge. To address this issue, the development of materials that can simultaneously treat oil, microbial, and dye pollutants is crucial for safe treatment and recovery of wastewater. In this study, a modified calcium alginate-based aerogel membrane was prepared and shown to have super hydrophilic and underwater super-oleophobic properties. The membrane could effectively separate oil-water emulsions under gravity with a separation efficiency of over 99%. Additionally, the membrane could remove bacteria and dye pollutants from water by filtration, achieving removal rates of 100% and 99% respectively. The filtration results of mixed wastewater demonstrated that the CTW membrane could realize one-step separation of oil, bacteria, and dye, and also had the potential for recycling and further application.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Automation & Control Systems
Rui-Qi Dong, Ryozo Nagamune, Ai-Guo Wu
Summary: In this article, a new control method using a dynamic parameter and an attitude maneuver planning scheme is proposed for flexible spacecraft to achieve anti-unwinding attitude maneuver control and vibration suppression. The attitude maneuver path is planned by the proposed scheme with four input impulses satisfying certain conditions to suppress the flexible modal vibration. A robust attitude maneuver controller with a dynamic parameter is proposed to track the planned reference attitude maneuver path without unwinding, based on a novel switching function. The simulation results demonstrate the robustness and anti-unwinding performance of the proposed attitude control scheme, and the ability to suppress the flexible vibration by tracking the planned attitude maneuver path.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Article
Nanoscience & Nanotechnology
Xiaoxia Wu, Dinghu Zhang, Ting Pan, Jianwei Li, Yujiao Xie, Chenguang Zhang, Chunshu Pan, Zhewei Zhang, Jie Lin, Aiguo Wu, Guoliang Shao
Summary: This study utilized in situ dynamic covalent chemistry to control the co-self-assembly of an anticancer drug and ultrasmall iron oxide nanoparticles. The dynamic covalent self-assembly strategy allowed for concentration regulation of the different components, resulting in a stable codelivery nanosystem with intelligent drug release. Furthermore, the codelivery system conjugated with a targeting molecule exhibited significant biocompatibility and enhanced dual-modal MRI abilities.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Mihaela Asaftei, Massimiliano Lucidi, Cristina Cirtoaje, Alina-Maria Holban, Costas A. A. Charitidis, Fang Yang, Aiguo Wu, George A. A. Stanciu, Ozge Saglam, Veronica Lazar, Paolo Visca, Stefan G. G. Stanciu
Summary: The fast and global spread of bacterial resistance to antibiotics has led to an urgent need for alternative antibacterial agents. Recent studies have shown that nanomaterials, particularly carbon nanotubes (CNTs), have the potential to be used as antimicrobial agents. This mini-review surveys recent progress on the antibacterial effects of CNTs and examines the proposed mechanisms of action, with a focus on their activity against Staphylococcus aureus and Escherichia coli.
Article
Chemistry, Analytical
Gul Awiaz, Xiaoxia Wu, Chenguang Zhang, Ting Pan, Xiawei Xu, Jie Lin, Aiguo Wu
Summary: In this work, Au@Ag-Au core@double shell bimetallic nanoparticles were successfully designed and prepared, showing uniform size and shape. The Au@Ag-Au NPs exhibited high SERS activity under 532 nm illumination due to the bathochromic shift of surface plasmon resonance peak. The SERS bioprobe based on Au@Ag-Au NPs effectively recognized tumor cells and could play an important role in cancer diagnosis.
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Hao Peng, Guiping Ren, Norbert Hampp, Aiguo Wu, Fang Yang
Summary: Iron-based nanoparticles with rare-earth elements are promising in the field of biomedical applications, specifically in cancer diagnosis and treatment. The combination of the attractive properties of Fe-based NPs and the magnetic or fluorescent properties of rare-earth elements provides a multimodal nanomaterial that can improve the accuracy of tumor diagnosis and facilitate efficient treatment. This manuscript provides an overview of the synthetic routes and current biomedical application of these nanocomposites.
Review
Biochemical Research Methods
Yujiao Xie, Xiawei Xu, Jing Wang, Jie Lin, Yong Ren, Aiguo Wu
Summary: Microfluidic-based lab-on-a-chip technology has rapidly evolved in the past decade, serving as a promising platform for microanalysis in various biomedical applications. Microfluidic chips have been successfully used in cancer diagnosis and monitoring by effectively separating and analyzing cancer-derived substances. However, conventional methods are time-consuming and inefficient, while microfluidic platforms simplify the separation and enrichment process and significantly improve detection efficiency. This review paper provides a comprehensive overview of the design, fabrication, separation strategies, on-chip detection technologies, and novel applications of microfluidic chips in liquid biopsy.
