Article
Engineering, Electrical & Electronic
Saravanan Gengan, R. M. Gnanamuthu, Sanjay Sankaranarayanan, Venumbaka Maneesh Reddy, Bhanu Chandra Marepally, Ravi Kumar Biroju
Summary: In order to improve the selectivity, linear response and stability of non-enzyme glucose detection, we fabricated a Pt nanoflower (PtNF) anchored on rGO modified GCE (PtNF-rGO/GCE) using an environmentally friendly electrochemical method. The PtNF-rGO/GCE electrode exhibited excellent glucose electrooxidation in alkaline solution, with a linear range, sensitivity, and detection limit of 3.5 mM, 335.5 mu A mM-1 cm-1, and 53 mu M (S/N = 3) respectively. The PtNF-rGO/GCE electrode not only showed selectivity but also inhibited interfering molecules such as uric acid, dopamine, and ascorbic acid. This enables broad sensitivity, low-potential operation, stability, and rapid glucose current detection, expanding the applications of non-enzymatic glucose detectors.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Multidisciplinary
Saisai Zhang, Jintao Li, Liuyang Han, Bowen Zhang, Yan Wang, Zhanying Zhang
Summary: In this paper, In2O3 nanoflowers decorated with different contents of NiO were synthesized and used as an effective sensor for detecting CO/CH4. The gas-sensing test results showed that NiO/In2O3 exhibited higher sensitivity and excellent selectivity, repeatability, and stability compared with pure In2O3. Furthermore, the sensor based on NiO/In2O3-2 could achieve dual selective monitoring of CO and CH4 at different operating temperatures.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Multidisciplinary
Qinglong Liu, Peng Yang, Wei Tan, Haowei Yu, Jiawei Ji, Cong Wu, Yandi Cai, Shaohua Xie, Fudong Liu, Song Hong, Kaili Ma, Fei Gao, Lin Dong
Summary: The size effect on nanoparticles plays a crucial role in catalysis performance. Tuning the oxygen vacancies on a metal-oxide support can help reduce the size of Pt particles, thus improving the catalysis performance of the supported catalyst. In this study, Ce-Sn solid solutions (CSO) with abundant oxygen vacancies were synthesized. After CO reduction, the catalytic CO oxidation performance of Pt/CSO was significantly better than that of Pt/CeO2. This improvement was attributed to the creation of smaller Pt clusters on CSO with more exposed active sites.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Hae-Jun Seok, Ahra Yi, Hanbin Lee, Hyo Jung Kim, Han-Ki Kim
Summary: This study compared the properties of artificially preferred (222) and (400) ITO electrodes and found that the (222) preferred ITO electrode with larger grain size of MAPbI3 active layer, lower sheet resistance, and higher optical transmittance resulted in higher power conversion efficiency for planar-type perovskite solar cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Electrochemistry
Mengmeng Yan, Dan Zhang, Xin Zhang, Yaowen Wang, Xu Zhao, Guangshe Li, Liping Li
Summary: This study reports the synthesis of oxygen vacancy-rich Li3VO4 nanoplates and investigates their electrochemical performance. The results show that the rich oxygen vacancies and two-dimensional nanoplate morphology enhance the lithium ions conduction and exhibit outstanding cycling stability. The strategy can be extended to explore other metal oxides in the two dimensions.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Lingling Jiang, Jiale Zhang, Hongying Li, Chaoqin He, Ruo Yuan, Yingqi Zhao, Jian-An Huang, Ying Zhuo, Xia Yang
Summary: In this study, a highly efficient SERS substrate Sn1-xCexO2 was synthesized by varying concentrations of Ce ions and introducing oxygen vacancies. The charge transfer pathway and strong interaction between the Sn1-xCexO2 nanoflowers (NFs) and methylene blue (MB) molecules were promoted, resulting in an enhancement factor (EF) as high as 1.80 x 106. This study provides an approach for the preparation of new SERS substrates that can be used in bioanalysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhiyao Duan, Graeme Henkelman
Summary: This study uses global optimization and constant-potential density functional theory to simulate the complete process of Pt dissolution, revealing the formation and dissolution mechanism of a two-dimensional Pt surface oxide. The findings provide a fundamental understanding of Pt dissolution under potential cycling, which is essential for the rational design of durable Pt-based cathodes for fuel cells.
Article
Chemistry, Physical
Xiaoye Du, Yanyang Qin, Bo Gao, Ke Wang, Dan Li, Yanhuai Li, Shujiang Ding, Zhongxiao Song, Yaqiong Su, Chunhui Xiao
Summary: This study demonstrated a facile and controllable method using magnetron sputtering to introduce oxygen vacancies in In2O3 films for efficient formic acid production. Density functional theory calculations indicated that the high yield of C1 products was mainly attributed to the increased surface electronic density.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jietao Jiang, Liqi Zhou, Fengfei Xu, Guanghai Chen, Xiaoyu Liu, Zhen Shen, Lijun Yang, Qiang Wu, Xizhang Wang, Zheng Hu
Summary: Pt-Sn alloyed nanoparticles immobilized on hierarchical nitrogen-doped carbon nanocages (hNCNCs) exhibit excellent glycerol oxidation reaction (GOR) performance. The Pt3Sn/hNCNC catalyst shows higher anti-poisoning capability and C-C bond cleavage ability, as well as increased dispersion and accessibility of Pt3Sn active species. This study provides a convenient approach for effective GOR electrocatalyst preparation.
Article
Chemistry, Physical
Zili Ma, Xiangdong Pei, Shaocheng Zhang, Zhenting Suo, Chuanmin Ding, Junwen Wang, Gangsen Li
Summary: Highly dispersed metal nanoparticles play a crucial role in improving catalytic activity and reducing catalyst cost. In this study, the research focused on improving the redispersion ability of Pt in the Pt/CeO2 catalyst. The introduction of Sn and reverse oxygen overflow from CeO2 crystal were found to facilitate Pt redispersion. The findings provide insights into studying the redispersion of other catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qian Zhang, Shaopeng Wang, Liwei Wang, Yilin Huang, Yinghui Wang, Kefu Yu, Liping Gao
Summary: A novel ethanol chemosensor based on In2O3@N-C nanospheres was successfully synthesized in this study, showing high sensitivity and enhanced sensing performance towards ethanol.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Na Cao, Zengxi Wei, Jie Xu, Jun Luo, Anxiang Guan, Abdullah M. Al-Enizi, Jianmin Ma, Gengfeng Zheng
Summary: The study demonstrated the successful development of a bi-metallic Sn-Ti structure in TiO2 for efficient electrocatalytic N-2 fixation, highlighting the potential of atomic-scale designing and constructing bimetallic active sites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Tianle Shi, Yong Men, Shuang Liu, Jinguo Wang, Zhuping Li, Keye Qin, Dandan Tian, Wei An, Xiaoli Pan, Lin Li
Summary: This study successfully introduced highly dispersed Pt2+ species into three different morphologies of In2O3 supports, and found that the exposed crystal facets greatly affect the dispersion of active Pt2+ species and the number of oxygen vacancies, which closely correlates with the catalytic performance. Pt/In2O3 primarily exposed (211) facet showed higher catalytic activity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Analytical
Hyo Yong Kim, Jayeon Song, Hyun Gyu Park, Taejoon Kang
Summary: The development of ultrasensitive, selective, simple, and rapid microRNA (miRNA) detection methods is crucial for diagnosing human diseases. In this study, a label and wash-free electrochemical miRNA detection method with zeptomolar sensitivity was described. This method relies on the reduction of Cu2+ induced by target miRNA and the consequential changes in electrochemical signals. It successfully identified target miRNA with a detection limit of 33.2 zM based on this principle. The developed method showed potential applicability as a label and wash-free point-of-care testing system.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Chemistry, Applied
Jingsen Bai, Liting Yang, Zhao Jin, Junjie Ge, Wei Xing
Summary: Proton exchange membrane fuel cells (PEMFCs) are ideal energy-conversion devices with high theoretical energy efficiency and environmentally friendly characteristics. However, the sluggish oxygen reduction reaction (ORR) kinetics decrease fuel cell efficiency. Pt-based intermetallic nanocrystals exhibit excellent activity and stability for the ORR, offering great potential for improving fuel cell performance.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Analytical
Junji Li, Zi-Xuan Liu, Yi-Xuan Li, Guofang Shu, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: In this study, a tailored metal-organic framework transducer material Cu BDC(NH2)@2-MI was synthesized using 2-methylimidazole as a competitive ligand, which allowed for the modulation of its morphology and catalytic activity. The 2-MI-doped MOF exhibited well-tuned morphology and showed efficient performance in electrochemical H2O2 reduction. This novel design could potentially enable the utilization of proprietary MOFs materials beyond the laboratory.
Article
Chemistry, Analytical
Haobo Sun, Jingliang Liu, Yunliang Qiu, Jinming Kong, Xueji Zhang
Summary: A highly sensitive and selective biosensor for methamphetamine detection was designed using aptamer recognition probe and ATRP signal amplification. The sensor could detect METH as low as 17 fM, with a recovery rate of 93% in serum and urine. This approach shows promising potential for sensitive detection of low concentration toxicants.
Article
Chemistry, Analytical
Jingyu Xiao, Chuan Fan, Tailin Xu, Lei Su, Xueji Zhang
Summary: In this study, a simple, wearable, noninvasive, and portable metal-organic framework (MOF)-based electrochemical sensor was developed for monitoring the concentration of levodopa in sweat, which can serve as a proxy for the levels of L-dopa in the body. The sensor showed a wide linear response range, low detection limit, good selectivity, high sensitivity, and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Chemistry, Analytical
Chenyu Ren, Tong Shu, Xin Du, Linzhi Yang, Lei Su, Xueji Zhang
Summary: This article reviews the mechanisms, structures and properties of nanoclusters formed by coinage metals, such as Cu, Ag and Au, and focuses on the assembly and analysis processes of nanocluster sensor platforms and provides examples of applications.
Article
Chemistry, Analytical
Yan Huang, Yiyi Zhang, Wenbin Hao, Huiting Lu, Haifeng Dong, Xueji Zhang
Summary: To achieve fast, convenient, and highly sensitive detection of microRNA (miRNA), palladium-gold (Pd-Au) bimetallic nanoplates with high photothermal effect were synthesized and combined with locked nucleic acid (LNA) detection probe to develop a photothermal lateral flow locked nucleic acid biosensor (P-LFLNAB) for miRNA detection. The P-LFLNAB enables sensitive and selective miRNA-21 detection with detection limit down to 0.094 pM using a smartphone with external thermal imager, which is 639.5 times lower than that of the conventional gold nanoparticles based colorimetric lateral flow biosensor and the most sensitive enzyme-free lateral flow biosensor for miRNA detection. Besides, the P-LFLNAB achieved single-base mismatch discrimination and can quantify signals in various cell lysates. This highly sensitive, selective and portable P-LFLNAB with smartphone readout has great potential in point-of-care test of miRNAs-related biomedical application.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Xiangdan Meng, Sirong Sun, Chenchen Gong, Junyan Yang, Zhou Yang, Xueji Zhang, Haifeng Dong
Summary: In this study, we report the design of a Ti-based metal-organic framework (MIL) and silver nanoparticles (Ag NPs) heterostructure, MIL@Ag. It is found that the introduction of Ag NPs significantly improves the electron transfer efficiency and O2 adsorption capacity of MIL, leading to enhanced reactive oxygen species (ROS) generation for sonodynamic therapy (SDT). Under ultrasound irradiation, the activated electrons and holes from MIL and Ag NPs produce superoxide radicals and hydroxyl radicals, respectively, improving the therapeutic efficiency of SDT. MIL@Ag-PEG-mediated SDT demonstrates effective cancer cell killing and bacterial infection eradication. Thus, MIL@Ag-PEG provides a promising strategy for enhancing SDT performance through rational heterostructure design of sonosensitizers.
Article
Chemistry, Analytical
Shuangshuang Yang, Jinya Du, Menglian Wei, Yan Huang, Yufan Zhang, Yeyu Wang, Jinze Li, Wei Wei, Yuchun Qiao, Haifeng Dong, Xueji Zhang
Summary: Rapid, simple, sensitive and reliable approaches for quantifying biogenic amines in food samples are essential for food safety. Here, the authors reported a Fe3O4@Au nanoparticles based multimodal readout LFIA for rapid quantification of putrescine and histamine. The assay showed high sensitivity and could be easily expanded to detect other biogenic amines.
ANALYTICA CHIMICA ACTA
(2023)
Article
Biophysics
Tingting Wu, Xushun Liu, Hanjun Chen, Ying Liu, Yu Cao
Summary: This study proposes an in situ exosomal miRNA sensing biochip based on multi-branched localized catalytic hairpin assembly (MLCHA) and photonic crystals (PCs). The MLCHA probes can penetrate exosomes nondestructively and generate amplified fluorescence signals upon recognition of the target miRNA. The fluorescence signal is further enhanced by PCs to improve sensitivity. The developed biosensor not only detects exosomal miRNA in a concentration-dependent manner but also distinguishes samples from cancer and healthy states, showing potential for non-invasive clinical diagnostics.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Biophysics
Mengyun Zhou, Yong Luo, Lirong Wang, Chuan Fan, Tailin Xu, Xueji Zhang
Summary: The outbreak of COVID-19 has posed a great challenge to global health systems. A rapid and sensitive POCT diagnostic platform for SARS-CoV-2 that can be deployed on-site is crucial in containing the epidemic. A portable microdroplet detection platform with temperature control and micro-stirring has been developed, enabling high-throughput and ultrafast COVID-19 diagnosis. The platform, utilizing a PN junction as the temperature controller and incorporating an ultrasonic micro-stirring unit, shows good linearity and low LOD, providing results in a short time. This integrated platform offers a promising tool for point-of-care diagnosis of COVID-19 in resource-limited settings.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Engineering, Environmental
Kun Yu, Mengjie Li, Huining Chai, Qian Liu, Xin Hai, Mingwei Tian, Lijun Qu, Tailin Xu, Guangyao Zhang, Xueji Zhang
Summary: This study presents a portable colorimetric and electrochemical dual-mode sensor based on MOF-818 nanozyme for the detection of cellular secreted H2O2 and H2S. The sensor enables accurate detection of H2O2 and H2S through colorimetric and electrochemical methods. By combining with a smartphone and miniature electrochemical analyzer, it allows for in situ detection of H2O2 and H2S released from live cells, showcasing potential applications in various fields.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Tingyi Yan, Guangyao Zhang, Kun Yu, Huining Chai, Mingwei Tian, Lijun Qu, Haifeng Dong, Xueji Zhang
Summary: Maintaining normal levels of vitamin C is crucial for a healthy immune system. The development of real-time non-invasive wearable sensors for monitoring vitamin C in sweat shows promise in personalized health management. In this study, a smartphone light-driven enzyme-free wearable photoelectrochemical sensor was presented for precise monitoring of sweat vitamin C.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Shaoqiong Feng, Hanjun Chen, Ziao Hu, Tingting Wu, Zhihong Liu
Summary: A distance-based biosensor using hydrogel, CRISPR/Cas12a and target-triggered strand displacement amplification (SDA) reaction is proposed for the visual, quantitative and sensitive measurement of microRNA. The biosensor can detect the concentration of target microRNA visually without the assistance of instruments, and it shows high sensitivity and specificity, making it suitable for point-of-care applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Ying Liu, Xin Wang, Hanjun Chen, Tingting Wu, Yu Cao, Zhihong Liu
Summary: Chemodynamic therapy (CDT) is a promising strategy for cancer treatment, but its efficiency is limited by insufficient intracellular H2O2 level. This study presents a method to enhance CDT by silencing the CAT gene to accumulate H2O2 in tumor cells. Cu-siRNA nanocomposites are fabricated and modified with HA for active tumor targeting. Cu+ is generated by reduction of released Cu2+ by GSH, which then catalyzes H2O2 to produce toxic hydroxyl radicals to kill tumor cells. CAT siRNA efficiently inhibits H2O2 consumption, leading to H2O2 accumulation. Cu-siRNA@ HA exhibits good biocompatibility and therapeutic efficiency, offering a new way to supply H2O2 in CDT with potential for clinical application.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Yaodong Hu, Shuaibing Yu, Nan Ma, Jinming Kong, Xueji Zhang
Summary: In this study, a Rose Bengal-Mediated photoinduced atom transfer radical polymerization (photo-ATRP) method was used to achieve highly sensitive detection of target DNA (tDNA), which is of great significance in the field of early disease screening.
Review
Materials Science, Multidisciplinary
Xuhua Liu, Jinlei Miao, Qiang Fan, Wenxiao Zhang, Xingwei Zuo, Mingwei Tian, Shifeng Zhu, Xueji Zhang, Lijun Qu
Summary: With the rapid development of smart products, flexible and stretchable smart wearable electronic devices are considered as pioneers in the new generation of flexible electronic devices. Flexible strain sensors, known for their good flexibility, high sensitivity, high repeatability, and potential in personal healthcare and motion detection, have been widely studied. Unlike traditional bulky sensors, these lightweight portable devices with excellent mechanical and electrical performance meet personalized needs and are becoming more popular.
ADVANCED FIBER MATERIALS
(2022)
