Article
Engineering, Electrical & Electronic
N. Dogan, G. Caliskan, M. Irfan
Summary: In this study, the effects of capping agents on the structural morphology and magnetic behaviors of ZnFe2O4 nanoparticles for magnetic particle imaging (MPI) applications were evaluated. It was found that capping agents such as polyacrylic acid, lauric acid, and malic acid played a significant role in controlling the size of the nanoparticles. The ZnFe2O4@PAA samples showed the shortest effective relaxation time (2.68 mu s) and excellent spatial resolution (FWHM, 5.89 mT) in MPI applications, as determined by a custom-designed magnetic particle relaxometer (MPR) at 9.9 kHz.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Fathyah Whba, Faizal Mohamed, Mohd Idzat Idris, Mohd Syukri Yahya
Summary: This study focused on modifying cellulose nanocrystals to create a biocompatible and stable coating agent for a dual-contrast composite material. The modified cellulose nanocrystals showed excellent colloidal stability and a highly negative surface charge. They also exhibited small particle size and changed surface morphology. In addition, they demonstrated good biocompatibility and the potential to serve as a dual-contrast agent for MRI techniques and other biomedical applications.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Amira Cherif, Mohamed Saidani, Imen Dakhlaoui, Jean Marc Greneche, Najeh Thabet Mliki
Summary: Co spinel ferrite nanoparticles were successfully prepared using a solvothermal route, and their structure, morphology, and electrical properties were studied. The dielectric behavior was found to be influenced by grain boundaries, with an unusual AC conductivity response. The compound was classified as an ultra-low-k dielectric material.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Biochemical Research Methods
Linhua Yi, Baichun Wang, Quanshou Feng, Yinghua Yan, Chuan-Fan Ding, Haijiao Mao
Summary: In this study, a super-hydrophilic mesoporous silica magnetic nanosphere was synthesized for the quick and accurate detection of glycopeptides from human serum exosomes. The nanosphere demonstrated outstanding enrichment capability, high sensitivity, good size exclusion effect, stable reusability, and excellent recovery rate. After enrichment, 156 glycopeptides assigned to 64 proteins derived from human serum exosomes were successfully identified, demonstrating the great potential of the nanosphere for large-scale serum exosome glycoproteome research.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Dongdong Zhu, Huaiyu Zhang, Juhong Miao, Fangxin Hu, Liang Wang, Yujia Tang, Man Qiao, Chunxian Guo
Summary: The urea oxidation reaction (UOR) is a crucial half-reaction for urea-assisted water splitting, direct urea fuel cells, and electrochemical degradation of urea-containing wastewater. This perspective provides insights into the reaction mechanism of UOR, and discusses strategies for designing efficient UOR electrocatalysts. The remaining challenges and future opportunities in this emerging field are also outlined.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Xiaoshuai Wu, Jing Liu, Chunxian Guo, Zhuan Zhuan Shi, Zhuo Zou, Wei Sun, Chang Ming Li
Summary: This study introduces a new living-cell-based supercapacitor with significantly higher specific capacitance and energy density compared to all reported biosupercapacitors. The concept involves creating micro-supercapacitors by serially connecting double layers within a living cell and parallelizing millions of individual cells, leading to ultrahigh supercapacitance. This innovation holds promise for developing highly biocompatible high-power devices for future energy sources in artificial skin and implant applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Changhong Wang, Zhengyang Liu, Liuqi Dong, Feng Du, Jingsha Li, Chongjun Chen, Ruguang Ma, Changming Li, Chunxian Guo
Summary: In this study, a bimetallic CuCo nanocrystal with 2.5 at.% Co to Cu was developed, which exhibited 100% nitrate conversion rate and 95% NH3 Faradaic efficiency in neutral electrolyte. The high catalytic activity can be attributed to strong NO3- absorption and suppression of hydrogen evolution reaction.
JOURNAL OF POWER SOURCES
(2023)
Review
Chemistry, Analytical
Jianyu Yang, Shasha Lu, Bo Chen, Fangxin Hu, Changming Li, Chunxian Guo
Summary: Microbial infection poses challenges for public health, and efficient microorganism detection is crucial. However, simultaneous identification of microorganisms is difficult due to the similarities in their surface microenvironments. Machine learning assisted optical sensor arrays, based on nanomaterials, are emerging as promising analysis techniques for microorganism discrimination with high sensitivity, time-saving, and easy operation. This article discusses recent developments in machine learning assisted optical sensor arrays for microorganism identification. It covers five types of optical nanosensor arrays and eight commonly used machine learning algorithms in array-based sensors, while providing an overview of the statistical analysis principles involved. The current challenges and future perspectives are also outlined.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhuanzhuan Shi, Fang Shi, Yunpeng Li, Xiaoshuai Wu, Zhengyang Liu, Liang Liu, Qianqian Fu, Chang Ming Li, Chunxian Guo
Summary: Cell activities heavily rely on signal molecules, especially reactive oxygen species like superoxide anion (O2·-) and hydrogen peroxide (H2O2), which play important roles in regulating processes such as apoptosis and oxidative stress. Simultaneous qualification of O2·- and H2O2 is significant but challenging, especially in live-cell assays with complex environments. In this study, a bifunctional sensing material, Co/N-doped CNRs, was designed and used to fabricate an electrochemical sensing chip for rapid and sensitive detection of cell-released O2·- and H2O2. The Co/N-doped CNRs exhibited unique properties, including a porous structure for increased reaction surface area and coordinating Co nanoparticles for rich active sites. The sensing chip showed fast response time, low detection limit, and high sensitivity, making it one of the best bifunctional nanozymes reported.
Article
Chemistry, Multidisciplinary
Fang Xin Hu, Guangxuan Hu, Dong Ping Wang, Xinxuan Duan, Linrun Feng, Bo Chen, Yuhang Liu, Jie Ding, Chunxian Guo, Hong Bin Yang
Summary: This study developed an integrated nanoelectronic system for real-time sensing of nitric oxide (NO), which is highly important in various physiological functions. The system consists of a cobalt single atom nanozyme (Co-SAE) chip array sensor and an electronic signal processing module (INDCo-SAE) for both in vitro and in vivo multichannel quantification of NO in normal and tumor-bearing mice. The Co-SAE showed high atomic utilization and catalytic activity, allowing for a wide linear range of NO detection and low detection limit. The study also investigated the NO-producing behaviors of different organs in mice and demonstrated the potential of the integrated system in molecular analysis.
Article
Chemistry, Analytical
Ning Zhang, Mengqi Tong, Zhuanzhuan Shi, Jianyu Yang, Bo Chen, Changming Li, Chunxian Guo
Summary: A unique carbon-based material comprising Pt-CuO nanocrystal interfacially anchored on functionalized carbon nanofiber (Pt-CuO@FCNF) was developed for ultrasensitive detection of cell-released H2O2 using a screen printed electrode (SPE). Pt-CuO@FCNF showed a wide linear response range, low detection limit, fast response time, and good selectivity.
ANALYTICA CHIMICA ACTA
(2023)
Review
Materials Science, Multidisciplinary
Chun-Jie Li, Guang-Cun Shan, Chun-Xian Guo, Ru-Guang Ma
Summary: In this review, the recent advances in Pd-based ORR electrocatalysts are summarized and the relationship between nanostructure and catalytic performance is analyzed. The ORR mechanism and performance indicators in both alkaline and acidic media are introduced, followed by the synthetic methods for Pd-based nanoparticles. The design strategies of efficient Pd-based ORR catalysts are emphasized, considering the composition, crystal phase, morphology, and support effects. The review concludes with possible opportunities and future prospects for Pd-based nanomaterials in ORR.
Article
Chemistry, Multidisciplinary
Ge Li, Yan Zheng, Guangxuan Hu, Bo Chen, Yu Gu, Jianyu Yang, Hongbin Yang, Fangxin Hu, Changming Li, Chunxian Guo
Summary: A photoelectrochemical sensor (PEC) was designed and constructed for in vitro detection of H2O2 using atomically dispersed iron active sites (Hemin) modified graphdiyne (Fe-GDY) as the photoelectrode. The sensor exhibits high sensitivity, selectivity, and stability, and can quantify H2O2 released from different organs within a linear range of 0.1 to 48,160 μm. This PEC sensor provides a promising approach for molecular sensing and disease diagnosis at the organ level.
Article
Energy & Fuels
Zixuan Tan, Feng Du, Mengqi Tong, Jundie Hu, Ning Zhang, Shunyuan Huang, Chunxian Guo
Summary: In this study, a heterostructured CoS2/MoS2 electrocatalyst is developed to improve the performance of NO3-RR by modifying the electronic structure and enhancing the cooperation between components. It achieves high-efficiency ammonia synthesis.
Article
Chemistry, Analytical
Mengqi Tong, Ning Zhang, Zixuan Tan, Lili Chi, Kaiwen Zhang, Bo Chen, Fangxin Hu, Chunxian Guo
Summary: Bi2WO6 nanocrystal with rich oxygen vacancy (Bi2WO6-V) is used to construct a photoelectrochemical (PEC) sensor for fast and wide-range qualification of hydrogen peroxide (H2O2). The PEC sensor has a detection limit of 0.5 μM for H2O2 under visible light irradiation, which is 10 times higher than without light. The sensor can effectively absorb visible light to reduce H2O2 to H2O, and has a calibration curve range from 1.5 μM to 230 mM with high response time and good selectivity. It can also detect H2O2 in actual samples such as milk and lake water, showing great potential in environmental monitoring.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Guang Xuan Hu, Qianghai Rao, Ge Li, Yan Zheng, Yuhang Liu, Chunxian Guo, Fuhua Li, Fang Xin Hu, Hong Bin Yang, Feng Chen
Summary: Simultaneous detection of dihydroxybenzene isomers, namely hydroquinone (HQ), catechol (CC), and resorcinol (RS), is crucial for water quality control due to their high toxicity and frequent coexistence. However, accurately and simultaneously detecting these isomers is challenging due to their similar structure and properties. In this study, an electrochemical flexible strip with single-atom cobalt was developed through high-resolution electrohydrodynamic printing for the simultaneous detection of dihydroxybenzene isomers. The strip exhibited excellent sensing performance and demonstrated the accurate detection of HQ, CC, and RS in textile wastewater.
Article
Chemistry, Multidisciplinary
Feng Du, Jixin Yao, Hui Luo, Yanru Chen, Yujie Qin, Yuxin Du, Yijian Wang, Wei Hou, Miaoxi Shuai, Chunxian Guo
Summary: This study demonstrates a highly efficient electrocatalyst Cu/NiFe LDH for both NO3-RR and OER reactions. Cu/NiFe LDH with optimized active sites and coupled interface characteristics can enhance the reaction rate and stability.
Article
Chemistry, Physical
Hui Liu, Jingsha Li, Feng Du, Luyun Yang, Shunyuan Huang, Jingfeng Gao, Changming Li, Chunxian Guo
Summary: In this study, a CuO NWAs@Co3O4 core-shell heterostructure catalyst was proposed for efficient electrochemical nitrate reduction to ammonia (NRA). Compared with pure CuO NWAs and Co3O4 flocs, CuO NWAs@Co3O4 exhibited significantly enhanced NRA performance.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Zhuanzhuan Shi, Yunpeng Li, Xiaoshuai Wu, Kaiwen Zhang, Jiatao Gu, Wei Sun, Chang Ming Li, Chun Xian Guo
Summary: A unique material of GDY@AuNPs is developed for an electrochemical tyrosine (Tyr) sensor. Its excellent sensing performance is mainly due to the alkyne of GDY strongly chelating with AuNPs and promoting the absorption of Tyr via π-π interaction.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.
