CRYSTENGCOMM
·
2019
·Vol. 22
·期 3
·448-457
·
IF 3.382
Hao Liu,Xing Yang,Shanyu Wu,Mingtao Zhang,Sean Parkin,Shuang Cao,Tonglei Li,Faquan Yu,Sihui Long
Flunixin [2-(3-trifluoromethyl-2-methyl-phenylamino)-nicotinic acid, FLX], a potent nonsteroidal anti-inflammatory drug widely used in veterinary medicine, was found to exist in at least two crystal forms (I and II), in contrast to clonixin [2-(3-chloro-2-methyl-phenylamino)-nicotinic acid, CLX], which exists in four solvent-free forms and multiple solvates. Form I was harvested from a variety of solvents and characterized by single-crystal X-ray diffraction, PXRD, FT-IR, and Raman spectroscopy. Its crystal structure is sustained on the strong acid–pyridine hydrogen bond. Form II was generated by thermal treatment of form I. Other aspects of this polymorphic system were investigated both experimentally and theoretically. Quantum chemistry calculations were performed to shed light on the lack of polymorphism from solution-phase crystallization. Conformational scan of the dihedral angle C2–N7–C8–C9 (τ) revealed two stable conformations, one with τ near 170°, and the other near 70°, corresponding to the molecule in the crystal. Hirshfeld analysis accounted for the major intermolecular interactions contributing to the overall stability of the crystal.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
·
IF 4.598
Ping Xiao,Guodong Zhu,Xiaohong Shang,Bin Hu,Boshuang Zhang,Zhaoyu Tang,Jianmao Yang,Jianyun Liu
The Fe-metal organic framework decorated MXene (Fe-MOF/MXene) was in-situ synthesized by one-step hydrothermal method in the presence of MXene. Using Fe-MOF/MXene as modifier, the obtained Fe-MOF/MXene electrode presented excellent electrochemical activity due to the high surface area and good conductivity of MXene. A sensitive arsenite electrochemical sensor was fabricated based on the strong As-hydroxyl bonding at the Fe-MOF/MXene electrode, confirmed by X-ray photoelectron spectroscopy. Cyclic voltammetry characterization indicated that MXene facilitated the charge transfer with enhanced electrochemical response. The Fe-MOF/MXene modified electrode exhibited super-high current response to As(III) by square wave anodic stripping voltammetry, with extremely high sensitivity (8.94 µA·(ng·L −1 ) −1 ·cm −2 ) and super-low limit of detection (0.58 ng·L −1 ). The analysis of the real water demonstrated that the Fe-MOF/MXene-based sensor was feasible for the detection of As(III) in practical application.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Aiyong Wang,Jiajia Ding,Mingqi Li,Peiyao Song,Zhiyuan Zhao,Yanglong Guo,Yun Guo,Li Wang,Qiguang Dai,Wangcheng Zhan
Short carbon chain alkanes, as typical volatile organic compounds (VOCs), have molecular structural stability and low molecular polarity, leading to an enormous challenge in the catalytic oxidation of propane. Although Ru-based catalysts exhibit a surprisingly high activity for the catalytic oxidation of propane to CO2 and H2O, active RuOx species are partially oxidized and sintered during the oxidation reaction, leading to a decrease in catalytic activity and significantly inhibiting their application in industrial processes. Herein, the Ru/Ce@Co catalyst is synthesized with a specific structure, in which cerium dioxide is dispersed in a thin layer on the surface of Co3O4, and Ru nanoparticles fall preferentially on cerium oxide with high dispersity. Compared with the Ru/CeO2 and Ru/Co3O4 catalysts, the Ru/Ce@Co catalyst demonstrates excellent catalytic activity and stability for the oxidation of propane, even under severe operating conditions, such as recycling reaction, high space velocity, a certain degree of moisture, and high temperature. Benefiting from this particular structure, the Ru/Ce@Co (5:95) catalyst with more Ce3+ species leads to the Ru species being anchored more firmly on the CeO2 surface with a low-valent state and has a strong potential for adsorption and activation of propane and oxygen, which is beneficial for RuOx species with high activity and stability. This work provides a novel strategy for designing high-efficiency Ru-based catalysts for the catalytic combustion of short carbon alkanes.
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JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 3.6
Xin Liu,Xiaojun Wang,Rongrong Chen,Qi Liu,Dalei Song,Gaohui Sun,Jing Yu,Jingyuan Liu,Jiahui Zhu,Shifeng Guo,Jun Wang
Biological fouling will cause severe damage to the functionality of marine underwater facilities, shorten their service life, impede their normal operation, and trigger a biological invasion event. The traditional marine antifouling coatings release heavy metal elements, which cause harm to the marine environment. To overcome this issue, a self-polishing antifouling resin based on vanillin methacrylate (VMA) was prepared via the free radical polymerization method. In seawater, the VMA-based coatings achieve self-polishing through the hydrolysis of the phenolic ester group. The hydrolysis mechanism of VMA was calculated using density functional theory by Cp2k software, and the results show that VMA achieves one-step hydrolysis by the S N 2 mechanism. It exhibited antibacterial and environmentally friendly antifouling properties by releasing vanillin, which is a natural antifouling active substance. The antibacterial, diatom adhesion inhibition, and the 9-month marine field test demonstrated the excellent antifouling performance of VMA-based coatings. It provides a novel concept for environmentally friendly self-polishing coatings and has a promising application prospect. Graphical
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OPTICS EXPRESS
·
2024
·Vol. 32
·期 9
·15851-15861
·
IF 3.2
Xiujuan Zhong,Wang Zhan,Li Ma,Guolu Yin,Guolu Yin
Cadmium (Cd2+) ion is one of the most crucial industrial pollutants that cause serious harm to the human body. We proposed and experimentally demonstrated a highly sensitive Cd2+ sensor based on hydrogel coated excessively tilted fiber grating. The hydrogel with the functional monomer of the allyl thiourea can specifically bind to Cd2+, and hence forming a complex. The grating excites high order cladding modes, and ensures a sufficient interaction between the light and hydrogel binding to Cd2+, providing highly sensitive monitoring. The results show that the sensor can detect 0-160 pM Cd2+ in aqueous solution. The maximum sensitivity is 10600 nm/µM, and the minimum detection concentration is 20 pM (about 0.004 ppb), which is much less than that of the international standard (3 ppb). The proposed sensor exhibits high sensitivity, ultra-low detection limit, specificity, and a compact structure, offering potential as a tool for Cd2+ detection in aqueous solution.
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Journal of Materials Chemistry C
·
2024
·
IF 5.7
Liangkang Huang,Jianwei Li,Shuting Chen,Bilin Zhang,Shengping Li,Wei Fan,Qiangli Zhao,Xuman Wang
Developing a piezoelectric polymer with high-temperature resistance is crucial for fabricating flexible piezoelectric sensors that can be used under extreme conditions. Herein, we for the first time found the piezoelectric properties of polyimide (PI) nanofibers and further enhanced their output voltage characteristics by introducing a fluorine-containing hexafluorodianhydride (6FDA) unit into the PI nanofibrous matrix. The as-fabricated sensor can produce a stable piezoelectric output of 10 V with a 478.72 mV N−1 sensitivity. The response and recovery times are 15 ms, respectively, and the output can remain stable after 10,000 cycles at 15 Hz/10 N, demonstrating excellent durability. Meanwhile, the 10–30 V piezoelectric output signals generated by different actions can be accurately identified for wearable applications. Furthermore, it is found that fluorinated polyimide (FPI) prepared by electrospinning can maintain structural stability before 500 °C, and its thermal decomposition temperature is above 550 °C. Moreover, the surface morphology with high porosity and the low surface energy of F atoms endow the nanofiber film with excellent superhydrophobic properties with a water contact angle of 139.6°. This work presents PI nanofibers with high-temperature resistance and outstanding piezoelectric properties, laying a potential foundation for their application in wearable and flexible electronic devices that can be used in extreme environments.
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DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 36
·15093-15100
·
IF 3.5
Fang Wu,Yuhong Jiao,Jin-long Ge,Yujun Zhu,Chao Feng,Zhong Wu,Qiu Li
Facilitating the surface reconstruction of pre-catalysts has been considered an effective strategy for constructing low-cost and highly efficient OER electrocatalysts. Metal doping is a feasible way to activate the surface reconstruction, thus enhancing the OER performance. Herein, we report a facile hydrothermal method to synthesize a series of Zn-doped Ni-MOF on nickel foam (NiZn-MOF/NF) as promising pre-catalysts toward the oxygen evolution reaction (OER). The Zn leaching of NiZn-MOF/NF can promote the surface self-reconstruction of NiZn-MOF/NF into oxygen-vacancy-rich NiOOH after electrochemical activation. Benefiting from the optimized electronic structure, abundant defects, more accessible active sites, and enhanced electrical conductivity, the reconstructed metal oxyhydroxide hybrids exhibit better electrocatalytic activity than the catalysts transformed from Ni-MOF/NF without Zn doping. The optimized NiZn-MOF/NF-OH as an OER catalyst has an overpotential of 336 mV at 100 mA cm−2, and a Tafel slope of 65.9 mV dec−1, as well as stability over 12 h. This work reveals that Zn cation-doping/leaching induces the surface reconstruction of pre-catalysts for enhanced oxygen catalytic activity, which provides a new approach for the development of advanced electrocatalysts.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Xue Jing,Dong Xue,Liu Chunxiao,Li Jiawei,Dai Yizhou,Xue Weiqing,Luo Laihao,Ji Yuan,Zhang Xiao,Li Xu,Jiang Qiu,Zheng Tingting,Xiao Jianping,Xia Chuan
Using renewable electricity to convert CO 2 into CO offers a sustainable route to produce a versatile intermediate to synthesize various chemicals and fuels. For economic CO 2 -to-CO conversion at scale, however, there exists a trade-off between selectivity and activity, necessitating the delicate design of efficient catalysts to hit the sweet spot. We demonstrate here that copper co-alloyed with isolated antimony and palladium atoms can efficiently activate and convert CO 2 molecules into CO. This trimetallic single-atom alloy catalyst (Cu 92 Sb 5 Pd 3 ) achieves an outstanding CO selectivity of 100% (±1.5%) at −402 mA cm −2 and a high activity up to −1 A cm −2 in a neutral electrolyte, surpassing numerous state-of-the-art noble metal catalysts. Moreover, it exhibits long-term stability over 528 h at −100 mA cm −2 with an FE CO above 95%. Operando spectroscopy and theoretical simulation provide explicit evidence for the charge redistribution between Sb/Pd additions and Cu base, demonstrating that Sb and Pd single atoms synergistically shift the electronic structure of Cu for CO production and suppress hydrogen evolution. Additionally, the collaborative interactions enhance the overall stability of the catalyst. These results showcase that Sb/Pd-doped Cu can steadily carry out efficient CO 2 electrolysis under mild conditions, challenging the monopoly of noble metals in large-scale CO 2 -to-CO conversion.
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BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Lin Jiang,Liting Yao,Huajing Xie,Chenjiang Liu,Weiwei Jin
Glucose sensors are critical analytical devices designed for precise and continuous monitoring of glucose concentrations, playing a pivotal role in healthcare, particularly in diabetes management. Here, we synthesis glucose oxidase (GOx)/Se hydrogel to detect the glucose, thereby generating measurable electrical signals. Further, the transfection of electronic signals rely on the poly(dopamine) (PDA) grid in hydrogel. The PDA intercalates into Se through coordination recombination to form a clustered conductive grid. This structure was interleaved in Se gel network through dopamine. Through the N-π and π-π interactions, the PDA aggregates and penetrates through the hydrogel forming a rapid conducting network. From the calculation and characterizations, the appropriate amount of PDA interpenetrates the hydrogel grid and build a cascade catalysis channel for electronic signals transfer. As a result, the hydrogel glucose sensor displayed 54.4 μA mM −1 ·cm −2 sensitivity and 1.38 μM limit of detection at a linear range of 0–15 mM. Compared to the hydrogel without PDA, the PDA hydrogel showed a significantly increasing of sensitivity.
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Bioactive Materials
·
2025
·
IF 20.3
Pengning Fan,Yuqi Liu,Xingyu Qian,Jinsheng Li,Yin Xu,Xiang Qiu,Lu Tong,Fuqiang Tong,Zhengfeng Fan,Yidan Zheng,Hanshen Luo,Teng Zeng,Yunbing Wang,Li Xu,Fei Li
In situ regeneration of tissue-engineered heart valves (TEHV) is a promising strategy to overcome the limitations of existing heart valve prostheses. Although, decellularized aortic valves (DAVs) are widely regarded as a scaffold in the construction of TEHV, the poor hemocompatibility and adverse immune responses make DAV scaffolds prone to thrombosis and degradation, thus hindering recellularization and in situ regeneration. Our study developed an immune-regulatory strategy involving the use of hydrogel-encapsulated nanoparticles to modify DAV scaffolds. Specifically, folic acid- and hyaluronic acid-modified mesoporous silica nanoparticles (FA-HA-MSNs@CY-09) were engineered to deliver NOD-like receptor family, pyrin domain containing 3 (NLRP3) inhibitor CY-09, thereby targeting macrophages, modulating their polarization and establishing a pro-regenerative immune microenvironment. The reactive oxygen species (ROS)-responsive hydrogel delivering FA-HA-MSNs@CY-09 enabled intelligent nanoparticle release and ROS scavenging. Results demonstrated that the hydrogel-modified DAV scaffold exhibited ROS-responsive release of FA-HA-MSNs@CY-09, which effectively induced macrophage polarization toward the pro-remodeling M2 phenotype. In vitro, the scaffold showed favorable mechanical properties, cytocompatibility, and hemocompatibility. Transcriptome sequencing elucidated the macrophage-reprogramming mechanism of the scaffold. In vivo, the scaffolds promoted significant M2 macrophage infiltration shortly after implantation, facilitating endothelial tissue formation. This resulted in enhanced endothelialization and interstitial cell infiltration under blood flow, without thrombosis or calcification. The novel heart valve overcomes various limitations of conventional heart valve prostheses and demonstrates considerable promise for clinical translation, particularly as an immunomodulatory biomaterial strategy.
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Nano Energy
·
2022
·
IF 19.069
Weiyan Li,Zhongqian Song,Huijun Kong,Minqi Chen,Shengjie Liu,Yu Bao,Yingming Ma,Zhonghui Sun,Zhenbang Liu,Wei Wang,Li Niu
Biocompatible and reliable temperature monitoring platforms are constantly required to develop wearable electronics for future sophisticated health diagnosis and protection of high-risk individuals. Considering the fact that heat exposures during pregnancy might increase the risk for abortions, premature birth or congenital heart defects, here, we propose a conceptual self-powered temperature monitoring platform for simultaneous real-time tracking of the temperature variation in lower limb of a pregnancy woman and her surrounding environment during exercise. Thanks to the special channel design and local spindle-shaped construction, the single yarn-based temperature (SYBT) sensor exhibits ultrahigh sensitivity, bending resistance, good biocompatibility and integrability with fabrics. A vertical contact-separate mode triboelectric nanogenerator embedded into a shoe extracts energy from body motion to power the SYBT sensors, achieving the self-powered features of the platform. Coupled with wirelessly date transmitting and user interfaces, the temperatures of pregnant volunteer’s lower limb and surrounding ambience are simultaneously and continuously monitored during exercise in a self-powered manner. Such SYBT sensors and self-powered design strategy provides a new avenue for future temperature monitoring electronics.
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Advanced Energy Materials
·
2023
·Vol. 14
·期 3
·2302712
·
IF 27.8
Xinhai Yuan,Xuelong Yuan,Shuaishuai Zhang,Peng Chen,Xiongwei Wu,Jilei Ye,Lili Liu,Lijun Fu,Tao Wang,Kenneth I. Ozoemena,Yuping Wu
Like other aqueous batteries, aqueous rechargeable Al-ion batteries (ARAIBs) have attracted much attention due to their high safety and low cost. However, the low energy density of ARAIBs limits its popularization and application. In order to solve this problem, in addition to choosing Al metal as the negative electrode, it is also necessary to choose a suitable positive electrode material. Here, a cubic phase cobalt hexacyanoferrate (CoHCF) with excellent rate and cycling performance is used as the positive electrode material. Due to the reversible catalysis of the Cl − /Cl 0 reaction at high potential in saturated AlCl 3 solution, it has the characteristics of high capacity up to 103.5 mAh g −1 . Combined with the Al metal as negative electrode, an ARAIB with an average discharge voltage of 1.56 V and an energy density of 155 Wh kg −1 is constructed, which shows outstanding cycling and rate performances.
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