ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Yali Feng,Luyan Yang,Yingxing Li,Chuanfang Zhao,Nuermaimaiti Yisimayili,Jinhui Yang,Xincun Dou,Baiyi Zu
The substituent design and photophysical property manipulation are of paramount importance in fluorescent probe design, particularly crucial for chemically inactive molecules that lack reactive functional groups, such as synthetic cannabinoids. Here, a ratiometric fluorescent probe, 2-(5-phenyl-8-(4-(trifluoromethyl)phenyl)pyrimido[4,5-d]pyridazin-2-yl)phenol (DPTF), was selected and synthesized using trifluoromethyl as an electron acceptor for the sensitive and specific detection of one representative synthetic cannabinoid, JWH-018 (1-naphthyl(1-pentyl-1H-indol-3-yl)methanone). The DPTF probe, driven by intermolecular through-space charge transfer (TSCT), exhibits a theoretically calculated limit of detection (LOD) of 2.16 nmol/mL to liquid JWH-018, with low naked-eye detection limits of 101 nmol/mL for liquid JWH-018 and 147 nmol/mL on the porcelain spot plate, and also demonstrates good anti-interference capabilities with 18 substances. The practicability of the probe was further verified through testing E-liquid, urea, artificial saliva, local sewage, and cigarettes, successfully detecting trace amounts of impure JWH-018 in both simulated and real scenarios. Moreover, this work contributes to the probe design methods to understand the photophysical mechanisms that dominate molecular recognition, and we expect that the detection of synthetic cannabinoids is essential for comprehending their epidemiological spread and preventing incidents related to drug-impaired driving or violence.
研究领域:
分析化学
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生物化学
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材料科学
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法医学
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传感器技术
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Lan Zhao,Qiqi Hong,Ningning Tan,Xinda You,Biao Huang,Beili Lu,Jianhua Lv,Lirong Tang
Heterostructures comprising zero–dimensional (0D) nanoparticles and two–dimensional (2D) nanosheets have garnered considerable interest for sensing applications. Guanine exhibits extraordinary functionality in terms of their abundant hydrogen bond donors/acceptors. In this study, the protonated amine matrix of guanine serves as augmented active sites, uniformly forming guanine nanoparticles (GN) between 2D vermiculite nanosheets (VMT) confined space. Through electrostatic interactions and cross–linking with heptanedioic acid (HA), a self–assembly heterostructure (GN/VMT–HA) was constructed, which may offer abundant transport channels for enhanced humidity sensing and proton migrations. The proton migrations of GN/VMT–HA increased from 0.585 mS/cm (11% RH) to 0.750 mS/cm (97%RH) at 25 °C. The humidity sensor based on GN/VMT–HA demonstrates excellent performance, including high sensitivity (30.20 Hz/%RH), small hysteresis (1.45% RH) and short response/recovery time (25 s/7 s). This study offers a simple green method for constructing 0D/2D nanocomposites for proton transfer and humidity–sensing applications.
研究领域:
材料科学
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传感器技术
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纳米技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Xin Kang,Jiancong Liu,Dongxu Wang,Chungui Tian,Honggang Fu
CO 2 hydrogenation to hydrocarbons under high space velocity is crucial for industrial applications, but traditional Fe-based catalysts often suffer from the low activity and poor stability. Herein, we report a new tandem catalyst system combining Pt/TiO 2 catalysts with Fe 3 C catalysts for the direct conversion of CO 2 into C 2 -C 4 hydrocarbons under high space velocity. The Pt/TiO 2 component promotes *CO intermediate production with an enhanced Reverse Water-Gas Shift (RWGS) reaction efficiency, providing a highly reactive species for the Fe 3 C catalyst to achieve Fischer-Tropsch synthesis (FTS). By maximizing the contact interface between the Pt/TiO 2 and Fe-based components through a granule mixing configuration, we achieve significant enhancements in both CO 2 conversion rate (24.0 %) and C 2 -C 4 hydrocarbons selectivity (51.1 %) under the gaseous hourly space velocity (GHSV) of 100000 mL g cat −1 h −1 . Besides, excellent stability is achieved by the tandem catalysts with continuous catalysis for up to 80 h without significant decrease in activity. Through modulation of the reduction states of iron oxide, we effectively tune the composition of Fe-based catalyst, thereby tailoring the product distribution. Through this work, we not only offer a promising avenue for reducing CO 2 for efficient CO 2 utilization but also highlight the importance of catalyst design in advancing sustainable chemical synthesis.
研究领域:
催化化学
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环境科学
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能源化学
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DOI
PubMed
高影响因子
Molecular Catalysis
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2024
·
IF 3.9
Liwen Yin,Qianqian Zhang,Hefeng Cheng,Yuanyuan Liu,Baibiao Huang,Peng Wang
Photocatalytic synthesis of carbonyl compounds (aldehydes or ketones) offers great potential for sustained development in the production of pharmaceuticals and fine chemicals. Nevertheless, exploring photocatalysts with high stability, activity, and selectivity remains a significant challenge. In this study, Cs 3 Bi 2 Br 9 (CBB) perovskite nanocrystals have been successfully fabricated by confining the in-situ growth of perovskite CBB within mesoporous molecular sieve SBA-3. The obtained nanocrystals (2–4 nm) possess the advantages of excellent stability, exceptional dispersibility, abundant active sites, and enhanced charge carrier separation capability. Under visible light irradiation and air atmosphere, the CBB@SBA-3 could effectively oxidize benzyl alcohol to benzaldehyde with a total yield of 98.9 μmol, which is 22 times superior to that of bulk CBB, accompanied by a remarkable 99 % selectivity. Comparative experiments and in situ characterizations reveal the roles of electron ( e − ), hole ( h + ), and superoxide radical (·O 2 − ), while successfully capturing the carbon intermediates (·C) during the reaction process, further providing a comprehensive elucidation of the mechanism underlying the conversion of benzyl alcohol to benzaldehyde. This work is expected to provide insights into extending the design and photocatalytic application of Bi-based halide perovskite nanocrystals.
研究领域:
材料科学
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光催化化学
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DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Chenguang Ouyang,Tian Tu,Haojie Yu,Li Wang,Zhipeng Ni,Jian Yang,Yanzhao Dong,Xiaodi Zou,Weijie Zhou,Jinyi Liu,Dingning Chen,Yu Wang,Xudong Wu,Hong Yi,Xunchun Yuan,Zhenfeng Liu,Hui Lu
Janus hydrogels have promising applications in tendon healing and anti-peritendinous adhesions. However, their complicated preparation methods, weak mechanical properties, and unstable adhesion interfaces have severely limited their application in suture-free and high-quality tendon healing. In this work, by controlling the interfacial distribution of free -COOH groups and cationic-π structures on both sides of the hydrogels, a series of PZBA-EGCG-ALC Janus hydrogels with varying degrees of asymmetric properties are successfully prepared using a simple and efficient one-step synthesis method. The tensile strength and elongation at the break of the Janus hydrogel are as high as 0.51 ± 0.04 MPa and 922.89 ± 28.59%. In addition, the Janus hydrogel can achieve a high difference in adhesion strength (nearly 20-fold) while maintaining a strong adhesion strength on their bottom sides (up to 524.8 ± 33.1 J m −2 ). In the spatial dimension, its excellent mechanical compliance and one-sided adhesion behavior can provide effective mechanical support and physical barriers for the injured Achilles tendons. More importantly, the Janus hydrogel can also minimize early inflammation generation in the time dimension via its ROS-responsive PZBA-EGCG prodrug macromolecules. This study provided a more effective and convenient suture-free strategy for constructing Janus hydrogels to promote high-quality tendon healing.
研究领域:
生物材料学
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再生医学
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创伤修复
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DOI
PubMed
高影响因子
Journal of Materials Chemistry A
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2024
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IF 10.7
Rui Zhu,Peng Sun,Guofeng Cui,Yaoguang Yu,Shaojun Ke,Jie Zhao
The exploitation of ion-selective membranes with high power density and low resistance is crucial for harvesting osmotic energy in natural environments. However, the exploration of membranes that synergistically satisfy the demands of these properties in osmotic energy conversion remains largely unresolved. Herein, we demonstrate the application of a negative surface-modified 3D porous poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) hydrogel for osmotic membranes, which effectively improved their deficiencies. Experiments, validation and simulations confirmed that the hydrogel membranes have remarkable space charge-modulated ion transport properties. Consequently, an impressive power output of 6.26 W m−2 can be realized, which exceeds the prevailing commercial standard (5 W m−2). Meanwhile, five device units were connected in series to charge a supercapacitor which exhibited an impressive selectivity rate of 95.6%, coupled with an electrochemical energy conversion efficiency of approximately 45.8%. This research paves a new avenue towards the application of hydrogels in ultra-high performance osmotic membranes.
研究领域:
材料科学
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纳米技术
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能量收集
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电化学
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膜技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Chen Wang,Yuepeng Liu,Zhongfang Li,Likai Wang,Xueliang Niu,Peng Sun
The 2D Fe, N-codoped graphene (2D Fe-NG) with high oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performances for Zn-air batteries (ZABs) is prepared by a facile synthesis method, which used nitrogen-containing polymer (2,5-benzimidazole) (ABPBI), Fe salts and the cationic surface-active agent treated montmorillonite (CMMT) layer template. The vacuum assist and heat treatment of ABPBI/CMMT at 350 °C are the keys of Fe 3+ addition. The characterization analysis demonstrates that added Fe 3+ exists in the form of Fe-N x bonds formed by coordination with N species of ABPBI in MMT. Owing to the existed Fe-N x sites in 2D Fe-NG, it possesses excellent ORR performance better than 2D NG and 20 wt% Pt/C in O 2 -saturated 0.1 M KOH electrolyte. For OER, the performance of 2D Fe-NG is close to that of RuO 2 . The self-made ZAB based on 2D Fe-NG exhibits high peak power density, excellent rechargeable performance, and higher D-C cycling stability.
研究领域:
材料科学
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电化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2018
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IF 3.057
Yiwei Zhu,Songliu Yuan,Chengliang Lu,Bing Xie,Pengyuan Fan,Mohsin Ali Marwat,Weigang Ma,Kai Liu,Hongming Liu,Haibo Zhang
Polymer-based nanocomposite capacitors for energy storage with high discharged energy density and charge-discharge efficiency are of great importance to modern electronic devices and electrical systems. Herein, the energy storage properties are improved by applying double-layered core-shell nanoparticles as fillers. The dopamine was adopted as the outermost layer to improve the dispersibility and compatibility between the fillers and matrix. The high resistance of SiO 2 works as a barrier to limit the movement of space charge over the BaTiO 3 (BT) surface when a high electric field is applied, leading to an enhancement of breakdown strength as well as a decreased space charge polarization, so that an enhancement of discharged energy density and charge-discharge efficiency are achieved. The SiO 2 @BT/P(VDF-CTFE) also shows weaker frequency dependence, indicating the reduction of space charge polarization. A possible mechanism of reduced space charge polarization was proposed to explain the effects of SiO 2 . This work demonstrates that constructing a core-shell structure with high resistance is an effective way to improve the energy properties of nanocomposite capacitors.
研究领域:
材料科学
·
电气工程
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DOI
高影响因子
Advanced Sustainable Systems
·
2023
·
IF 7.1
Jingyun Wang,Wei Li,Yanhong Li,Aisheng Huang
Fine regulation of the physicochemical structure of carbon-based electrocatalysts to optimize the adsorption energies of oxygen intermediates is critically important to enhance the reaction kinetics of the oxygen evolution/reduction reaction (OER/ORR) but remains a huge challenge. Herein, nano-space confined growth of Co 9 S 8 nanoparticles (NPs) in porous carbon is realized through an in situ confined growth strategy by using thiol-chains functionalized COF (COF-S-SH) as a confined template. COF-S-SH is used as binding sites to immobilize Co ions to improve the interaction between metal nanoparticles (NPs) and carbon skeletons, and simultaneously serves as a confined void to avoid the aggregation metal NPs. Impressively, as an efficient bifunctional catalyst, the resulting Co 9 S 8 /COF-S 800 shows significantly enhanced oxygen electrocatalysis with a small OER-ORR voltage gap of 0.76 V, vastly superior to that of pristine COF-S 800 . Furthermore, the assembled Zn–air battery with Co 9 S 8 /COF-S 800 catalyst displays a high peak power density of 181.5 mW cm −2 and great durability over 60 h charge–discharge cycles.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yong Xu,Ping Wang,Di Tian,Man Zhang,Weili Dai,Jianping Zou,Shenglian Luo,Xubiao Luo
Photocatalytic CO 2 reduction has been regarded as an ideal method to simulate photosynthesis for achieving carbon neutralization. However, poor charge transfer efficiency limits its development. Herein, an efficient Co/CoP@C catalyst was prepared with compact contact of Co and CoP layer by using MOF as precursor. At the interface of Co/CoP, the difference in functionality between the two phases may result in uneven distribution of electrons, thus forming a self-driven space-chare region. In this region, spontaneous electron transfer is guaranteed, thus facilitating the effective separation of photogenerated carriers as well as boosting the utilization of solar energy. Furthermore, the electron density of active site Co in CoP is increased and more active sites are exposed, which promotes the adsorption and activation of CO 2 molecules. Together with suitable redox potential, low energy barrier for *COOH formation and easy desorption of CO, the reduction rate of CO 2 catalyzed by Co/CoP@C is 4 times higher than that of CoP@C.
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产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 15
·2300139
·
IF 15.1
Zhen Zhang,Zhenguang Wang,Xiao Liu,Yu-e Shi,Zhiqiang Li,Yanli Zhao
Inorganic boric acid (BA) is generally not considered an efficient afterglow material, and several groups have reported its extremely weak room-temperature phosphorescence (RTP) in the blue spectral region. It is discovered that heat treatment of BA results in increased afterglow intensity (27-fold increase) and prolonged emission lifetime (from 0.83 to 1.59 s), attributed to enhanced through-space conjugation (TSC) of BA. The afterglow intensity of BA can be increased further (≈415 folds) by introducing p-hydroxybenzoic acid (PHA), which contains a conjugated molecular motif, to further promote the TSC of the BA system. This combination results in the production of afterglow materials with a photoluminescence quantum yield of 83.8% and an emission lifetime of 2.01 s. In addition, a tunable multicolor afterglow in the 420–490 nm range is achieved owing to the enhancement of the RTP and thermally activated delayed fluorescence of PHA, where BA exerts a confinement effect on the guest molecules. Thus, this study demonstrates promising afterglow materials produced from extremely abundant and simple precursor materials for various applications.
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DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
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2023
·
IF 10.7
Yunxiao Xie,Mengjiao Ruan,Jie Zhang,Maria Kibtia,Yan Li,Bin Li,Yangyang Zhang,Shilin Liu
The development of new water-in-water (W/W) emulsion systems and the improvement of the long-term stability of emulsions could create opportunities for studying interfacial bionic systems and microencapsulation applications. In this study, the new W/W emulsion systems were constructed from hydroxypropyl methylcellulose (HPMC) and maltodextrin (MD). The effects of cellulose nanocrystals (CNC) and environmental factors (ionic strength and pH) on the stability of W/W Pickering emulsions were investigated. The stabilizing effect was observed at contents of CNC as low as 0.025 wt%. The W/W Pickering emulsion showed no phase separation within 30 days when the CNC concentration was above 0.025 wt%, indicating that the emulsions were stable during the observation period. The stability of W/W Pickering emulsions was driven by the electrostatic repulsion provided by the CNC adsorbed at the droplet interface, which decreased with increasing NaCl concentration. This was attributed to the charge-shielding effect of NaCl weakening the electrostatic repulsion of the CNCs at the emulsion droplet interface. Lactobacillus helveticus cells were encapsulated in the W/W Pickering emulsion. These results revealed that the developed W/W Pickering emulsions have potential applications in protecting the activity of probiotic bacteria and investigating the behavior of cells in restricted spaces.
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高影响因子
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