Science China-Chemistry
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2025
·
IF 9.7
Zeng Si-Min,Zheng Di-Wei,Pan Ting,Ding Xing-Lan,Zhang Yun,Yang Chi-Hui,Cheng Si-Xue,Zhang Xian-Zheng
Natural biological microtubular networks have undergone adaptive evolutionary selection and may offer viable solutions to design challenges in artificial microtubular networks. The plasmodium of the slime mold Physarum polycephalum ( P. polycephalum ) extends continuously to form a protoplasmic microtubular network structure, directly connecting food sources. Computational simulations revealed that the formation of this adaptive P. polycephalum microtubular network could be captured by a mathematical algorithm. Inspired by the P. polycephalum microtubular networks, we propose an adaptive optimization design method for artificial microtubular networks. Specifically, we utilized hydrogels with biodegradable and tissue-adhesive properties to replicate the P. polycephalum microtubular networks via photomask. In Rhodamine B diffusion and glucose-catalyzed reaction experiments, we found that the P. polycephalum microtubular networks exhibited significantly enhanced efficiency compared to vascular and artificial networks. Furthermore, we demonstrated the potential for uric acid (UA) degradation of the hydrogels with a real P. polycephalum microtubular network loaded with urate oxidase (UOx) in a rodent model of hyperuricemia. And this network achieved more than double the effect of the artificial network. This underscores the potential of natural microtubular networks to replace artificial microtubular networks.
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高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 10
·6421-6433
·
IF 4.9
Du Hong,Cheng Zhengbai,Liu Yingying,Hu Mengxin,Xia Mingfeng,Sun Xianhao,Lin Zhaoyun,Liu Hongbin
The toughness and adhesiveness of composite hydrogels play an important role in the field of wearable sensors, where they are used due to their remarkable flexibility and diverse specialized properties. In this work, a composite hydrogel with strong toughness and high adhesion for human motion detection and wireless sensing was obtained. Polydopamine (PDA)-modified cellulose nanofibers (PCNFs) were introduced into a polyvinyl alcohol (PVA) and polyacrylamide (PAM) network, resulting in the fabrication of a PCNF/PVA-PAM composite hydrogel. Lithium chloride served as a crosslinking agent and provided conductive ions, and the PCNFs provided the composite hydrogel with strong toughness and adhesion abilities. The compression strength of the obtained PCNF/PVA-PAM composite hydrogel was 1.1 MPa, and its adhesion strength to glass was 63.8 kPa. Moreover, the composite hydrogel exhibited good anti-freezing properties. The compression sensitivity of the composite hydrogel was 1.29, and it still maintained stability even after 500 testing cycles. The strain-sensing abilities of the composite hydrogel were satisfactory for different human body parts. This composite material holds great promise in the fields of wearable devices and wireless signal transmission.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 5
·1-11
·
IF 5.3
Liu Qingju,Zhu Junyi,Wang Hui,Luan Yunxia,Zhang Zhikun
A covalent organic framework–based strategy was designed for label-free colorimetric detection of pesticides. Covalent organic framework–based nanoenzyme with excellent oxidase-like catalytic activity was synthesized. Unlike other artificial enzymes, porphyrin-based covalent organic framework (p-COF) as the oxidase mimic showed highly catalytic chromogenic activity and good affinity toward TMB without the presence of H 2 O 2 , which can be used as substitute for peroxidase mimics and H 2 O 2 system in the colorimetric reaction. Based on the fact that the pesticide-aptamer complex can inhibit the oxidase activity of p-COF and reduced the absorbance at 650 nm in UV–Vis spectrum, a label-free and facile colorimetric detection of pesticides was designed and fabricated. Under the optimized conditions, the COF-based colorimetric probe for pesticide detection displayed high sensitivity and selectivity. Taking fipronil for example the limit of detection was 2.7 ng/mL and the linear range was 5 –500,000 ng/mL. The strategy was successfully applied to the detection of pesticides with good recovery , which was in accordance with that of HPLC–MS/MS. The COF-based colorimetric detection was free of complicated modification H 2 O 2 , which guaranteed the accuracy and reliability of measurements. The COF-based sensing strategy is a potential candidate for the sensitive detection of pesticides of interests. Graphical Abstract
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Xia Yanni,Shao Tong,Sun Yue,Wang Jianuo,Gu Chaoyuan,Zhang Chengjian,Zhang Xinghong
The precise placement of thioester bonds into sequence-controlled polymers remains a grand challenge. Here, we demonstrate the versatile synthesis of sequence-controlled polymers from the step polymerization of cyclic thioanhydrides ( A ), diacrylates ( B ), and diols/diamines ( C ). In addition to easily accessible diverse monomers, the method is metal-free/catalyst-free, atom-economical, and wide in monomer scope, yielding 107 polymers with >90% yields and weight-average molecular weights of up to 175.4 kDa. The obtained polymers contain ABAC -type repeating units and precisely distributed in-chain thioester and ester (and amide) groups. The chemoselectivity of the polymerization is revealed by density functional theory calculations. The polymer library exhibits considerably tunable performance: glass-transition temperatures of −36–72 °C, melting temperatures of 43–133 °C, degradability, thermoplastics/elastomers, and thioester-based functions. This study furnishes a facile method to precisely incorporate thioester bonds into sequence-controlled polymers.
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JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 2
·1-13
·
IF 2.8
Zhang Song,Chen Zhang,Gao Yanfeng
Fogging on agricultural greenhouse covering films reduces solar transmission, resulting in insufficient photosynthetically active radiation and hindering crop growth. In this study, a long-acting antifogging composite film was developed by incorporating diatomite (DE) and sorbitan tristearate (STS) into low-density polyethylene (LDPE). The introduction of STS enabled the surface of LDPE to undergo a transition from hydrophobic to hydrophilic. The film has the ability of preventing fogging and increasing solar irradiation inside the greenhouse by 15%. On the 30th day of the hot fog test, the failure area of the film was only 20%, and the introduction of DE reduced the diffusion coefficient of STS from 0.2 to 0.06 cm 2 min −1 . Rheological properties and crystallinity testing revealed the interaction mechanism between STS and LDPE molecules. Greenhouse cultivation experiments showed that the chlorophyll content of Chinese cabbage ( Brassica rapa ssp. chinensis ) and spinach ( Spinacia oleracea ) grown under the antifogging film increased by 24% and 30%, respectively. This antifogging film can be produced on a large scale using the casting method and offers significant potential for improving the quality of greenhouse crops.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Chen Min,Liu Longgang,Chen Xueyan,Qin Xiaoxiao,Zhang Jianghao,Xie Shaohua,Liu Fudong,He Hong,Zhang Changbin
Efficient heterogeneous catalyst design primarily focuses on engineering the active sites or supports, often neglecting the impact of trace impurities on catalytic performance. Herein, we demonstrate that even trace amounts of sulfate (SO 4 2− ) residuals on Ru/TiO 2 can totally change the CO 2 reduction from methanation to reverse-water gas shift (RWGS) reaction under atmospheric pressure. We reveal that air annealing causes the trace amount of SO 4 2− to migrate from TiO 2 to Ru/TiO 2 interface, leading to the significant changes in product selectivity from CH 4 to CO. Detailed characterizations and DFT calculations show that the sulfate at Ru/TiO 2 interface notably enhances the H transfer from Ru particles to the TiO 2 support, weakening the CO intermediate activation on Ru particles and inhibiting the further hydrogenation of CO to CH 4 . This discovery highlights the vital role of trace impurities in CO 2 hydrogenation reaction, and also provides broad implications for the design and development of more efficient and selective heterogeneous catalysts.
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Yan Huijun,Huo Long,Li Mingxia,Azhati Hayinaer,Bai Jianwei
Uranium extraction from seawater is of great significance for the development of the nuclear industry. However, the adsorption of uranium is limited by selectivity of uranium and recycle performance. In this study, amidoxime-functionalized polymer (BP-AO) was prepared by coupling benzene with phenylacetonitrile to extraction uranium from aqueous solution. Adsorption experiments show that the adsorption progress of BP-AO can reach equilibrium within 5 min and the maximum adsorption capacity is 193.9 mg·g −1 calculated by Langmuir model. The selectivity of BP-AO for U(VI) is excellent and after five adsorption–desorption experiments, the adsorption capacity only decreased about 10%. The adsorption mechanism shows that the sorption is mainly due to the formation of stable chelates between the amidoxime groups and U(VI). These results demonstrate the potential application of the adsorbent for practical utilization.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-10
·
IF 5.3
Miao Pandeng,Zhu Dongyang,Du Shuaijing,Du Yingxiang
A capillary electrochromatography (CEC) synergistic enantioseparation system based on a novel nanomaterial synthesized by chiral molecularly imprinted polymers (CMIPs) and chiral metal organic frameworks (CMOFs) was developed. Compared with CMIPs and CMOFs alone, the enantioseparation performance of ofloxacin (OFL) of the CEC with the novel nanomaterial as stationary phases was greatly improved. CMOFs with chiral recognition ability have synergize with CMIPs to greatly improve the chiral selectivity of the novel stationary phases in CEC. As a proof-of-concept demonstration, a coated capillary column was prepared by a sol–gel method using S-OFL (template), iron-based cyclodextrin MOF (Fe-CD-MOF, a CMOF), 3-aminopropyltriethoxysilane (functional monomer), and tetraethyl orthosilicate (cross-linking agent). Then, the newly constructed CEC system has excellent enantioseparation performance of OFL with a resolution of 3.92. Finally, computerized molecular docking revealed that the difference in the binding ability of Fe-CD-MOF to ofloxacin enantiomers was an important mechanism for CEC chiral separation. This innovative development of synergistic chiral stationary phases based on CMOFs and CMIPs creates a highly efficient potential direction for enantiomer separation. Graphical
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JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Jia Zixuan,Chen Menghan,Yang Mohan,Chen Shenna,Zhang Xuhong
In this study, a novel fluorescent probe based on CuInS 2 quantum dots modified with alanine (Ala-CuInS 2 QDs) was developed for the detection of lead ions and cysteine (Pb 2+ and Cys). Ala-CuInS 2 QDs were synthesized through a one-step hydrothermal method exhibiting uniform size, good stability and water solubility. The QDs were then utilized as an “on-off-on” fluorescence sensor to detect Pb 2+ and Cys in the ranges of 0–20 µM and 0–55 µM respectively, with detection limits of 0.29 µM and 0.66 µM. The mechanism of fluorescence quenching and recovery processes was also explored. Furthermore, Ala-CuInS 2 QDs have been successfully applied to detect Pb 2+ in tap and river water and detect cysteine in serum.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Meng Jiashen,Hong Xufeng,Xiao Zhitong,Xu Linhan,Zhu Lujun,Jia Yongfeng,Liu Fang,Mai Liqiang,Pang Quanquan
Molten salt aluminum-sulfur batteries are based exclusively on resourcefully sustainable materials, and are promising for large-scale energy storage owed to their high-rate capability and moderate energy density; but the operating temperature is still high, prohibiting their applications. Here we report a rapid-charging aluminium-sulfur battery operated at a sub-water-boiling temperature of 85 °C with a tamed quaternary molten salt electrolyte. The quaternary alkali chloroaluminate melt – possessing abundant electrochemically active high-order Al-Cl clusters and yet exhibiting a low melting point – facilitates fast Al 3+ desolvation. A nitrogen-functionalized porous carbon further mediates the sulfur reaction, enabling the battery with rapid-charging capability and excellent cycling stability with 85.4% capacity retention over 1400 cycles at a charging rate of 1 C. Importantly, we demonstrate that the asymmetric sulfur reaction mechanism that involves formation of polysulfide intermediates, as revealed by operando X-ray absorption spectroscopy, accounts for the high reaction kinetics at such temperature wherein the thermal management can be greatly simplified by using water as the heating media.
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Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-17
·
IF 36.3
Wang Hao,Ding Jiheng,Zhao Hongran,Chu Qinchao,Zhu Jin,Wang Jinggang
Renewable 2,5-furandicarboxylic acid-based polyesters are one of the most promising materials for achieving plastic replacement in the age of energy and environmental crisis. However, their properties still cannot compete with those of petrochemical-based plastics, owing to insufficient molecular and/or microstructure designs. Herein, we utilize the Ti 3 C 2 T x -based MXene nanosheets for decorating carbon nanotube (CNT) and obtaining the structurally stable and highly dispersed dendritic hetero-structured MXene@CNT, that can act as multi-roles, i.e., polycondensation catalyst, crystal nucleator, and interface enhancer of polyester. The bio-based MXene@CNT/polybutylene furandicarboxylate (PBF) (denoted as MCP) nanocomposites are synthesized by the strategy of “in situ catalytic polymerization and hot-pressing”. Benefiting from the multi-scale interactions (i.e., covalent bonds, hydrogen bonds, and physical interlocks) in hybrid structure, the MCP presents exceptional mechanical strength (≈101 MPa), stiffness (≈3.1 GPa), toughness (≈130 MJ m −3 ), and barrier properties (e.g., O 2 0.0187 barrer, CO 2 0.0264 barrer, and H 2 O 1.57 × 10 −14 g cm cm −2 s Pa) that are higher than most reported bio-based materials and engineering plastics. Moreover, it also displays satisfactory multifunctionality with high reprocessability (90% strength retention after 5 recycling), UV resistance (blocking 85% UVA rays), and solvent-resistant properties. As a state-of-art high-performance and multifunctional material, the novel bio-based MCP nanocomposite offers a more sustainable alternative to petrochemical-based plastics in packaging and engineering material fields. More importantly, our catalysis-interfacial strengthening integration strategy opens a door for designing and constructing high-performance bio-based polyester materials in future.
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JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 27
·12885-12898
·
IF 3.5
Zhu Lei,Lu Hongye,Wang Ran,Zhang Jianqiang,Wei Kangxing,Li Xiaofang
Removing emulsified oil from surfactant-polymer-flooding (SPF) oily sewage is a tough problem during oil field exploitation as the viscosity and emulsification degree of the oily sewage dramatically increased with the addition of surfactant and polymer in the recovery process. Herein, alkylated chitosan (CS-NaOH) sponges with uniform porous structure were prepared by freeze-drying and water bath heating in sodium hydroxide solution. With the superhydrophilicity and negative surface charges, the CS-NaOH sponges exhibited excellent SPF oily sewage separation performance by means of the aggregation-induced demulsification mechanism. Especially, the 3 wt% CS-NaOH sponges showed the SPF oily sewage separation performance with separation efficiency as high as 98.11% and separation flux up to 12,100 L·m −2 ·h −1 ·bar −1 . Furthermore, the acetyl group in the chitosan molecule was converted to amino group through the deacetylation reaction triggered by alkalization, resulting in more intermolecular hydrogen bonds formed in CS-NaOH sponges. Therefore, the CS-NaOH sponges possessed extraordinary stability in comparison to the CS sponges without alkalization treatment, including ultrahigh compressibility, superior fatigue resistance and ranking chemical stability, which provided a guarantee for the subsequent long-term practical application. Graphical abstract
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