ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 49
·2206705
·
IF 19.924
Lili Wang,Wanbo Li,Yuxin Song,Wanghuai Xu,Yuankai Jin,Chao Zhang,Zuankai Wang
Developing robust technologies to harvest energy from ambient environments is critical to applications in self-powered electronics. As a promising candidate, droplet-based electricity generators with transistor-inspired architecture, which consist of electrodes and dielectric material, have manifested superior capacity to gain sustainable energy from water. Despite extensive achievement, these devices are significantly limited by insufficient flexibility and unstable performance owing to the presence of inevitable mechanical abrasion, chemical corrosion, and interfacial detachment of electrode and dielectric material. Here, a facile approach is reported to construct a monolithic integrated droplet-based electricity generator (MI-DEG) device that enables high flexibility and robust electrical performance. The key to such flexibility and robustness of the MI-DEG device lies in the meticulous utilization of a thermal fusion strategy that makes specially-designed polymer electrodes and dielectric material seamlessly integrated together. It is demonstrated that MI-DEG exhibits stable electrical output with negligible attenuation under long-term mechanical deformation and abrasion, as well as retains over 60% of initial electrical output under harsh corrosive environments, as opposed to the complete failure of conventional counterpart. This study provides a hopeful pathway for the rational design of flexible and robust electricity generator, making it a step closer in the practical applications.
研究领域:
能源材料
·
纳米技术
·
电子工程
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DOI
高影响因子
Biomass Conversion and Biorefinery
·
2021
·Vol. 13
·期 12
·10701-10710
·
IF 4.987
Zeng Qin,Du Zhenyu,Luo Ligang
In this study, different bimetallic (Ru, Pd, and Pt) catalysts over a variety of supports (activity carbon, γ-Al 2 O 3 , TiO 2 , HZSM-5) were employed to improve the kraft lignin depolymerization process using isopropanol as in situ hydrogen source. The effect of catalysts was firstly investigated, which suggested that 1wt%Ru-1wt% Pd/HZSM-5 promoted the hydrogenolysis and hydrodeoxygenation effect on conversion of kraft lignin (95.86 wt%) and the selectivity of aliphatic alcohol (26.92 wt%) and hydrocarbon monomers (35.73 wt%), respectively. The effect of temperature and reaction time were also discussed, which indicated that the high temperature (250 to 310 °C) promoted the hydrogenolysis process; while the temperature is higher than 310 °C, the repolymerization process was appeared, leading to the decreasing yield of total monomers. For the influence of reaction time, it was noted that the optimal reaction time to acquired high yield and selectivity of aliphatic alcohol and hydrocarbon monomer was 120 min. It was also conducted FTIR and 2D HSQC NMR analysis to understand the effective depolymerization of the major linkages with attacked by the Ru-Pd/HZSM-5 catalyst, which was corresponding with the results with GC–MS. Graphical abstract
研究领域:
化学工程
·
催化科学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 6
·3509-3516
·
IF 11.301
Peng Wang,Weidong Wei,Ziqiang Li,Wei Duan,Huilong Han,Qing Xie
To endow strain sensors with superhydrophobicity may be a promising approach to improve the infrastructure safety in harsh environments. Artificial superhydrophobic strain sensors have exhibited good mechanical robustness and chemical resistance separately. However, a simultaneous demonstration of these characteristics along with superior liquid impalement resistance is still a big challenge. Here, we developed a strain sensor by combining fluorinated PDMS with multi-walled carbon nanotubes (MWCNTs). The key innovation in this research is achieving a multi-fluorination strategy on the PDMS matrix, which enhances the liquid impalement resistance without sacrificing mechanical robustness. Therefore, our strain sensors not only demonstrated superior sensitivity and excellent reproducibility, but also maintained superhydrophobicity after various kinds of destruction (such as toleration of strain up to 200%, man-made destruction using hands or sandpaper, chemical attack, 200 °C thermal attack and high-speed drop/turbulent jet impacts).
研究领域:
材料科学
·
传感器技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yajun Mi,Wu Tong,Yin Lu,Xia Cao,Ning Wang
Currently, combining multimodal perceptual ability with mechanical robustness poses a significant challenge for developing hydrogel-based flexible electronics. Herein, a robust conductive hydrogel was successfully synthesized by introducing cellulose nanocrystals (CNC) as nanofillers and lithium chloride (LiCl) as the conductive component into the copolymer network through a one-pot crosslinking procedure in a water-dimethyl sulfoxide binary solvent. Besides excellent stretchable, self-adhesive, anti-freezing, self-healing, and anti-swelling properties, tunable and reversible optical property was realized due to the polarity-induced microphase separation of the hydrophilic and hydrophobic group in the zwitterionic sulfobetaine chains, enabling cyclic information encryption and decryption. An all-weather wearable sensor array was thus developed for multi-modal sensing of various environmental stimuli, including mechanical, and thermal variations. Specifically, the intensity and spatial distribution of strain can be detected almost in real time within a broad strain range, thus realizing speech recognation, text-to-speech and human electrocardiogram signal acquisition and underwater non-contact sensing functions. Notably, the CPAMD-based triboelectric nanogenerator demonstrates impressive temperature tolerance (−40 °C and 60 °C), and remarkable material identification capability. A non-contact proximity sensing sensor and a foul detection system were thus developed by coupling the piezoresistive, triboelectric and capacitive sensing metrics to serve as an electronic referee for identifying foul in curling. This work provides a valuable reference toward combining excellent mechanical robustness with balanced electrical performance for tactile perception and intelligent sports monitoring.
研究领域:
材料科学
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生物医学工程
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柔性电子学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jingjing Liu,Lei Yao,Fang Zhao,Jingjing Zhang,Jingbo Gong,Jiabin Li,Ya Bian,Yalin Yin,Rui Zhao,Yijia Wang,Wei Wang
The robustness and catalytic activity of superoxide dismutase (SOD) are still the main factors limiting their application in industrial fields. This study aims to further improve the properties of a natural thermophilic iron/manganese dual-domain SOD (Fe/Mn-SODA fused with N-terminal polypeptide) from Geobacillus thermodenitrificans NG80-2 (GtSOD) by modifying its each domain using in-depth in silico prediction analysis as well as protein engineering. First, computational analysis of the N-terminal domain and GtSODA domain was respectively performed by using homologous sequence alignment and virtual mutagenesis. Seven proposed mutation sites favoring increased robustness were screened out for single-point mutants (SPMs) construction. Enzymatic characterization of these SPMs identified the most favorable mutation sites E107 and S265 located in two different domains. Subsequently, the dual-domain site combinatorial mutant (DDSCM) E107L/S265K showed significant superposition effects and additional improvement in catalytic efficiency, with a Kcat/Km value of 145.45 %, 33.66 %, and 60.33 % higher than the wild type (WT), the SPMs E107L and S265K, respectively. Molecular dynamics simulations, structural and surface charge analysis revealed the possible mechanism by which combinatorial mutations improve the robustness and catalytic activity of GtSOD. Furthermore, DDSCM showed more significant resistance to ultraviolet B and various stress than WT, indicating its highly competitive industrial application prospects.
研究领域:
生物化学
·
蛋白质工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Wei Tang,Houjie Yu,Dennis W. Hess,Lianpeng Zhang,Xijuan Chai,Kaimeng Xu,Xionghang Yang,Linkun Xie
Wood is a widely used carbon-storing material, but its applications are constrained by vulnerabilities to water, oil and fire. Existing coatings have limited functionalities, failing to meet the intelligent requirements of modern wood products and constructions. Inspired by bionics, a robust superamphiphobic fire sensing EP/F-POS@Fe3O4 coating was designed on wood substrate, fabricated from functional ferroferric oxide (Fe3O4) particles, tetraethyl orthosilicate (TEOS, hydrolyzed into polysiloxane), 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PFDTMS), and epoxy resin (EP) adhesive. Optimizing the EP content not only enhances coating stability but also engineers surface micronano reentrant structures, endowing the wood with excellent superamphiphobicity (water/oil contact angles >150°). The EP/F-POS@Fe3O4 coating maintains robust hydrophobic and oleophobic properties under sandpaper abrasion, tape peeling, glass bead impact, and knife scratching tests. At the same time, the coating’s effectiveness in reducing the wood’s liquid absorption further confirms its stable water/oil repellency. Importantly, beyond passive flame retardancy, the EP/F-POS@Fe3O4 coating features a breakthrough active fire alarm function: nonconductive under ambient conditions, it acts as a sensor upon flame exposure, exhibiting ultrafast (∼3 s) intelligent visual alarm response and excellent repeatability (>10 cycles), holding potential to mitigate fire risks. Obviously, the EP/F-POS@Fe3O4 coating shows great promise for future applications in wooden architecture and smart furniture.
研究领域:
材料科学
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仿生学
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消防安全工程
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表面工程
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智能涂层
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 10
·1-11
·
IF 5.3
Lu Juan,Li Chao,Guo Yanjia,Feng Yongjia,Song Yujia,Li Ruidan,Tian Li,Wang Jing
Loofah sponge-like carbon nanofibers (LF-Co,N/CNFs) were utilized as a carrier for Ru(bpy) 3 2+ , and then combined with CdS to create a novel solid-state electrochemiluminescence sensor capable of detecting trace amounts of fenpropathrin. LF-Co,N/CNFs, obtained through the high-temperature pyrolysis of ZIF-67 coaxial electrospinning fibers, were characterized by a loofah-like morphology and exhibited a significant specific surface area and porosity. Apart from serving as a carrier, LF-Co,N/CNFs also functioned as a luminescence accelerator, enhancing the system's luminescence efficiency by facilitating electron transmission and reducing the transmission distance. The inclusion of CdS in the luminescence reaction, in conjunction with Ru(bpy) 3 2+ , further boosted the sensor's luminescence signal. The resulting sensor demonstrated a satisfactory signal, with fenpropathrin causing significant quenching of the ECL signal. Under optimized conditions, a linear relationship between the signal quench value and fenpropathrin concentration in the range 1 × 10 –12 to 1 × 10 –6 M was observed, with a detection limit of 3.3 × 10 –13 M (S/N = 3). This developed sensor is characterized by its simplicity, sensitivity, and successful application in detecting fenpropathrin in real samples. The study not only presents a straightforward detection platform for fenpropathrin but also introduces new avenues for the rapid determination of various food contaminants, thereby expanding the utility of carbon fibers in electrochemiluminescence sensors. Graphical Abstract
研究领域:
分析化学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Huihui Zheng,Hongwei Zhou,Bohui Zheng,Chuanjuan Wei,Aijie Ma,Xilang Jin,Weixing Chen,Hanbin Liu
Hydrogels are increasingly used in flexible electronic devices, but the mechanical and electrochemical stabilities of hydrogel devices are often limited under specific harsh conditions. Herein, chemically/physically cross-linked double-network (DN) hydrogels containing binary cations Zn2+ and Li+ are constructed in order to address the above challenges. Double networks of chemically cross-linked polyacrylamide (PAM) and physically cross-linked κ-Carrageenan (κ-CG) are designed to account for the mechanical robustness while binary cations endow the hydrogels with excellent ionic conductivity and outstanding environmental adaptability. Excellent mechanical robustness and ionic conductivity (25 °C, 2.26 S·m–1; −25 °C, 1.54 S·m–1) have been achieved. Utilizing the DN hydrogels containing binary cations as signal-converting materials, we fabricated flexible mechanosensors. High gauge factors (resistive strain sensors, 2.4; capacitive pressure sensors, 0.82 kPa–1) and highly stable sensing ability have been achieved. Interestingly, zinc-ion hybrid supercapacitors containing the DN hydrogels containing binary cations as electrolytes have achieved an initial capacity of 52.5 mAh·g–1 at a current density of 3 A·g–1 and a capacity retention rate of 82.9% after 19,000 cycles. Proper working of the zinc-ion hybrid supercapacitors at subzero conditions and stable charge–discharge for more than 19,000 cycles at −25 °C have been demonstrated. Overall, DN hydrogels containing binary cations have provided promising materials for high-performance flexible electronic devices under harsh conditions.
研究领域:
材料科学
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生物医学工程
·
能源存储
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2014
·Vol. 406
·期 28
·7379-7387
·
IF 3.578
Wang Jing,Liu Shu,Ma Bing,Chen Lina,Song Fengrui,Liu Zhiqiang,Liu Chun-ming
Xanthine oxidase (XOD) catalyzes the metabolism of hypoxanthine and xanthine to uric acid, the overproduction of which could cause hyperuricemia, a risk factor for gout. Inhibition of XOD is a major treatment for gout, and biflavonoids have been found to act as XOD-inhibitory compounds. In this study, ultrafiltration liquid chromatography with photodiode-array detection coupled to electrospray-ionization tandem mass spectrometry (UF-LC-PDA–ESI-MS) was used to screen and identify XOD inhibitors from S. tamariscina . High-performance counter-current chromatography (HPCCC) was used to separate and isolate the active constituents of these XOD inhibitors. Furthermore, ultrahigh-performance liquid chromatography (UPLC) and triple-quadrupole mass spectrometry (TQ-MS) was used to determine the XOD-inhibitory activity of the obtained XOD inhibitors, and enzyme kinetics was performed with Lineweaver–Burk (LB) plots using xanthine as the substrate. As a result, two compounds in S. tamariscina were screened as XOD inhibitors: 65.31 mg amentoflavone and 0.76 mg robustaflavone were isolated from approximately 2.5 g S. tamariscina by use of HPCCC. The purities of the two compounds obtained were over 98 % and 95 %, respectively, as determined by high-performance liquid chromatography (HPLC). Lineweaver–Burk plot analysis indicated that amentoflavone and robustaflavone were non-competitive inhibitors of XOD, and the IC
50 values of amentoflavone and robustaflavone for XOD inhibition were 16.26 μg mL −1 (30.22 μmol L −1 ) and 11.98 μg mL −1 (22.27 μmol L −1 ), respectively. The IC
50 value of allopurinol, used as the standard, was 7.49 μg mL −1 (46.23 μmol L −1 ). The results reveal that the method for systematic screening, identification, and isolation of bioactive components in S. tamariscina and for detecting their inhibitory activity using ultrafiltration LC–ESI-MS, HPCCC, and UPLC–TQ-MS is feasible and efficient, and could be expected to extend to screening and separation of other enzyme inhibitors.
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研究领域:
药理学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
You Chen,Zijing Quan,Wenda Song,Ze Wang,Bo Li,Zhengzhi Mu,Shichao Niu,Junqiu Zhang,Zhiwu Han,Luquan Ren
Membrane-based materials with selective superantiwetting/superwetting surfaces have been applied widely to tackle the concerns of the ever-growing discharge of industrial oily wastewater, as well as frequent oil spill accidents. However, conventional membrane-based separation technologies are inefficient and limited, either by insufficient robustness or by the inadequate anti-oil-fouling property. Herein, a biomimetic superhydrophobic membrane (BSM) with multiscale hierarchical structures (MHSs) was prepared through a method combing self-growth and spray coating. Remarkably, the BSM featured a static water contact angle of 153 ± 0.5°. Accordingly, the BSM possessed highly efficient oil–water separation capability (>95%). In addition, the anti-oil-fouling property and anti-drag capability in the oily seawater of BSM were systematically investigated. In fact, the repellent properties of BSM toward multiple mixtures were attributed to the synergistic effect of both physical structures (biomimetic MHSs) and hydrophobic chemical compositions. Moreover, the BSM demonstrated excellent mechanical robustness (the number of abrasion cycles reached 35) and chemical durability (maintain superhydrophobicity in pH 1–14) through abrasion and strong acid/alkali corrosion tests, respectively. The durability of BSM provided more possibilities for its practical applications. The findings in this work offer a facile yet effective strategy for designing superhydrophobic membranes with excellent physicochemical durability and suggest a great potential value for oil–water separation and drag reduction applications.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yingchen Li,Chao Liu,Hongkun Cai,Xiaoguang Luo,Qinwen Guo,Baoyu Han,Zhihao Hu,Juan Li,Jian Ni,Jianjun Zhang
The successful commercialization of flexible perovskite solar cells (FPSCs) hinges on their long-term stability and scalability. Surface defects and residual stress stand out as the main factors impeding their performance. These elements play a substantial role in causing perovskite instability, which not only undermines the efficiency of FPSCs but also expedites device degradation. In this research, for the first time, aminopropyl double-ended polydimethylsiloxane (AP-PDMS) is employed to passivate the surface of perovskite films. The AP-PDMS spatial symmetric part like “pincers” captures two Pb2+ and forms a hydrogen bond with FA+, thereby effectively relieving the residual stress. Moreover, the hydrophobic siloxane within AP-PDMS acts as a protective barrier, preventing water from penetrating the perovskite. This approach yields high-quality perovskite films characterized by large grain sizes, low defect densities, and excellent crystallinity. Consequently, the enhanced device exhibits excellent moisture resistance stability. The FPSCs obtained a champion power conversion efficiency of 23.32%. More importantly, these FPSCs show the mechanical robustness with T90 > 10,000 bending cycles (bending radius of 5 mm) and operational stability with T80 > 1000 h.
研究领域:
材料科学
·
聚合物化学
·
光伏技术
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纳米技术
·
固体物理
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产品关联
DOI
PubMed
高影响因子
ARCHIVES OF MICROBIOLOGY
·
2025
·Vol. 208
·期 1
·1
·
IF 2.6
Zhong Huichang,Chen Liyi,Liu Weifeng,Tao Yong
Xanthophyllomyces dendrorhous (anamorph form Phaffia rhodozyma ) is a key microbial host for industrial astaxanthin production, where yield depends on both the efficiency of the biosynthetic pathway and overall metabolic robustness. To develop superior industrial strains, we established an efficient evolutionary-enrichment system and an accelerated evolutionary workflow that couples astaxanthin production with cell growth under optimized oxidative stress conditions. This strategy enabled the enrichment of mutants exhibiting both high astaxanthin production and strong industrial fitness. Using this approach, we employed a high astaxanthin-producing X. dendrorhous strain A06 as the parental strain for evolution. After several rounds of screening over 2,000 colonies, we successfully identified the top-performing mutant, TP-4. TP-4 demonstrated a stable 20% increase in astaxanthin production relative to the parental strain, along with faster growth and enhanced fermentation performance. The genome of TP-4 was sequenced, and comparative genomic analysis against the parent strain A06 and a low-astaxanthin-producing control strain, C01, revealed multiple mutations potentially underlying its superior phenotype. These findings provide new insights into the metabolic and genetic basis of astaxanthin overproduction. This work establishes an efficient evolutionary platform for strain improvement and provides a mechanistic understanding of astaxanthin overproduction in X. dendrorhous , laying the groundwork for further optimization and industrial-scale application.
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PubMed
高影响因子
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