INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Lei Wang,Cunzhi Zhang,Hui He,Hongxiang Zhu,Wei Guo,Shile Zhou,Shuangfei Wang,Joe R. Zhao,Jian Zhang
A novel cellulose-based colorimetric sensor (DAC-Tu) with N, S sites for Ag + was prepared. The DAC-Tu exhibited excellent selectivity and sensitivity for Ag + with a naked eyes color change from white to black in mixed metal ions aqueous solutions. The naked-eye in-situ detection limit of DAC-Tu for Ag + was 10 −6 mol/L within 10 min. The cellulose matrix and the grafted functional groups ( C S, NH 2 ) of DAC-Tu all contributed to the low naked-eye in-situ detection limit. The mechanism of the visual recognition of DAC-Tu sensor for Ag + was proposed, the N and S atoms of DAC-Tu preferentially coordination chelated with Ag + to form N Ag, S Ag, and Ag 2 S, and enriched on the cellulose matrix, thus the DAC-Tu presented different color change in response to different concentrations of Ag + . The as-prepared DAC-Tu colorimetric sensor showed a great application prospect for in-situ naked eyes detection of Ag + .
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Rizhao Ou,Zexin Zeng,Xutao Ning,Bin Zeng,Chaofu Wu
Sandwich-type hybrid consisting of N-doped ZnO/N-doped graphene/ N-doped ZnO (NZ/NG/NZ) is fabricated via solution reaction and subsequent carbonization using oligoaniline and graphene oxide (GO) as precursors mixed with zinc acetate solution. Oligoaniline serves as a spacer material by participating in the π-π interaction with GO nanosheets and prevents their restacking. The oligoaniline coordinates with Zn 2+ ions and along with carbonization, it results in a sandwich-type structure of N-doped ZnO/graphene/ZnO composite. The obtained N-doped ZnO/graphene/ZnO composite showed an excellent photocatalytic performance. Remarkably, the sandwich-type structure provides plenty of active sites in which N-doped ZnO has the narrowed bandgap with a visible light response and the N-doped carbon matrix facilitates effective photoinduced electron-hole separation. The strategy presented here offers an effective method to prepare such sandwich-structured N-doped metal oxide/graphene composites for photocatalysis or energy storage.
✓ 已验证
DOI
高影响因子
Materials Today Energy
·
2021
·
IF 7.311
D. Zhao,Q. Jiang,Y. Jia,J. Zhou,N. Zheng,D. Hu,Y. Ma
An ideal organic thermoelectric (TE) material should possess features that would be low-cost, of high performance, easy to process, and non-toxic, but it is rare to find materials that meet these requirements. Naphthalenediimide (NDI), as a common and cheap industrial pigment, displays strong intermolecular inaction and good n-type semiconductor character. However, due to the strong interaction of π-π and hydrogen bond interaction, NDI usually exhibited poor solubility, making it difficult to process in solution. Herein, we demonstrated that the unsubstituted NDI could form a suspension mixed with NDI radical anion state by phenyl lithium doping, which consequently can be used to prepare dense film by drop-casting for TE application. More importantly, by optimizing the doping ratio, the TE film reached electrical conductivity of 0.11 S cm −1 and Seebeck coefficient of −1289 μV K −1 . Eventually, a high power factor up to 18.8 μW m −1 K −2 and ZT value of 0.053 was obtained, which is one of the best TE performance achieved in n-type NDI-based TE materials. This work suggests the simple strategy of utilizing commercially mature molecules to develop organic TE materials with high performance.
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Guoliang Lv,Zihang Huang,Li Qin,Pengwei Tan,Yuanyuan Luo,Guotao Duan
The exceptional specificity of biological olfactory sensing has motivated efforts to tackle the persistent challenge of low selectivity in chemiresistive-type gas sensors. In this paper, we draw inspiration from biological recognition mechanisms for organophosphonates and develop n-type hydroxylated reduced graphene oxide (HRGO) as a molecular olfactory sensor for the sarin surrogate, methyl dimethylphosphonate (DMMP). HRGO is synthesized through a controlled selective reduction of graphene oxide, converting most of the oxygen-containing groups into hydroxyl groups. The corresponding sensor demonstrates ultrahigh selectivity for DMMP at room temperature, with a fast response time of approximately 5 seconds and a detection limit as low as 5 ppm. Furthermore, we grafted calix[6]arene onto HRGO via van der Waals forces, significantly enhancing the Schottky contact between HRGO and the Au electrode, which in turn improved the sensor's stability. Additionally, the introduction of the hydrophobic aromatic rings in calix[6]arene boosted the sensor's humidity resistance of low-concentration detection resolution. A possible bionic sensing mechanism was then proposed, in which DMMP was first adsorbed by the electron-rich conjugated benzene rings of n-type HRGO, followed by phosphonylation at the hydroxyl sites. This work offers valuable insights into the field of molecular olfactory sensing as well as artificial olfaction.
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Jia Kong,Jiaxing Zhang,Yirui Zhang,Huanxin Xue,Xin Guo,Nan Wang,Ziyi Gao,Menghuan Sun,Yinqiang Xia,Yuefei Wang,Hao Ren,Peng Yang,Man Shing Wong
Amyloid β (Aβ) aggregates are a neuropathological hallmark of Alzheimer’s disease (AD). Despite being a prime therapeutic target, past Aβ-targeted trials have primarily focused on its hydrophobic core, yielding unsatisfactory results. In this study, we aligned the structural features of Aβ42 filaments and found that the hydrophobic core and C-terminal region show notable similarities, and the N-terminal region exhibits considerable disorder. Through residue substitution studies, we identified the His13-His14 motif at the disorder–order boundary as particularly effective in mitigating Aβ42’s fibrillation pathway and neurotoxicity, alongside the Phe19-Phe20 hydrophobic core, presenting a promising target for therapeutic intervention. We then designed a series of peptide mimetics based on these Aβ features. Among them, peptide mimetic III, with the sequence of Phe-His-His, exhibited an assembly of antiparallel β-sheet structures primarily driven by hydrogen bonding, showcasing favorable rheological properties and biosafety. Interestingly, mimetic III predominantly patches the N-terminal region of Aβ42 fibrils through hydrogen bond-dominated interactions, effectively modulating aggregation and neurotoxicity in a “like-interacts-with-like” manner. Furthermore, mimetic III eliminates the risk of Aβ42 aggregating into neurotoxic intermediates, rescuing both human and mouse-derived neuronal cells from Aβ42-induced toxicity. Our study demonstrated that peptide mimetics targeting the N-terminal region of Aβ42 is a promising alternative for modulating amyloidosis-related neurotoxicity.
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2013
·
IF 3.479
Chao Zhong,Chunming Wang,Fan Huang,Honghua Jia,Ping Wei
In this article, a novel and high efficient solvent, tetra - n -Butylammonium Hydroxide (TBAH), was used for dissolution and isolation of straw cellulose from wheat straw. The composition analysis with gas chromatography (GC) and the spectroscopic characterization analysis conducted by X-Ray diffraction (XRD)/Fourier transform infrared spectroscopy (FTIR) indicated that straw cellulose can be directly dissolved and isolated by TBAH without derivatization . The investigation on the properties of straw cellulose isolation was based on the results of single factor experiments and orthogonal experiments, with optimum conditions for straw cellulose isolation being obtained as follow: reaction temperature 60 °C, reaction time 40 min, concentration of TBAH 50% and ratio of TBAH to straw 10:1 (m/m). In addition, as a solvent for cellulose, TBAH could be recycled several times with high activity being retained.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Fuhao Liu,Zhiguo Yuan,Sen Zhao,Quande Che,Qian Ma,Junpeng Wang
Tetragonal BiVO 4 nanorod array exhibits excellent carrier transport properties, but due to its p-type conductivity, it can only be used as a photocathode. In this study, an n-type tetragonal BiVO 4 nanorod array doped with molybdenum was successfully fabricated on fluorine-doped tin oxide (FTO) glass substrates via the hydrothermal method. The doping of Mo and its corresponding concentration were accurately ascertained through X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma (ICP) techniques. Computational simulations revealed that Mo doping induces a shallow donor level beneath the conduction band of BiVO 4 . Notably, the structure and morphology of BiVO 4 did not undergo significant changes after Mo doping, but the conductivity type and conductivity of the surface samples were greatly improved as evidenced by Mott-Schottky and conductive atomic force microscopy (C-AFM) measurements. Impressively, the onset potential for oxygen production when utilized as a photoanode was merely 0.2 V vs RHE. More importantly, although its conduction band position is slightly lower than the hydrogen production potential, the doped sample still demonstrated outstanding activity in water splitting for hydrogen generation.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Hongtao Wang,Yueyue Li,Chenchang Wang,Yuan Li,Jihao Bai,Yueying liu,Linsheng Zhou,Fengmin Liu,Kengo Shimanoe,Geyu Lu
As one of the most promising “next generation” alcohol fuels, n-pentanol brings convenience to our lives as well as challenges. Realizing real-time monitoring of n-pentanol is important to the health of workers in chemical plants. In this work, a series of Au nanoparticles functionalized ZnO nanorods were prepared by a facile one-step solvothermal method. The electronic sensitization and chemical sensitization of Au nanoparticles regulate the thickness of initial depletion layer of ZnO nanorods and increase the amount of adsorbed oxygen species on the surface. The gas-sensing results showed that 2 mol% Au nanoparticles functionalized ZnO nanorods exhibited the highest response of 71.8 to 4 ppm n-pentanol at 260 °C, and showed much higher response than other various saturated monohydric alcohols with different carbon chain lengths. Moreover, the sensor possessed ultra-fast response speed (1 s), excellent stability, and a certain ability of moisture resistance. The sensor was heated at 350 °C to promote the desorption of n-pentanol. The surface depletion layer model and energy band theory were used to explain the enhanced gas-sensing performance. This work provides a suitable candidate for real-time monitoring of n-pentanol in chemical plants.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2018
·
IF 3.794
Rui Liu,Jin-le Lan,Xing Tan,Yao-chun Liu,Guang-kun Ren,Chan Liu,Zhi-fang Zhou,Ce-wen Nan,Yuan-hua Lin
The Bi 2 O 2 Se-based compounds with an intrinsically low thermal conductivity and relatively high Seebeck coefficient are good candidates for thermoelectric application. However, the low electrical conductivity resulted from carrier concentration of only 10 15 cm −3 for pristine material, which is too low for optimized thermoelectrics. As a result, the carrier concentration optimization of Bi 2 O 2 Se is important and useful to achieve higher power factor. In this work, the effect of Ge-doping at the Bi site has been investigated systematically, with expectations of carrier concentration optimization. It is found that Ge doping is an efficient method to increase carrier concentration. Due to the largely increased carrier concentration via Ge doping, the room temperature electrical conductivity rises rapidly from 0.03 S/cm in pristine sample to 133 S/cm in x = 0.08 sample. Combined with the intrinsically low thermal conductivity , a maximum ZT value of 0.30 has been achieved at 823 K for Bi 1.92 Ge 0.08 O 2 Se, which is the highest ZT value for Bi 2 O 2 Se-based thermoelectric materials .
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Tian Xu,Guangjin Wang,Cong Liang,Mu Pan
Nitrogen shows a positive influence on the ORR activity of certain catalysts, such as N-doped carbon and N-doped ZrO 2 . In this paper, we report a method to dope nitrogen into La 2 Zr 2 O 7 nanoparticles by the sol-gel process combined with ammonolysis. XPS results indicate that the nitrogen content in La 2 Zr 2 O 7 is approximately 0.92 at.%. Compared to the ORR activity of La 2 Zr 2 O 7 , ORR activity of the N-doped La 2 Zr 2 O 7 is considerably enhanced. Density functional theory (DFT) calculations indicate that the band gap is reduced in N-doped La 2 Zr 2 O 7 , which may be one of the factors that contribute to the improvement.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2015
·
IF 3.091
Lin Zhang,Gang Qian,Zongjian Liu,Qun Cui,Haiyan Wang,Huqing Yao
Adsorption equilibrium and kinetic data is essential for the design of an adsorption process. In this work, the adsorption isotherms of n-pentane/isopentane on zeolitic imidazolate framework material (ZIF-8) were measured at 308, 343 and 373 K over the pressure range from 0 to 9.7 kPa by a gravimetric system. The equilibrium adsorption capacity at 303 K and 9.7 kPa is 0.2504 g g −1 for n-pentane and 0.1439 g g −1 for isopentane. Langmuir model was used to fit the adsorption isotherms. The adsorption kinetics of n-pentane/isopentane was studied at 308 K in the pressure range from 0 to 69.9 kPa. The data was well fitted with linear driving force model (LDF) model. The adsorption rate constant of n-pentane is from 0.0019 to 0.0326 s −1 , which is higher than that of isopentane, represented 0.0007–0.0036 s −1 . The adsorption selectivity of n-pentane/isopentane on ZIF-8 was contrast by the measurement of the binary breakthrough experiments at 343 K, 363 K and 393 K in the partial pressure of 7 kPa. When the adsorption temperature is 363 K, the adsorption selectivity of n-pentane/isopentane on ZIF-8 reaches the maximum 55. Compared with 5A molecular sieve, the desorption temperature of n-pentane on ZIF-8 was analyzed by temperature-programmed-desorption (TPD) method. The peak temperature of n-pentane desorption on ZIF-8 is 361 K. However are 392 K and 443 K on a 5A molecular sieve. Thus, ZIF-8 is more selective or preferential adsorption for n-pentane in comparison to isopentane molecules at low temperature.
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Chen Li,Ke Liu,Shang Peng,Qi Feng,Dequan Jiang,Ting Wen,Hong Xiao,Binbin Yue,Yonggang Wang
Temperature- or pressure-driven n–p conduction-type switching has been described as an emerging phenomenon for potential applications as transistors, switches, and memory devices. The key challenge in the development of such n–p conduction-type switching materials is to establish maneuverable and controllable methods to achieve easy convertibility and nonvolatility. Herein, we report the first example of rewritable pressure and temperature dual-controlled n–p conduction-type switching in marcasite-type CrSb2. At room temperature, CrSb2 exhibits an unexcepted pressure-driven n–p conductivity-type switching around 12 GPa accompanied by a marcasite-to-arsenopyrite structural transition and a semiconductor-to-metal transition. The dramatic conduction-type switching is irreversible after pressure releasing at room temperature but reversible by annealing at a relatively low temperature (>80 °C). Accordingly, a multicycle bistability switching process is established under the dual regulation of both pressure and temperature. The underlying structure–property mechanism is revealed by in situ/ex situ characterization and analyses of the atomic-level microstructure, local lattice distortion, and residual stress induced by compression. This demonstration provides a new platform for the rational design of rewritable temperature/pressure-responsive photoelectric conversion devices.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）