Nature Communications
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2023
·Vol. 14
·期 1
·1-12
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IF 16.6
Yu Yan,Lin Runfeng,Yu Hongyue,Liu Minchao,Xing Enyun,Wang Wenxing,Zhang Fan,Zhao Dongyuan,Li Xiaomin
The construction of mesoporous Janus nanoparticles (mJNPs) with controllable components is of great significance for the development of sophisticated nanomaterials with synergistically enhanced functionalities and applications. However, the compositions of reported mJNPs are mainly the functionally inert SiO 2 and polymers. The universal synthesis of metal-compound based mJNPs with abundant functionalities is urgently desired, but remains a substantial challenge. Herein, we present a hydrophilicity mediated interfacial selective assembly strategy for the versatile synthesis of metal-compound based mJNPs. Starting from the developed silica-based mJNPs with anisotropic dual-surface of hydrophilic SiO 2 and hydrophobic organosilica, metal precursor can selectively deposit onto the hydrophilic SiO 2 subunit to form the metal-compound based mJNPs. This method shows good universality and can be used for the synthesis of more than 20 kinds of metal-compound based mJNPs, including alkali-earth metal compounds, transition metal compounds, rare-earth metal compounds etc. Besides, the composition of the metal-compound subunit can be well tuned from single to multiple metal elements, even high-entropy complexes. We believe that the synthesis method and obtained new members of mJNPs provide a very broad platform for the construction and application of mJNPs with rational designed functions and structures.
研究领域:
材料科学
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纳米技术
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化学
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DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Lingrui Cui,Xu Liu,Mannian Ren,Jun Xu,Fahai Cao
Nickel and vanadium in crude oil adversely affects the quality of petroleum coke and refining process. Polymer brushes bearing high-density ligands have shown promising nickel removal ability. In this work, submicron polybutadiene (PB) grafted by aminodithio- carbamate acrylamide (PAMDTC@PB) was prepared and characterized by the infrared spectroscopy, dynamic light scattering, and elemental analysis. Based on results of molecular simulation, PAMDTC was selected as ligand molecule at first. Then the nickel and vanadium removal rates by PAMDTC@PB and traditional polyacrylic acid brushes (PAA@PB) were evaluated through the electric desalination process, both in the model and real oil samples. The result shows that S atom in AMDTC is most likely to chelate with metal porphyrin compounds and AMDTC molecule presents highest chelating activity. Compared with PAA@PB, the removal rate of Ni and V porphyrin compounds with the aid of PAMDTC@PB increases significantly, with an optimized removal rate of 46.91 % and 56.81 %. To achieve better metal removal efficiency and higher utilization rate of prepared polymer brushes, sodium dimethyl dithiocarbamate (SDD) is introduced into the electric desalination process as a adjuvant. The results indicate that the addition of SDD leads to a increment of 10–30 % to the removal rate of Ni and V and a reduction of brush dosage by 200–400 ppm in the electric desalination process, exhibiting great potential of industrial applications of novel desalination process with adjuvant.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
Biosensors-Basel
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2022
·Vol. 12
·期 11
·989
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IF 5.743
Aiting Cai,Luxia Yang,Xiaoxia Kang,Jinxia Liu,Feng Wang,Haiwei Ji,Qi Wang,Mingmin Wu,Guo Li,Xiaobo Zhou,Yuling Qin,Li Wu
An electrochemical-DNA (E-DNA) sensor was constructed by using DNA metallization to produce an electrochemical signal reporter in situ and hybridization chain reaction (HCR) as signal amplification strategy. The cyclic voltammetry (CV) technique was used to characterize the electrochemical solid-state Ag/AgCl process. Moreover, the enzyme cleavage technique was introduced to reduce background signals and further improve recognition accuracy. On the basis of these techniques, the as-prepared E-DNA sensor exhibited superior sensing performance for trace ctDNA analysis with a detection range of 0.5 fM to 10 pM and a detection limit of 7 aM. The proposed E-DNA sensor also displayed excellent selectivity, satisfied repeatability and stability, and had good recovery, all of which supports its potential applications for future clinical sample analysis.Keywords:DNA metallization;ctDNA;HCR;Exo Ι;E-DNA sensor
研究领域:
生物化学
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分析化学
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纳米技术
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分子生物学
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DOI
PubMed
高影响因子
CHEMICAL PHYSICS
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2024
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IF 2
Chuang Li,Lidong Dai,Haiying Hu,Meiling Hong
High-pressure vibrational and electrical transport behaviors of cuprous oxide were systematically investigated in a diamond anvil cell through in-situ Raman spectroscopy and electrical conductivity measurements under different hydrostatic environments up to 25.3 GPa. Upon compression, Cu 2 O undergoes a series of structural transformations from Cu 2 O–I to Cu 2 O–Ia to Cu 2 O–Ib to Cu 2 O–II to Cu 2 O–III phases at the respective pressures of 1.7(2), 10.3(2), 12.9(3) and 21.0(2) GPa under non-hydrostatic condition. Meanwhile, the metallization of Cu 2 O at 19.5(3) GPa is well characterized by the variable-temperature electrical conductivity experiments. Under hydrostatic condition, the pressure delay of 0.6–1.6 GPa is detected in the phase transitions from Cu 2 O–Ia to Cu 2 O–Ib to Cu 2 O–II to Cu 2 O–III phases. Upon decompression, one huge discrepancy is observed in the Raman spectra and electrical conductivity before and after the metallization, which indicates the irreversibility of phase transitions under different hydrostatic environments.
研究领域:
材料科学
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物理学
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DOI
高影响因子
APPLIED PHYSICS LETTERS
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2017
·Vol. 110
·期 12
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IF 3.411
Zhuang YuKai,Dai LiDong,Wu Lei,Li HePing,Hu HaiYing,Liu KaiXiang,Yang LinFei,Pu Chang
This report presents a pressure-induced permanent metallization for MoS 2 under non-hydrostatic conditions. Impedance and Raman spectra were measured to study the pressure-induced structural and electronic transformations of MoS 2 at up to ∼25 GPa in diamond anvil cells under both non-hydrostatic and hydrostatic conditions. The results show evidence for isostructural hexagonal distortion from 2 Hc to 2 Ha and metallization at ∼17 GPa and ∼20 GPa under non-hydrostatic and hydrostatic conditions, respectively. Interestingly, the metallization is irreversible only under non-hydrostatic compression. We attribute this phenomenon to the incorporation of molecules of pressure medium between layers, which mitigate compressed stress and reduce interlayer interaction.
研究领域:
材料科学
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物理学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2019
·
IF 7.015
Liang Shen,Ming Yi,Lian Tian,Fangqian Wang,Chun Ding,Shipeng Sun,Ang Lu,Li Su,Yan Wang
Membrane-based forward osmosis (FO) technology has attracted increasing interest in the field of water treatment due to its high economical and separation efficiency. However, the availability of a FO membrane with superior separation and antifouling properties is still the critical issue for its real application in wastewater purification. In this work, novel thin-film composite (TFC) membranes are developed by surface ionization with various metal ions and subsequent metallization with the assistance of pre-grafted polyethyleneimine (PEI) and N -containing organic phosphonic acid (OPA), where the latter provides abundant and stable complexing sites. The grafting of hydrophilic PEI/OPA and the attachment of silver atoms endow the resulting membrane a dual defensive and offensive functionality associated with anti-adhesive property and antibacterial activity, respectively. Compared with the control TFC membrane, the surface-modified membranes show significantly improved anti-adhesive property against bovine serum albumin (BSA) and antibacterial property against S. aureus and E. coli bacteria, and thereby improved antifouling property towards the local lake water. Additionally, compared with the silver-metalized TFC membranes prepared by the direct method or indirect PEI binding, the silver-metalized membrane prepared by the indirect OPA binding exhibits a much higher silver loading (34.38 μg/cm 2 ), as well as better, more stable and long-term antibacterial property. Moreover, compared with the control membrane, the modified membranes also have much higher water fluxes (87–141% increase) and comparable or even lower reverse salt fluxes. The influences of the metal ion type used for ionization and the method used for metallization are systematically investigated.
研究领域:
材料科学
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环境工程
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水处理技术
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DOI
高影响因子
Journal of Materials Chemistry C
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2025
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IF 5.1
Yu Zhou,Jinxu Zhao,Xiansheng Li,Bin Zhao,Gang Pei,Jianming Zheng,Chunye Xu
Polyaniline (PANI) has the potential to control infrared emissivity but suffers from insufficient modulation. We mitigate this deficiency by employing metal compound doping to modify the structure and composition of PANI. The blackbody radiation-weighted emissivity modulation (Δε) in the 8–14 μm band increases from 0.055 without doping to 0.524 with manganese (Mn) doping. Thermal imaging confirms the remarkable infrared modulation of metal-doped PANI films. These results demonstrate the feasibility of using metal-doped PANI films for infrared thermal control applications and are expected to be used for innovations in smart thermal management.
研究领域:
材料科学
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红外技术
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智能材料
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2024
·
IF 6.3
Peng Sun,Xixun Shen,Pei Xu,Wei Huang,Qunjie Xu
At present, the electroless copper is widely used to achieve the hole conductivity in printed circuit boards (PCBs), but this process contains carcinogenic formaldehyde and uses the precious metals for activation. Here, the conductive polyaniline as a seed layer of PCB is attempted to achieve the hole metallization. The polyaniline is formed on the hole through an in-situ oxidation polymerization method. The formation process of polyaniline was analyzed by SEM, FTIR, and XPS and an uniform polyaniline film with spherical cluster is revealed. The deposition behavior of copper on the polyaniline layer is analyzed by the LSV and Tafel where the deposition potential of Cu is about −0.18 V. The filling tests showed that the copper super-filling can be achieved on the polyaniline layer and the filling time is about 150 min and 90 min for the blind hole with a depth to width ratio of 0.75 and of 0.67, respectively. Thermal shock experiments showed that the copper layer on the polyaniline has good adhesion. These results demonstrate that the polyaniline can serve as an effective seed layer instead of the electroless copper to achieve the hole metallization, which provides a new solution for exploring friendly hole metallization processes for PCB.
研究领域:
材料科学
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电子工程
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环境科学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
·
IF 7.46
Yuting Wang,Xiaoqiong Fu,Tianqi Wang,Feng Li,Dan Li,Ying Yang,Xiangting Dong
In this work, a Cu 2 ZnSnS 4 (CZTS)-based gas sensor incorporated by polyoxometalate(POMs) electron acceptor were synthesized by hydrothermal method . For the first time we investigated on the application of CZTS in NO 2 sensor and the influence of POMs incorporating on gas sensing performances of CZTS sensor. As a result, the gas sensing response could be remarkably improved to 6.12 times by incorporating POMs compared with pure CZTS. This is mainly attributed to introducing POMs into CZTS could reduce electron-hole recombination and facilitate electrons transfer. The research results exhibit the highest gas sensing response of CZTS-based gas sensor up to now. This research reveals a new idea for developing high-performance gas sensors based on CZTS by introducing POMs.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
Nanoscale Advances
·
2023
·Vol. 5
·期 11
·2986-2993
·
IF 4.7
Peng Shen,Yuqian Liu,Xiaojun Qu,Mingsong Zhu,Ting Huang,Qingjiang Sun
Due to their appealing properties, nanomaterials have become ideal candidates for the implementation of computing systems. Herein, an optical keypad lock based on a Förster resonance energy transfer (FRET) nanodevice is developed. The nanodevice is composed of a green-emission quantum dot with a thick silica shell (gQD@SiO2) and peripheric blue-emission quantum dots with ultrathin silica spacer (bQD@SiO2), on which 5,10,15,20-tetrakis(4-sulfophenyl)porphyrin (TSPP) is covalently linked. The nanodevice outputs dual emission-based ratiometric fluorescence, depending on the FRET efficiency of bQD–porphyrin pairs, which is highly sensitive to the metalation of TSPP: values are 59.7%, 44.8%, and 10.1% for bQD–Zn(II)TSPP, bQD–TSPP, and bQD–Fe(III)TSPP pairs, respectively. As such, by using the competitive chelation-induced transmetalation of TSPP, the nanodevice is capable of implementing a 3-input keypad lock that is unlocked only by the correct input order of Zn(II) chelator, iron ions, and UV light. Interestingly, the reversible transmetalation of TSPP permits the reset (lock) operation of the keypad lock with the correct input order of ascorbic acid, Zn(II), and UV light. Application of the nanodevice is exemplified by the construction of paper and cellular keypad locks, respectively, both of which feature signal readability and/or high resettability, showing high potential for personal information identification and bio-encryption applications.
研究领域:
材料科学
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生物医学工程
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化学
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产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Xiangdong Li,Kangchi Zhang,Wentao Liang,Cheng Zhong,Di Mai,Azizur Rahman,Xiaoyu Sun,Rucheng Dai,Zhongping Wang,Qiang Wu,Zengming Zhang
Recently, hydrogen sulfide (H2S) and phosphine (PH3) have attracted great attention since the observation of superconducting transitions with high crucial temperatures under high pressure, which inspired subsequent investigations of the superconductivity of nonmetallic hydrides. Here, we report the successful photochemical and thermal syntheses of a series of novel H2S–PH3–H2 ternary hydrides with varying H2S and PH3 molar ratios. Raman, infrared, UV–visible absorption spectra, and electrical transport measurements are employed to investigate the chemical reaction and electronic structure transformation under high pressure. The pressure-induced polymerization of PH3 can be confirmed in H2S–PH3–H2 by Raman and infrared spectra, and the polymerization product, P4H6, can be recovered to ambient pressure; additionally, the polymerization pressure of PH3 is evidently hampered with increasing H2S concentration. Furthermore, it has been found that low temperatures can significantly inhibit the pressure-induced polymerization of PH3. The formation of Hittorf’s phosphorus is experimentally confirmed upon unloading pressure from 100 GPa to ambient pressure, which strongly implies the decomposition of P4H6 under high pressure. The H2S–PH3–H2 molecule gradually turns red and is eventually opaque following compression, which is consistent with the red shift of the UV–visible absorption spectra. Furthermore, synchrotron infrared absorption spectra and electrical transport examined above 65 GPa indicate the insulator-to-metal transition of H2S–PH3–H2 caused by dehydrogenated polymerization of P4H6 to Hittorf’s phosphorus.
研究领域:
材料科学
·
凝聚态物理
·
超导研究
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产品关联
DOI
高影响因子
BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
·
2024
·Vol. 38
·期 5
·1251-1260
·
IF 1.3
Da-Chuan Ge,Wen Zhu,Yu-Xuan Li,Feng Zhang,Yun Chen,Jian-Hua Sun,Zhao-Xi Wang
Perovskite-like compounds have attracted great attention because of their good properties, such as electrical, optical, and magnetic properties, etc. Herein, a new perovskite-like anionic dicyanamidometallate, namely (Bu3MeP)[Ni(dca)3] (1) (Bu3MeP = tributylmethylphosphine cation, dca = dicyanamide), was synthesized and structurally characterized by elemental analysis, IR spectrum, thermogravimetric analysis, and single-crystal X-ray diffraction. The compound crystallizes in the tetragonal crystal system with the chiral space group P43212, and exhibits a three-dimensional anionic dicyanamidometallate framework from Ni2+ units bridged by dicyanamides, in which tributylmethylphosphine cations are accommodated in the voids. The butyl groups present two conformations in the tributylmethylphosphine cation, resulting in chirality character occurred in compound 1. Variable-temperature magnetic susceptibility analysis indicates that weak ferromagnetic interaction exists between the nickel(II) ions coupling by μ1,5-bridings.
KEY WORDS: Perovskite-like, Dicyanamidometallate, Crystal structure, Magnetic properties
Bull. Chem. Soc. Ethiop. 2024, 38(5), 1251-1260.
DOI: https://dx.doi.org/10.4314/bcse.v38i5.5
研究领域:
材料科学
·
化学
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DOI
高影响因子
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