ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Ning Zhang,Ting Huang,Peisi Xie,Zhu Yang,Lan Zhang,Xiaoping Wu,Zongwei Cai
The flexible and controlled synthesis of metal–organic framework (MOF)-derived hybrid nanostructures is of great significance in fine tuning of their enrichment performance in large-scale and in-depth phosphoproteome analysis. Herein, a magnetic guanidyl-functionalized MOF hybrid coating with multiaffinity sites, denoted as Fe3O4@G-ZIF-8, was fast fabricated via a one-pot epitaxial growth strategy for the first time and applied for selective and highly efficient enrichment of global phosphopeptides. The intrinsic unsaturated metal sites of ZIF-8 endow the surface-mounted MOF coatings with immobilized metal ion affinity chromatography interaction with multiphosphorylated peptides. The oriented anchoring of bifunctional guanidineacetic acid on the magnetic MOF nanospheres provides additional affinity sites (guanidyl groups) for specific recognition of phosphopeptides by “salt bridge” interaction, as well as active site carboxyl groups for the coordination with the metal ions. The as-prepared Fe3O4@G-ZIF-8 exhibits large surface area (382.5 m2 g–1), good superparamagnetic property (41.6 emu g–1) and stability, and size-exclusion effect (1.73 nm), which can serve as a specific adsorbent for global phosphopeptide analysis with satisfactory selectivity, great detection sensitivity (1 fmol), and rapid magnetic separation. Moreover, the successful application of Fe3O4@G-ZIF-8 for selective capture of both multi- and mono-phosphopeptides from human saliva and serum demonstrated the great potential of magnetic surface-mounted MOF coatings in effective identification of low-abundance phosphopeptides by matrix-assisted laser desorption ionization time-of-flight mass spectrometry from complicated biological matrices.
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PubMed
高影响因子
Nano Energy
·
2021
·
IF 17.881
Xin Wang,Yubing Xu,Yuzhu Pan,Yuwei Li,Ji Xu,Jing Chen,Jun Wu,Qing Li,Xiaobing Zhang,Zhiwei Zhao,Chi Li,Elias E. Elemike,Damian C. Onwudiwe,Javed Akram,Wei Lei
X-ray photodiodes made of metal halide perovskites (MHPs) which directly convert X-ray photons into electron-hole pairs have shown advantages in low-cost and high X-ray detection sensitivity. However, lattice-mismatched blocking layers deposited by spin-coating or evaporation cannot fully limit the dark current and noise current under large reverse bias. In this work, Solution-processed dopant incorporated epitaxial growth is employed to form sufficient blocking barriers through epitaxially growing lattice-matched n-type MHPs (bismuth-doped) and p-type MHPs (silver-doped) on opposite faces of intrinsic CH 3 NH 3 PbBr 2.5 Cl 0.5 MHP single crystals. Through energy structure design, electron/hole blocking layers can form sufficient charges barriers, the X-ray PDs exhibit a low leakage dark current density of ~ 11 nA cm −2 under large reverse electrical field (over 500 V cm −1 ) and noise current of 47 fAHz −0.5 (1 mm 2 , over 500 V cm −1 ). The large external electrical field enables a state-of-art response speed (fall) of 750 ns, large X-ray detection sensitivity of 36.0 μ C mGy − 1 c m − 2 and the lowest detectable dose rate of 16 nGys −1 (40 kVp). This work will motivate new strategies to fabricate high-performance devices based on perovskites using solution-processed methods. These founding also explore a new generation of low dose and high dynamic X-ray detectors based on MHPs.
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高影响因子
MATERIALS CHARACTERIZATION
·
2020
·
IF 3.562
Shuai Ma,Fengjin Xia,Lifeng Dong,Ruibin Jia,Zhenzong Sha,Jie Wang,Yingjie Chen,Beili Pang,Hongzhou Dong,Liyan Yu
Coupling plasmonic gold nanoparticles to sub-stoichiometric copper chalcogenide nanocrystals tends to generate promising nano-heterostructures. We report the research on plasmon-enhanced Cu 2 ZnSn(S 1 − x ,Se x ) 4 -Au nanocomposites (CZTSSe for 0 < x < 1, and CZTS if x = 0), emphasizing on exploring how hetero-epitaxial relationship at Cu 2 ZnSn(S 1 − x ,Se x ) 4 //Au interfaces affects their optoelectronic properties. Digital image processing tools, fast Fourier transform/Fourier inversion, are utilized to extract interfacial epitaxial orientations. We demonstrate that nonnegligible lattice mismatch in short-range order could be equivalently compensated by coincident lattice-matching at certain periodic intervals in a long-range order. By exploring polytypic CZTSSe, we further provide reasonable interpretation of abnormal symmetrical distribution of Au on CZTSSe, which induces lower gold coverage rate and accordingly moderates their localized surface plasmon resonance effect, compared to that of CZTS. It indicates that the shape and phase of CZTSSe should be elaborately controlled to realize optimal multi-site nucleation of heterostructured nanocomposites. As a result, by testing optoelectronic response of solar cells with Cu 2 ZnSn(S 1 − x ,Se x ) 4 -Au films as counter electrodes (CEs), we confirm that a superior hetero-epitaxial interconnection between Au and Cu 2 ZnSn(S 1 − x ,Se x ) 4 can availably restrain interfacial defects of the junction and thus contribute efficient hole transfer/transportation in cathode region. The corresponding balanced electron and hole migration plays a quite significant role in the improvement of open-circuit voltage ( V oc ) and fill factor of photovoltaic devices .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Rui Guo
The metastable α-Ag 2 MoO 4 was usually prepared under high pressure conditions, but it was successfully prepared by epitaxial growth on WO 3 nanosheets at room temperature under normal pressure in this work. The interfacial structure of α-Ag 2 MoO 4 /WO 3 (AW) was characterized by XRD , SEM, TEM, and Raman spectra to explain the process of phase transformation from the β phase to the α phase. The photocatalytic activities were evaluated by the degradation of methylene blue and Escherichia coli . The results indicate that AW-60 exhibits the best photocatalytic activity. The enhancement in photocatalytic performance is mainly due to the photogenerated electron flow between the components from WO 3 to Ag 2 MoO 4 in AW-60. The initial inactivation of E. coli is due to the decomposition of macromolecules with a typical mass range m / z of 2–7 kDa. The corresponding photocatalytic mechanism was proposed and confirmed by the measurements, such as BET, fluorescence spectrum, free radical trapping and the ζ potential of WO 3 and AW-60.
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高影响因子
RSC Advances
·
2017
·Vol. 7
·期 31
·19205-19210
·
IF 3.108
Jing Yan,Honghu Yao,Junhao Li,Shiman He,Qili Wu,Xianfeng Yang,Wasim Ullah Khan,Jianxin Shi,Mingmei Wu
To meet the increasing requirement, much effort has been devoted to enhance the emission intensity and tailor the emission color of rare earth phosphors. However, limited contributions have been made to the up-conversion (UC) of nanorods by complete epitaxial growth on each facet to achieve this requirement. In this study, we propose a facile epitaxial growth route to grow anisotropic hexagonal β-NaYF4:Yb3+/Ho3+@β-NaYbF4:Er3+, β-NaYF4:Yb3+/Ho3+@β-NaYF4, and β-NaYbF4:Er3+@β-NaYF4 core/shell nanorods, which were realized by adding hexagonal β-NaYF4:Yb3+/Ho3+ or β-NaYbF4:Er3+ nanorods as a core-nanostructure into a solution containing cubic α-NaYbF4:Er3+ or α-NaYF4 nanoparticles as the shell-precursor. During epitaxial growth-induced phase transformation, the precursor nanoparticles disappeared gradually in the solution and consequently corresponding β-phased shell yielded on each outer facet of each β-phased nanorod core. Eventually, the nanorod core was covered completely with a uniformly grown β-NaYbF4:Er3+ or β-NaYF4 shell. The UC emission of either β-NaYF4:Yb3+/Ho3+ or β-NaYbF4:Er3+ core can be enhanced by the outer shell due to the decrease in the number of surface defects. In addition, tailored UC emissions could be obtained by controlling the shell components and thickness, typically in the core/shell nanorods of β-NaYF4:Yb3+/Ho3+@β-NaYbF4:Er3+. The tunable colors with improved emission in these core/shell nanorods may find wider applications in multicolor labeling and anti-counterfeiting.
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高影响因子
CHEMISTRY OF MATERIALS
·
2019
·
IF 10.159
Yi Hu,Zheng-Hang Qi,Jingyu Lu,Renpeng Chen,Mingzhi Zou,Tao Chen,Wenjun Zhang,Yanrong Wang,Xiaolan Xue,Jing Ma,Zhong Jin
Numerous theoretical simulation works have predicted the fantastic properties of arsenene, such as a tunable band gap, topological states, and a high carrier mobility. However, the experimental synthesis of two-dimensional arsenic materials is still difficult. Herein, we report the epitaxial growth of single-crystalline few-layer gray arsenic nanoflakes with hexagonal and half-hexagonal shapes via a van der Waals epitaxy method. The gray arsenic nanoflakes can be transferred from mica to other substrates without structural damage. Moreover, a universal method for estimating the antidegradation efficiency of polymer-passivated gray arsenic nanoflakes by determining the interfacial interaction energies and geometry changes via first-principles calculations was developed. Consistent with theoretical predictions, we further experimentally confirm that functional polymer coating can effectively suppress the chemical degradation and phase transformation of gray arsenic nanoflakes for at least 50 days under ambient exposure, thus facilitating further nanodevice fabrication, preservation, and measurements. Moreover, the gray arsenic nanoflakes show metal to semiconductor transformation after long-term ambient exposure owing to the oxidation of arsenic in air.
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高影响因子
CHEMISTRY OF MATERIALS
·
2020
·
IF 9.567
Dong Li,Xiaoli Zhang,Muhammad Ramzan,Kai Gu,Yu Chen,Jiatao Zhang,Bingsuo Zou,Haizheng Zhong
Shell thickness control of core/shell quantum dots (QDs) plays an important role in determining their optical properties as well as the corresponding device performance. PbSe-based core/shell QDs are attractive near-infrared (NIR) light emitters for photonic and optoelectronic applications. We herein report the colloidal synthesis of giant shell PbSe-based core/shell QDs through controllable reactions between preformed PbSe QDs and Cd2+ ions in polar solvents. The preformed PbSe QDs experienced cation-exchange reaction in N,N-dimethylformamide (DMF), while they underwent epitaxial growth of CdS shell in dimethyl sulfoxide (DMSO). The cation exchange of preformed PbSe QDs in DMF result in PbSe/CdSe core/shell QDs with similar size (ca. 6.3 nm) but tunable shell thickness from 0.5 to 2.9 nm. In comparison, the epitaxial growth of preformed PbSe QDs in DMSO produce PbSe/CdS core/shell QDs in DMSO with average core size of ∼5.7 nm but tunable shell thickness from 0.5 to 3.1 nm. These resulting PbSe-based core/shell QDs show tunable photoluminescence emission of 1393–1744 nm for PbSe/CdSe core/shell QDs and 1566–1719 nm for PbSe/CdS core/shell QDs. The cation exchange and epitaxial growth reactions of preformed PbSe QDs were further investigated by comparing the interactions between solvents and cation ions through nuclear magnetic resonance (NMR) measurements. The interactions between Cd2+ and DMSO are stronger than that of DMF, while the interactions between Pb2+ and DMSO are weaker than that of DMF. The difference accounts for the reaction transition from cation exchange to epitaxial growth, providing alternative route for fabricating shell controllable PbSe-based core/shell QDs.
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高影响因子
Materials Today Physics
·
2024
·
IF 10
Kaiyi Wang,Ruoyan Xu,Fenglin Gao,Shiyao Xu,Shijie Hao,Chen Fan,Yuan Zhang,Yuehua Wei,Xiongxiong Xue,Guolin Hao
Two-dimensional (2D) bilayer transition metal dichalcogenides (TMDCs) have attracted considerable attention due to their promising applications in the fields of electronics, optoelectronics , valleytronics and nonlinear optics . However, the precise synthesis of large-area, high-yield and uniform bilayer MoS 2 semiconductors remains a significant challenge. Herein, we have developed one two-stage chemical vapor deposition strategy based on strain engineering, enabling the controlled preparation of large-area (4 × 6 cm 2 ) bilayer MoS 2 nanostructures . Systematic characterizations indicate that compressive strain was introduced during the growth of first layer MoS 2 , which effectively induces the synthesis of the second layer MoS 2 . First-principles calculations based on density functional theory further reveal the mechanism of strain induced controllable growth of bilayer MoS 2 . Field-effect transistors based on AA and AB stacking bilayer MoS 2 have been fabricated exhibiting excellent electronic properties. Our work provides a new pathway for the precise preparation of bilayer TMDCs nanostructures, offering experimental support for their application in the field of electronic and optoelectronic devices .
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高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Dongdong Li,Jinbiao Chen,Yingtong Chen,Yian Wang,Yanpeng Fu,Minhua Shao,Zhicong Shi
Rechargeable aprotic Li-O 2 batteries have attracted increasing attention due to their extremely high capacity, and it is very important to design appropriate strategies to synthesize efficient catalysts used as oxygen cathode. In present work, we present an expedient “instantaneous nucleation and epitaxial growth” (INEG) synthesis strategy for convenient and large-scale synthesis of ultrafine MOCPs nanoparticles (size 50–100 nm) with obvious advantages such as fast synthesis, high yields, low costs and reduced synthetic steps. The bimetallic Ru/Co-MOCPs are further pyrolyzed to obtain bimetallic Co– and low content of Ru-based nanoparticles embedded within nitrogen-doped carbon (Ru/Co@N C) as an efficient catalyst used in Li-O 2 battery. The Ru/Co@N C provides porous carbon framework for the ion transportation and O 2 diffusion, and has large amounts of metal/nonmetal sites as active site to promote the oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) in Li-O 2 batteries. As a consequence, a high discharge specific capacity of 15246 mA h g −1 at 250 mA g −1 , excellent rate capability at different current densities, and stable overpotential during cycling, are achieved. This work opened up a new understanding for the industrialized synthesis of ultrafine catalysts for Li-O 2 batteries with excellent structural characteristics and electrochemical performance.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Yan Ren,Jie Yang,Qi Liu,Ping Bai,Hengrui Qiu,Jinglong Cui,Yongqiang Zhang,Wenxiu He
Defect-assisted epitaxial growth of metal–organic frameworks (MOFs) on conductive substrates offers an efficient strategy for enhancing electrochemical performance. In this study, a rational approach is proposed to promote the epitaxial growth of ZIF-67 on graphene by precisely tuning the Co 2+ to 2-methylimidazole molar ratio, thereby improving lithium-ion storage capabilities. The resulting NiCo 2 O 4 @ZIF-67/graphene (NCO/Z67G-2) composite exhibits outstanding electrochemical performance, delivering a high reversible capacity of 1298.5 mAh g −1 after 100 cycles and a rate capability of 601.1 mAh g −1 at 1.4 A g −1 . Structural characterization indicates that optimized metal–ligand coordination facilitates defect-assisted epitaxial growth of ZIF-67 along the (001) crystal plane, resulting in a highly conductive interface enriched with Co-N-C active sites. Electrochemical analyses further reveal that the superior performance stems from a capacitive-dominated lithium storage mechanism, fast ion diffusion kinetics, and the formation of a thin and uniform LiF-rich solid electrolyte interphase (SEI), which collectively contribute to the reduced charge transfer resistance (88.01 Ω). This study provides valuable insights for the rational design of advanced electrode materials via interface engineering and defect regulation in high-performance energy storage systems.
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高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 43
·435501
·
IF 3.874
Chunhua Wang,Bo Han,Jia Li,Qiang Gao,Kaisheng Xia,Chenggang Zhou
Design and develop of cost-effective non-enzymatic electrode materials is of great importance for next generation of glucose sensors. In this work, we report a high-performance self-supporting electrode fabricated via direct epitaxial growth of nickel phosphide on Ni foam (Ni2P/NF) for nonenzymatic glucose sensors in alkaline solution. Under the optimal conditions, the uniform Ni2P nanosheets could be obtained with an average thickness of 80 nm, which provides sufficient active sites for glucose molecules. As a consequence, the Ni2P/NF electrode displays superior electrochemistry performances with a high sensitivity of 6375.1 μA mM−1 cm−2, a quick response about 1 s, a low detection limit of 0.14 μM (S/N = 3), and good selectivity and specificity. Benefit from the strong interaction between Ni2P and NF, the Ni2P/NF electrode is also highly stable for long-term applications. Furthermore, the Ni2P/NF electrode is capable of analyzing glucose in human blood serum with satisfactory results, indicating that the Ni2P/NF is a potential candidate for glucose sensing in real life.
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PubMed
高影响因子
Catalysis Science & Technology
·
2018
·Vol. 8
·期 24
·6407-6419
·
IF 5.365
Pengyu Niu,Hongjuan Xi,Jun Ren,Minggui Lin,Qiang Wang,Xiaoyan Chen,Pengfei Wang,Litao Jia,Bo Hou,Debao Li
A core–shell ZSM-22 (Z@S) was synthesized via epitaxial growth. The characterization results of Z@S validated that the acid sites located on the external surface of core ZSM-22 were passivated by the epitaxial shell of highly siliceous ZSM-22 and the acid strength of ZSM-22 remained unchanged. For comparison, highly siliceous and boron-containing ZSM-22 were also synthesized and characterized. In n-dodecane hydroisomerization, highly siliceous ZSM-22 almost without acid sites at the external surface achieved a much higher iso-dodecane selectivity than boron-containing ZSM-22 with weak acid sites. Z@S with strong acid sites and passivated surface acidity showed high activity and favored pore mouth catalysis but exhibited a lowered iso-dodecane selectivity. The reduced external surface acid sites enhanced the diffusion of n-alkane into the micropores, leading to severe cracking reaction caused by acid sites on the internal surface. Further modifying Z@S via micropore blockage could greatly inhibit cracking reaction inside the micropores and confine isomerization at the pore mouth of ZSM-22. This new ZSM-22 catalyst achieved higher activity and a higher iso-dodecane yield than catalysts with weak acidity.
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高影响因子
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