Yongjun Zhang

ORCID: 0000-0001-9087-5297
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Research Areas
  • Gold and Silver Nanoparticles Synthesis and Applications
  • ZnO doping and properties
  • Plasmonic and Surface Plasmon Research
  • Quantum Dots Synthesis And Properties
  • Copper-based nanomaterials and applications
  • Advanced biosensing and bioanalysis techniques
  • Gas Sensing Nanomaterials and Sensors
  • Magnetic properties of thin films
  • Ga2O3 and related materials
  • Nanocluster Synthesis and Applications
  • Nanomaterials and Printing Technologies
  • nanoparticles nucleation surface interactions
  • Biosensors and Analytical Detection
  • Magnetic and transport properties of perovskites and related materials
  • Nanomaterials for catalytic reactions
  • Chalcogenide Semiconductor Thin Films
  • Magnetic Properties and Synthesis of Ferrites
  • Protein Interaction Studies and Fluorescence Analysis
  • Nonlinear Optical Materials Studies
  • Advancements in Solid Oxide Fuel Cells
  • Copper Interconnects and Reliability
  • Advanced Nanomaterials in Catalysis
  • Graphene and Nanomaterials Applications
  • Multiferroics and related materials
  • Nonlinear Optical Materials Research

Hangzhou Dianzi University
2019-2024

Northeast Petroleum University
2024

Beijing Institute of Petrochemical Technology
2024

Shandong Youth University of Political Science
2021

Hangzhou Xixi hospital
2020

Jilin Normal University
2009-2019

Ministry of Education of the People's Republic of China
2019

Nanjing University
2004-2019

Collaborative Innovation Center of Advanced Microstructures
2019

Zen-Noh (Japan)
2005

In this work, we report the enhanced catalytic reduction of 4-nitrophenol driven by Fe3O4-Au magnetic nanocomposite interface engineering. A facile solvothermal method is employed for Fe3O4 hollow microspheres and synthesis via a seed deposition process. Complementary structural, chemical composition valence state studies validate that as-obtained samples are formed in pure magnetite phase. series characterizations including conventional scanning/transmission electron microscopy (SEM/TEM),...

10.3390/nano8050353 article EN cc-by Nanomaterials 2018-05-22

In this study, we designed shell-dependent Ag@Cu<sub>2</sub>O core–shell nanoparticles (NPs) for SERS study. Compared to Cu<sub>2</sub>O NPs, NPs exhibited high activity because of the localized surface plasmon resonance (LSPR) from Ag core.

10.1039/c7ra01187c article EN cc-by-nc RSC Advances 2017-01-01

An easy-handling and low-cost method is utilized to controllably fabricate nanopattern arrays as the surface-enhanced Raman scattering (SERS) active substrates with high density of SERS-active areas (hot spots). A hybrid silver array nanocaps nanotriangles are prepared by combining magnetron sputtering plasma etching. By adjusting etching time polystyrene (PS) colloid spheres in nanobowls, morphology can be easily manipulated control formation distribution hot spots. The experimental results...

10.1021/acsami.6b14008 article EN ACS Applied Materials & Interfaces 2017-02-13

Hexagonal close-packed tilted Ag nanorod arrays that exhibit excellent uniformity and reproducibility were prepared. The polarization dependence of SERS array is fundamentally explained by integrating the experimental theoretical numerical simulation data.

10.1039/c8nr01198b article EN Nanoscale 2018-01-01

Compared with noble metals, semiconductors have been gradually exploited more as another type of SERS substrate materials due to their distinctive advantages.

10.1039/c8tc06588h article EN Journal of Materials Chemistry C 2019-01-01

The isomerization between dimethyldihydropyrene (DHP) and cyclophanediene (CPD) makes it be a potential molecular device, topological regulation provided an effective strategy to tune its optical response switching efficiency....

10.1039/d5nj00798d article EN New Journal of Chemistry 2025-01-01

The nanocaps array of TiO₂/Ag bilayer with different Ag thicknesses and co-sputtering TiO₂-Ag monolayer TiO₂ contents were fabricated on a two-dimensional colloidal substrate for the investigation Surface enhanced Raman scattering (SERS) properties. For bilayer, when thickness increased, SERS intensity decreased. Meanwhile, significant enhancement was observed sublayer 10 nm compared to pure monolayer, which ascribed metal-semiconductor synergistic effect that electromagnetic mechanism (EM)...

10.3390/nano7070159 article EN cc-by Nanomaterials 2017-06-28

In this study, we introduced an ordered metal–semiconductor–molecular system and investigated the surface-enhanced Raman scattering (SERS) effect. The carrier distribution density can be easily monitored by changing thickness of Cu2S film on surface Ag monolayer under different laser excitations. Meanwhile, wavelengths were selected for investigating enhancement mechanism based viewpoint number carriers changes in excitation energy. During process, found that SERS peaks located at 1586 cm–1...

10.1021/acs.jpcc.8b00701 article EN The Journal of Physical Chemistry C 2018-02-19

Many studies have shown that it is important to consider the harmful effects of phenolic hormones on human body. Traditional UV detection has many limitations, so there a need develop new methods. We demonstrated simple and rapid surface-enhanced resonance Raman scattering (SERRS) based method trace amounts estrogen. As result coupling reaction, formation strong SERRS activity azo compound. Therefore, limits are as low 0.2 × 10−4 for estrone (E1), estriol (E3), bisphenol A (BPA). This...

10.3390/molecules23061330 article EN cc-by Molecules 2018-06-01

Overexpression of the Lens culinaris agglutinin-reactive fraction alpha-fetoprotein (AFP-L3) is an essential biomarker for early diagnosis hepatocellular carcinoma (HCC). In this study, we designed a new surface-enhanced Raman spectroscopy active chip detection AFP with high sensitivity and excellent repeatability. This was composed honeycomb gold nanostructure array strong electromagnetic field coupling due to special cavity geometric characteristics structure. The structure exhibited...

10.1021/acsami.9b16288 article EN ACS Applied Materials & Interfaces 2019-11-05

We discuss how the controllable carrier influences localized surface plasmon resonance (LSPR) and charge transfer (CT) in same system based on ultraviolet–visible surface-enhanced Raman scattering (SERS) measurements. The LSPR can be easily tuned from 580 to 743 nm by changing sputtering power of Cu2S Ag composite substrate. During this process, surprisingly, we find that is proportional Cu2S. This observation indicates accurately adjusted content semiconductor, or even density. Moreover,...

10.1021/acs.jpclett.8b02416 article EN The Journal of Physical Chemistry Letters 2018-09-06

In this study, the three-dimensional (3D) flowerlike porous Fe3O4 microcrystals were prepared by a self-assembly approach with assistance of ethylene glycol (EG). The generation mechanism 3D was revealed through controlling parameters hydrothermal reaction time, molar mass urea, and calcination temperature. proposed exhibited superparamagnetic behaviors high saturation magnetization (i.e., up to 73.1 emu·g–1) at room Fe3O4–Au magnetic composites (MCs) further seed deposition process, surface...

10.1021/acs.iecr.9b02777 article EN Industrial & Engineering Chemistry Research 2019-08-09
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