Zhenguo Ji

ORCID: 0000-0002-9405-9403
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About
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Research Areas
  • Luminescence Properties of Advanced Materials
  • Advanced Photocatalysis Techniques
  • ZnO doping and properties
  • Copper-based nanomaterials and applications
  • Gas Sensing Nanomaterials and Sensors
  • Perovskite Materials and Applications
  • Glass properties and applications
  • Advancements in Battery Materials
  • Supercapacitor Materials and Fabrication
  • Transition Metal Oxide Nanomaterials
  • Advanced Memory and Neural Computing
  • TiO2 Photocatalysis and Solar Cells
  • Microwave Dielectric Ceramics Synthesis
  • Ga2O3 and related materials
  • Quantum Dots Synthesis And Properties
  • Ferroelectric and Piezoelectric Materials
  • Luminescence and Fluorescent Materials
  • X-ray Diffraction in Crystallography
  • Inorganic Fluorides and Related Compounds
  • Advanced battery technologies research
  • Thin-Film Transistor Technologies
  • 2D Materials and Applications
  • Radiation Detection and Scintillator Technologies
  • Semiconductor materials and devices
  • Multiferroics and related materials

North China Electric Power University
2025

Dalian Maritime University
2022-2024

Hangzhou Dianzi University
2012-2021

Capital Medical University
2021

Beijing Friendship Hospital
2021

State Key Laboratory of Silicon Materials
2005-2019

Zhejiang University
2010-2019

Hangzhou Xixi hospital
2015-2019

Hangzhou Academy of Agricultural Sciences
2015-2019

Materials Science & Engineering
2018

Yb3+/Er3+/Cr3+ triply doped transparent bulk glass ceramic containing orthorhombic YF3 and cubic Ga2O3 nanocrystals was fabricated by a melt-quenching route to explore its possible application in optical thermometry with high spatial temperature resolution. It experimentally observed that Yb3+/Er3+ ions incorporated into the precipitated nanophase, while Cr3+ partitioned crystallized nanophase after crystallization. Importantly, such isolation strategy efficiently suppressed adverse energy...

10.1021/acsami.5b06036 article EN ACS Applied Materials & Interfaces 2015-08-19

Developing advanced luminescent materials and techniques is of significant importance for anti-counterfeiting applications, remains a huge challenge. In this work, new efficient approach achieving dual-mode luminescence with tunable color outputs via Gd3+ -mediated interfacial energy transfer, Ce3+ -assisted cross-relaxation, core-shell nanostructuring strategy reported. The introduction into the inner core not only serves regulation upconversion emission, but also facilitates ultraviolet...

10.1002/adma.202002121 article EN Advanced Materials 2020-10-01

Dual-activator based optical thermometry with high sensitivity and superior signal discriminability was developed.

10.1039/c6tc02934e article EN Journal of Materials Chemistry C 2016-01-01

A strategy to achieve 808 nm excited single-band red upconversion luminescence of Ho3+ via the core–shell nanoarchitecture design was provided. Specifically, synthesized Yb/Ho/Ce: NaGdF4@Yb/Nd: NaYF4 active-core@active-shell nanoparticles were evidenced enable high-content doping Nd3+ (∼10 mol %) in shell layer and, thus, markedly enhance emission from activators core with assistance spatially confined ions and efficient energy transfer → Yb3+(shell) Yb3+(core) Ho3+. Importantly, introducing...

10.1021/acs.jpclett.5b01180 article EN The Journal of Physical Chemistry Letters 2015-07-03

A non-rare-earth doped Mn<sup>4+</sup>:Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>red phosphor and the related glass–ceramics were fabricated to explore their application in white light-emitting diodes.

10.1039/c5tc04133c article EN Journal of Materials Chemistry C 2016-01-01

High photoinduced charge-carrier-separation efficiency plays a crucial factor in determining the photocatalytic activities of photocatalysts, and it remains challenging to steer charge separation an accurate manner. Herein, we address this important challenge by growing Co2P cocatalyst onto edges black phosphorus (BP) nanosheets craft Co–P bonds Co2P/BP photocatalyst. As demonstrated photocurrent measurement first-principle calculation, acting faciliate atomic-level charge-flow steering can...

10.1021/acscatal.9b02274 article EN ACS Catalysis 2019-07-26

Currently, upconversion nanocrystals and long-lasting phosphorescent particles have attracted extensive research interest for their possible applications as bioimaging probes. However, there are few reports concerning the achievement of both luminescence lanthanide ions phosphorescence transition metal in a sole host so far. Herein, we demonstrate novel calcium gallium germanium garnet (Ca3Ga2Ge3O12) where such Tm3+/Yb3+ Cr3+ can be easily incorporated through substituting Ca2+ Ga3+...

10.1021/ic501238u article EN Inorganic Chemistry 2014-07-28

The photocatalytic activity of TiO2 can be mainly improved from three approaches: (1) enhancing surface energy, (2) increasing availability visible light and (3) improving the separation efficiency photo-induced electrons holes. Here, we report a one-step route to obtain Mo + N codoped sheets with dominant {001} facets by hydrothermal process using TiN, MoO3, HF HNO3 as precursor. XRD patterns confirmed doping into lattice anatase XPS survey spectrum shows nitrogen (N) acting interstitial or...

10.1039/c2jm32391e article EN Journal of Materials Chemistry 2012-01-01

Garnet-based Li<sub>6</sub>CaLa<sub>2−2x</sub>Eu<sub>2x</sub>Sb<sub>2</sub>O<sub>12</sub>(<italic>x</italic>= 0.1–1.0) red phosphors and the related inorganic glass ceramics were fabricated to find potential applications in WLEDs.

10.1039/c5tc00708a article EN Journal of Materials Chemistry C 2015-01-01

Abstract A strategy has been adopted for simultaneous morphology manipulation and upconversion luminescence enhancement of β-NaYF 4 :Yb 3+ /Er microcrystals by simply tuning the KF dosage. X-ray power diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission (TEM), photoelectron spectroscopy (XPS) photoluminescence spectra (PL) were used to characterize samples. The influence molar ratio Y on crystal phase systematically investigated discussed. It is found that...

10.1038/srep12745 article EN cc-by Scientific Reports 2015-08-03

With admirable luminescence performance and a cheap price, non-rare-earth-based oxide red phosphors are potential competitor of rare-earth-doped for warm white LEDs (WLEDs). Herein, novel double-perovskite Ba2GdSbO6:Mn4+ phosphor, demonstrating strong emission ascribed to spin-forbidden Mn4+:2Eg → 4A2g transition in the region 620-750 nm, has been synthesized via solid-state reaction route. The microstructure properties investigated detail. concentration quenching mechanism thermal stability...

10.1039/c8dt01575a article EN Dalton Transactions 2018-01-01

Non-rare-earth Mn4+-doped double-perovskite (Ba1- xSr x)2YSbO6:Mn4+ red-emitting phosphors with adjustable photoluminescence are fabricated via traditional high-temperature sintering reaction. The structural evolution, variation of Mn4+ local environment, luminescent properties, and thermal quenching studied systematically. With elevation Sr2+ substituting content, the major diffraction peak moves up to a higher angle gradually. Impressively, increasing substitution Ba2+ cation from 0 100%,...

10.1021/acs.inorgchem.8b00947 article EN Inorganic Chemistry 2018-07-23

Owing to its low-cost and satisfactory luminescent-emission performance in warm white light-emitting diodes (w-LEDs), the non-rare-earth Mn4+-activated red phosphor has become a promising competitor of commercial rare-earth doped phosphor. In this study, series novel red-light emitting phosphors based on Ca2YSbO6:Mn4+ have been developed successfully by conventional solid-state reaction. The structural luminescent properties these are systematically investigated. as-prepared product exhibits...

10.1039/c8dt00992a article EN Dalton Transactions 2018-01-01

A novel perovskite La<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>:Eu<sup>3+</sup>red-emitting phosphor and the related phosphor-in-glass (PiG) inorganic color converter for high-power warm w-LEDs were fabricated.

10.1039/c5dt04909a article EN Dalton Transactions 2016-01-01

Construction of electrodes with fast reaction kinetics is great importance for achieving advanced supercapacitors. Herein we report a facile combined synthetic strategy atomic layer deposition (ALD) and electrodeposition to rationally fabricate nanotube/nanoflake core/shell arrays. ALD-TiO2 nanotubes are used as the skeleton core assembly electrodeposited MnO2-C nanoflake shells forming structure. Highly porous architecture good electrical conductivity in this unique structure, resulting...

10.1088/1361-6528/28/5/055405 article EN Nanotechnology 2016-12-28
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