Search results for: Jianhao Hua

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Strongly coupled CdX (XS, Se and Te) quantum dots/TiO2 nanocomposites for photocatalytic degradation of benzene under visible light irradiation

Jianhao Hua, Meng Wang, Yang Jiao, Hong Li, more

Optik - International Journal for Light and Electron Optics > 2018 > 171 > C > 95-106

In this paper, a series of chalcogenide components CdX (XS, Se and Te) quantum dots/TiO₂ binary hybrids were investigated by exploiting visible-light-driven organic compound degradation. CdX QDs were well dispersed on the surface of TiO₂ nanoparticles with a firm and close contact based on the analysis of SEM, TEM, XRD and XPS. As results, the photocatalytic degradation performance of benzene from...

article

Determination of norfloxacin or ciprofloxacin by carbon dots fluorescence enhancement using magnetic nanoparticles as adsorbent

Jianhao Hua, Yang Jiao, Meng Wang, Yaling Yang

Microchimica Acta > 2018 > 185 > 2 > 1-9

The authors describe a method for the determination of norfloxacin (NOR) or ciprofloxacin (CIP). It is making use of a combination of fluorescence enhancement and magnetic solid-phase extraction (MSPE). Sulfur-doped carbon dots (S-CDs) are used as a fluorescent probe. They were prepared by a one-pot method using poly(4-styrenesulfonic acid-co-maleic acid) (PSMA) as a source for carbon and sulfur....

article

Highly fluorescent carbon quantum dots as nanoprobes for sensitive and selective determination of mercury (II) in surface waters

Jianhao Hua, Jian Yang, Yan Zhu, Chunxi Zhao, more

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 2017 > 187 > C > 149-155

A novel carbon quantum dots (CQDs) was successfully prepared through one-step green hydrothermal method using polyacrylamide as carbon source. The prepared CQDs were characterized using TEM, XRD, XPS, FT-IR, UV–Vis, and fluorescence spectroscopy. The CQDs was demonstrated as nanoprobes for mercury ion detection, moreover, it demonstrated excitation-dependent and superior stability in acidic and alkaline...

article

Hydrothermal Synthesis of Nitrogen-Doped Carbon Quantum Dots as Fluorescent Probes for the Detection of Dopamine

Chunxi Zhao, Yang Jiao, Jianhao Hua, Jian Yang, more

Journal of Fluorescence > 2018 > 28 > 1 > 269-276

Nitrogen-doped carbon quantum dots (N-CQDs) were synthesized though a facile, economical and straightforward hydrothermal method by using polyacrylamide as both carbon and nitrogen sources. The as-prepared N-CQDs offered high quantum yield of 23.1%, exhibited good water solubility and fluorescence properties. Moreover, the N-CQDs can be used as effective probes for sensitive and selective detection...

article

Nitrogen-doped carbon quantum dots as a fluorescence probe combined with magnetic solid-phase extraction purification for analysis of folic acid in human serum

Meng Wang, Yang Jiao, Chunsheng Cheng, Jianhao Hua, more

Analytical and Bioanalytical Chemistry > 2017 > 409 > 30 > 7063-7075

A novel and sensitive method based on nitrogen-doped carbon quantum dots as a fluorescence probe coupled with magnetic solid-phase extraction (MSPE) purification for analysis of folic acid (FA) in human serum samples has been established for the first time. In the developed system, magnetic nanoparticles coated with hexanoic acid (Fe₃O₄@C₆) were synthesized by a one-step chemical co-precipitation...

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FLUORESCENCE QUENCHING (2)
NITROGEN-DOPED CARBON QUANTUM DOTS (2)
POLYACRYLAMIDE (2)
BENZENE (1)
BOVINE RAW MILK (1)
CARBON QUANTUM DOTS (1)
CDX QDS-COUPLED TIO2 (1)
DOPAMINE (1)
FLUORESCENT PROBE (1)
FLUORESCENT QUENCHING (1)
FLUOROQUINOLONES (1)
FOLIC ACID DETERMINATION (1)
HUMAN SERUM SAMPLES (1)
MAGNETIC SOLID-PHASE EXTRACTION (1)
MAGNETIC SOLID-PHASE EXTRACTION (MSPE) PURIFICATION (1)
MERCURY ION DETECTION (1)
NANOMATERIALS (1)
PHOTOCATALYTIC DEGRADATION (1)
SULFONIC ACID (1)
SURFACE STATE (1)
SURFACE STATES (1)
VISIBLE LIGHT IRRADIATION (1)
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Search results for: Jianhao Hua

Strongly coupled CdX (XS, Se and Te) quantum dots/TiO2 nanocomposites for photocatalytic degradation of benzene under visible light irradiation

Determination of norfloxacin or ciprofloxacin by carbon dots fluorescence enhancement using magnetic nanoparticles as adsorbent

Highly fluorescent carbon quantum dots as nanoprobes for sensitive and selective determination of mercury (II) in surface waters

Hydrothermal Synthesis of Nitrogen-Doped Carbon Quantum Dots as Fluorescent Probes for the Detection of Dopamine

Nitrogen-doped carbon quantum dots as a fluorescence probe combined with magnetic solid-phase extraction purification for analysis of folic acid in human serum

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