scholarly journals Chelating agent and substrate effect on hydrothermal growth of Yb3+/Er3+ doped NaYf4 film

2021 ◽  
Vol 15 (1) ◽  
pp. 69-78
Author(s):  
Suman Duhan ◽  
Kedar Sahoo ◽  
Ahmad Imteyaz ◽  
Sudhir Singh ◽  
Manoj Kumar
Keyword(s):  
Crystal Growth ◽  
Hydrothermal Method ◽  
Luminescence Intensity ◽  
Chelating Agents ◽  
Chelating Agent ◽  
Upconversion Emission ◽  
Substrate Effect ◽  
Current Investigation ◽  
One Step ◽  
Film Roughness

We report simultaneous crystal growth and deposition of upconverting Yb3+/Er3+ doped NaYF4 film (UCF) on conducting and non-conducting substrates by one-step hydrothermal method. The characteristics such as film topography, morphology, crystallographic phase and upconverting luminescence intensity were found to depend both on the chelating agent and nature of the substrate. The characteristics of the prepared films varied interestingly when either the chelating agent or the substrate was changed. The upconversion emission intensities were found to increase with decreasing film roughness. Further, current investigation demonstrated that the NaYF4 films deposited using EDTA or DTPA chelating agents on ITO substrate and EGTA chelating agent on PG substrate were more uniform and resulted in greater upconverted emission intensities. We envision plausible use of current technology in the development of affordable optical platforms for several optoelectronic applications.

High photocatalytic property and crystal growth of spindle-like ZnO microparticles synthesized by one-step hydrothermal method

Vacuum ◽  
2017 ◽  
Vol 144 ◽  
pp. 229-236 ◽  
Author(s):  
Xingjie Lv ◽  
Yi Du ◽  
Zhongfu Li ◽  
Zhongtao Chen ◽  
Kai Yang ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Hydrothermal Method ◽  
Photocatalytic Property ◽  
One Step

scholarly journals Gd3+-Doping Effect on Upconversion Emission of NaYF4: Yb3+, Er3+/Tm3+ Microparticles

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3397
Author(s):  
Aleksandra A. Vidyakina ◽  
Ilya E. Kolesnikov ◽  
Nikita A. Bogachev ◽  
Mikhail Y. Skripkin ◽  
Ilya I. Tumkin ◽  
...  
Keyword(s):  
Rare Earth ◽  
Hydrothermal Method ◽  
Luminescence Intensity ◽  
Upconversion Luminescence ◽  
Upconversion Emission ◽  
Size Reduction ◽  
Significant Enhancement ◽  
Partial Substitution ◽  
Luminescence Spectra ◽  
Co Doped

β-NaYF4 microcrystals co-doped with Yb3+, Er3+/Tm3+, and Gd3+ ions were synthesized via a hydrothermal method using rare-earth chlorides as the precursors. The SEM and XRD data show that the doped β-NaYF4 form uniform hexagonal prisms with an approximate size of 600–800 nm. The partial substitution of Y by Gd results in size reduction of microcrystals. Upconversion luminescence spectra of microcrystals upon 980 nm excitation contain characteristic intra-configurational ff bands of Er3+/Tm3+ ions. An addition of Gd3+ ions leads to a significant enhancement of upconversion luminescence intensity with maxima at 5 mol % of dopant.

One-step synthesis of flower-like Cu2O photoelectric materials by hydrothermal method

Solar Energy ◽  
2019 ◽  
Vol 188 ◽  
pp. 265-270 ◽  
Author(s):  
Binxia Yuan ◽  
Xiaobo Liu ◽  
Honghong Fu ◽  
Jianfeng Liu ◽  
Qunzhi Zhu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
One Step

scholarly journals Study on the Behavior and Removal of Cadmium and Zinc Using Taraxacum officinale and Gazania under the Application of Biodegradable Chelating Agents

2021 ◽  
Vol 11 (4) ◽  
pp. 1557
Author(s):  
Naoki Kano ◽  
Takumi Hori ◽  
Haixin Zhang ◽  
Naoto Miyamoto ◽  
David Eva Vanessa Anak ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Chelating Agents ◽  
Environmental Control ◽  
Chelating Agent ◽  
Taraxacum Officinale ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Experimental Treatments ◽  
The One

The removal of cadmium (Cd) and zinc (Zn) from soil by phytoremediation was investigated using Taraxacum officinale and Gazania. A plant environmental control system was used to cultivate the plants. The effects of different biodegradable chelating agents (i.e., EDDS, HIDS, and GLDA), relative humidity, and other competitive metals on the adsorption of Cd and Zn were also studied. In addition, the approach for metal recovery was explored by extraction of metals from plants after phytoremediation using Gazania. The concentrations of Cd and Zn were determined by inductively coupled plasma mass spectrometry (ICP-MS). In addition, one-way analysis of variance (ANOVA) tests were performed.to determine significant differences between the experimental treatments adopted in this work. Consequently, the following main conclusions were obtained: (1) In the case of Taraxacum officinale, Cd and Zn could be removed even under the presence of other heavy metals. (2) By adding a chelating agent, the amount absorbed by the shoot generally increased. (3) In the case of Gazania, the concentration of Cd was higher in root than that in shoot, whereas the concentration of Zn was higher in the shoot than that in the root. (4) Taraxacum officinale was more suitable for phytoremediation of Cd than Gazania. (5) Cd and Zn could be extracted from plants by adding a low concentration of nitric acid. (6) The one-way ANOVA tests showed no statistically significant differences among the experimental treatments.

One-step hydrothermal method for preparation of Ni/carbon thin film electrodes for efficient electroreduction of imidacloprid

2021 ◽  
Vol 45 (7) ◽  
pp. 3469-3478
Author(s):  
Zongyu Liu ◽  
Ying Tian ◽  
Xuewei Dong ◽  
Xiaohui Zhou ◽  
Xiao Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Hydrothermal Method ◽  
Removal Efficiency ◽  
Carbon Thin Film ◽  
One Step ◽  
Thin Film Electrodes

A Ni/CTF was used as the cathode for electroreduction of imidacloprid, achieving a 92.1% removal efficiency for the electroreduction of imidacloprid.

A Facile One-Step Surfactant-Free and Low-Temperature Hydrothermal Method to Prepare Uniform 3D Structured Carbonated Apatite Flowers

2009 ◽  
Vol 9 (1) ◽  
pp. 177-181 ◽  
Author(s):  
Kaili Lin ◽  
Jiang Chang ◽  
Yingjie Zhu ◽  
Wei Wu ◽  
Guofeng Cheng ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Carbonated Apatite ◽  
One Step
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