scholarly journals Large-scale synthesis and luminescence of GdPO4 hollow microspheres

RSC Advances ◽  
2018 ◽  
Vol 8 (39) ◽  
pp. 21857-21862 ◽  
Author(s):  
Yu Gao ◽  
Yongkun Qiu ◽  
Xin Wang ◽  
Yanfeng Bi ◽  
Guiyan Zhao ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Large Scale ◽  
Exchange Process ◽  
Hollow Microspheres ◽  
Precipitation Method ◽  
Homogeneous Precipitation ◽  
Calcination Process ◽  
Ion Exchange Process ◽  
Homogeneous Precipitation Method ◽  
First Time

GdPO4 hollow microspheres were synthesized by using a novel multi-step route for the first time with polystyrene (PS) spheres as the template, followed by the combination of a facile homogeneous precipitation method, an ion-exchange process, and a calcination process.

Synthesis and up-conversion photoluminescence properties of uniform monodisperse YbPO4:Ln3+ (Ln3+ = Er3+, Tm3+, Ho3+) hollow microspheres

2017 ◽  
Vol 41 (17) ◽  
pp. 8959-8964 ◽  
Author(s):  
Zhenhe Xu ◽  
Yanfeng Bi ◽  
He Yu ◽  
Junying Lin ◽  
Fu Ding ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Exchange Process ◽  
Hollow Microspheres ◽  
Homogeneous Precipitation ◽  
Photoluminescence Properties ◽  
Calcination Process ◽  
Ion Exchange Process ◽  
First Time

Uniform monodisperse YbPO4 hollow microspheres have been successfully synthesized via the combination of a facile homogeneous precipitation approach, an ion-exchange process, and a calcination process for the first time.

Uniform and Well-Dispersed LuBO3 Hollow Microspheres: Synthesis, Formation and Photoluminescence Properties

2018 ◽  
Vol 18 (12) ◽  
pp. 8302-8306 ◽  
Author(s):  
Yu Gao ◽  
Baotong Xu ◽  
Feixue Ai ◽  
Guiyan Zhao ◽  
Yanfeng Bi ◽  
...  
Keyword(s):  
Uv Light ◽  
Exchange Process ◽  
Hollow Spheres ◽  
Average Diameter ◽  
Hollow Microspheres ◽  
Precipitation Method ◽  
Ion Exchange Process ◽  
Potential Applications ◽  
First Time ◽  
Display Systems

A hard template strategy is developed to fabricate the LuBO3: Eu3+/Tb3+ hollow microspheres using a novel multi-step transformation synthetic route for the first time with polystyrene (PS) spheres as the template, followed by the combination of a facile homogeneous precipitation method, an ion-exchange process, and a calcination process. The results show that the as-obtained LuBO3: Eu3+/Tb3+ hollow spheres have a uniform morphology with an average diameter of 1.8 μm and shell thickness of about 80 nm. When used as luminescent materials, the emission colors of LuBO3: Eu3+/Tb3+ samples can be tuned from red, through orange, yellow and green–yellow, to green by simply adjusting the relative doping concentrations of the activator ions under the excitation of ultraviolet (UV) light, which might have potential applications in the field such as light display systems and optoelectronic devices.

scholarly journals Large-scale fabrication of porous YBO 3 hollow microspheres with tunable photoluminescence

2018 ◽  
Vol 5 (4) ◽  
pp. 172186 ◽  
Author(s):  
Zhenhe Xu ◽  
He Yu ◽  
Feixue Ai ◽  
Guiyan Zhao ◽  
Yanfeng Bi ◽  
...  
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Exchange Process ◽  
Hollow Spheres ◽  
Average Diameter ◽  
Hollow Microspheres ◽  
Precipitation Method ◽  
Polystyrene Spheres ◽  
Ion Exchange Process

Hollow lanthanide-doped compounds are some of the most popular materials for high-performance luminescent devices. However, it is challenging to find an approach that can fabricate large-scale and well-crystallized lanthanide-doped hollow structures and that is facile, efficient and of low cost. In this study, YBO 3 : Eu 3+ /Tb 3+ hollow microspheres were fabricated by using a novel multi-step transformation synthetic route for the first time with polystyrene spheres as the template, followed by the combination of a facile homogeneous precipitation method, an ion-exchange process and a calcination process. The results show that the as-obtained YBO 3 : Eu 3+ /Tb 3+ hollow spheres have a uniform morphology with an average diameter of 1.65 µm and shell thickness of about 160 nm. When used as luminescent materials, the emission colours of YBO 3 : Eu 3+ /Tb 3+ samples can be tuned from red, through orange, yellow and green-yellow, to green by simply adjusting the relative doping concentrations of the activator ions under the excitation of ultraviolet light, which might have potential applications in fields such as light display systems and optoelectronic devices.

Universal route to fabricate facile and flexible micro-supercapacitors with gold-coated silver electrodes

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 81936-81942 ◽  
Author(s):  
Yizhen Yu ◽  
Jian Zhang ◽  
Wu Zhang ◽  
Ruili Liu ◽  
Xing Wu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Exchange Process ◽  
Protective Layer ◽  
Cost Effective ◽  
Ion Exchange Process ◽  
Silver Electrodes ◽  
First Time ◽  
Immersion Plating

For the first time, a facile, cost-effective and universal route to fabricate the flexible Ag@Au MSCs was proposed. Au protective layer improves the performances of MSCs. This technique combines surface ion-exchange process with immersion plating.

The Avco continuous moving bed ion exchange process and large scale desalting

Desalination ◽  
1975 ◽  
Vol 17 (1) ◽  
pp. 111-120 ◽  
Author(s):  
H. Gold ◽  
A. Todisco ◽  
A.A. Sonin ◽  
R.F. Probstein
Keyword(s):  
Ion Exchange ◽  
Large Scale ◽  
Exchange Process ◽  
Moving Bed ◽  
Ion Exchange Process

scholarly journals Removal of Mercury from Waste Water: Large-Scale Performance of an Ion Exchange Process

1992 ◽  
Vol 25 (3) ◽  
pp. 165-172 ◽  
Author(s):  
J. A. Ritter ◽  
J. P. Bibler
Keyword(s):  
Waste Water ◽  
Ion Exchange ◽  
Large Scale ◽  
Exchange Process ◽  
Ion Exchange Resin ◽  
Mercury Content ◽  
Water Stream ◽  
Ion Exchange Process ◽  
Laboratory Waste ◽  
Pass Through

Duolite™ GT-73 ion exchange resin routinely reduces the mercury content of a waste water stream to less than the permitted level of 10 ppb. Effluent concentrations from the ion exchange facility (IEF) are consistently between 1 to 5 ppb, even though the feed contains a varying concentration of mercury (0.2 to 70 ppm). Two operational problems have been encountered at that facility, however. Firstly, the stated capacity of the resin for mercury was not being achieved. The abnormally low capacity was traced to analytical laboratory waste which was intermittently treated by the resin. That waste contained hydrochloric acid, stannous chloride, and potassium permanganate, among other chemicals, which presumably eluted sorbed mercury from the resin and also oxidized the thiol (SH) functional groups on the resin and rendered them inactive. The net effect was that the resin had to be replaced more frequently than anticipated. Secondly, the IEF was temporarily shut down because the mercury content of the waste water could not be reduced to below the permitted level, even with fresh resin. That problem was caused by slow settling solids composed mainly of iron which apparently adsorbed some of the mercury and allowed it to pass through the resin untreated. The solids were presumably a result of processing waste water abnormally high in iron which may have co-precipitated with mercury and other elements in the feed and caused a residual buildup of solids throughout the IEF. The problem was remedied by installing a 0.2 µm cartridge filter between the feed tank and the columns.

scholarly journals Synthesis and Characterization of Hollow Magnetic Alloy (GdNi2, Co5Gd) Nanospheres Coated with Gd2O3

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Wang Li ◽  
Fa-gen Li ◽  
Jun Wang ◽  
Guo-meng Zhao
Keyword(s):  
Large Scale ◽  
Precipitation Method ◽  
Synthesis And Characterization ◽  
Magnetic Alloy ◽  
Homogeneous Precipitation ◽  
Hollow Nanospheres ◽  
Magnetic Nanospheres ◽  
Homogeneous Precipitation Method ◽  
Potential Applications

Uniform magnetic hollow nanospheres (GdNi2, Co5Gd) coated with Gd2O3have been successfully prepared on a large scale via a urea-based homogeneous precipitation method using silica (SiO2) spheres as sacrificed templates, followed by subsequent heat treatment. Nitrogen sorption measurements and scanning electron microscope reveal that these hollow-structured magnetic nanospheres have the mesoporous shells that are composed of a large amount of uniform nanoparticles. After reduction treatment, these nanoparticles exhibit superparamagnetism that might have potential applications in medicine. Furthermore, the developed synthesis route may provide an important guidance for the preparation of other multifunctional hollow spherical materials.

scholarly journals Synthesis and luminescent properties of uniform monodisperse LuPO 4 :Eu 3+ /Tb 3+ hollow microspheres

2017 ◽  
Vol 4 (12) ◽  
pp. 171451 ◽  
Author(s):  
Yu Gao ◽  
He Yu ◽  
Cheng Shi ◽  
Guiyan Zhao ◽  
Yanfeng Bi ◽  
...  
Keyword(s):  
Large Scale ◽  
Exchange Process ◽  
Scale Up ◽  
Luminescent Properties ◽  
Inorganic Materials ◽  
Hollow Microspheres ◽  
Scale Production ◽  
Simple Method ◽  
Synthetic Process ◽  
Ion Exchange Process

Uniform monodisperse LuPO 4 :Eu 3+ /Tb 3+ hollow microspheres with diameters of about 2.4 µm have been successfully synthesized by the combination of a facile homogeneous precipitation approach, an ion-exchange process and a calcination process. The possible formation mechanism for the hollow microspheres was presented. Furthermore, the luminescence properties revealed that the LuPO 4 :Eu 3+ and LuPO 4 :Tb 3+ phosphors show strong orange-red and green emissions under ultraviolet excitation, respectively, which endows this material with potential application in many fields, such as light display systems and optoelectronic devices. Since the synthetic process can be carried out at mild conditions, it should be straightforward to scale up the entire process for large-scale production of the LuPO 4 hollow microspheres. Furthermore, this general and simple method may be of much significance in the synthesis of many other inorganic materials.

SIX®: A New Resin Treatment Technology for Drinking Water

2009 ◽  
Vol 4 (4) ◽  
Author(s):  
Gilbert Galjaard ◽  
Peer C. Kamp ◽  
Erik Koreman
Keyword(s):  
Drinking Water ◽  
Ion Exchange ◽  
Large Scale ◽  
Exchange Process ◽  
Polymeric Materials ◽  
Treatment Technology ◽  
Ion Exchange Process ◽  
New Process ◽  
History Of ◽  
Research Facilities

The history of ion exchange is marked by many important milestones, notably the development of novel polymeric materials and considerable advances in our understanding of the underlying fundamental principles. Separately, there have been major advances in the design and development of the apparatus and equipment required to perform industrial ion exchange and also for large scale applications in the production of drinking water, like the MIEX® process from Orica. This paper reviews the progress that has been made during the last three years within the research facilities of PWN which have resulted in a new ion exchange process for the direct treatment of water containing high amounts of suspended matter such as surface waters. This new process has been called SIX® and will most likely be operational at a flow of 4000 m3/h by 2012.

Sign in / Sign up

Export Citation Format

Share Document