scholarly journals Metal ‘turn-off’, anion ‘turn-on’ gelation cascade in pyridinylmethyl ureas

2017 ◽  
Vol 53 (12) ◽  
pp. 2024-2027 ◽  
Author(s):  
Caroline A. Offiler ◽  
Christopher D. Jones ◽  
Jonathan W. Steed
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Sol Gel ◽  
Transition Metal Ions ◽  
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Pyridinylmethyl urea gels are weakened or destroyed by addition of transition metal ions but gelation is recovered by adding bromide giving rise to a gel–sol–gel chemically triggered cascade.

Luminescence and surface effects of closed-shell transition metal ions in sol-gel silica glasses

1997 ◽  
Vol 72-74 ◽  
pp. 417-418 ◽  
Author(s):  
Markus Herren ◽  
Kenji Yamanaka ◽  
Naoya Miyazaki ◽  
Makoto Morita
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Sol Gel ◽  
Surface Effects ◽  
Closed Shell ◽  
Transition Metal Ions ◽  
Silica Glasses

Experimental and Theoretical Study on Transition Metal Ion Doped TiO2

2011 ◽  
Vol 233-235 ◽  
pp. 2219-2222 ◽  
Author(s):  
Xue Chun Zhong ◽  
Zhan Chang Pan ◽  
Zhi Gang Wei ◽  
Shu Guang Xie ◽  
Zhen Jun Cheng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Anatase Phase ◽  
Sol Gel ◽  
Transition Metal Ions ◽  
Transition Metal Ion ◽  
Visible Light Range ◽  
Visible Spectra ◽  
Uv Visible

In this paper, TiO2crystallines doped with transition metal ions have been prepared by sol-gel method. The UV-visible spectra indicated that the doping with transition metal ions (especially Cu2+, Mn2+and Cr3+ions) could effectively improve the absorption of TiO2crystals in the visible-light range. The XRD results showed that the doping does not affect the anatase phase of TiO2. The band structure and the UV-vis absorption spectrum of Mn2+ions doped-TiO2were also calculated by DFT (density function theory) method, which indicated that the doping with transition metal ion could make the band gap of TiO2smaller and a red shift in optical absorption.

Ratiometric and turn-on monitoring for heavy and transition metal ions in aqueous solution with a fluorescent peptide sensor

Talanta ◽  
2009 ◽  
Vol 78 (3) ◽  
pp. 903-909 ◽  
Author(s):  
Bishnu Prasad Joshi ◽  
Junwon Park ◽  
Wan In Lee ◽  
Keun- Hyeung Lee
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
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Fluorescent Peptide

Reduced fluorenoazomethine based photoluminescence turn-on sensors for transition metal ions

RSC Advances ◽  
2014 ◽  
Vol 4 (64) ◽  
pp. 33955 ◽  
Author(s):  
Pradip Kr. Dutta ◽  
Snigdha Panda ◽  
Debangshu Chaudhuri ◽  
Sanjio S. Zade
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
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Sol–gel synthesis of transition-metal ion conjugated alumina-rich mullite nanocomposites with potential mechanical, dielectric and photoluminescence properties

RSC Advances ◽  
2015 ◽  
Vol 5 (126) ◽  
pp. 104299-104313 ◽  
Author(s):  
Arpan Kool ◽  
Pradip Thakur ◽  
Biswajoy Bagchi ◽  
Nur Amin Hoque ◽  
Somtirtha Banerjee ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Sol Gel ◽  
Transition Metal Ions ◽  
Photoluminescence Properties ◽  
Transition Metal Ion ◽  
Sol Gel Synthesis

Mechanical, dielectric and photoluminescence properties of transition-metal ions doped mullite nanocomposite synthesized via alkoxide hydrolysis.

Hybrid sol–gel coatings doped with transition metal ions for the protection of AA 2024-T3

2012 ◽  
Vol 61 (3) ◽  
pp. 600-612 ◽  
Author(s):  
Alexandra Wittmar ◽  
Matthias Wittmar ◽  
Alfred Ulrich ◽  
Hinka Caparrotti ◽  
Michael Veith
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Sol Gel ◽  
Transition Metal Ions ◽  
Aa 2024

scholarly journals Study of Photocatalytic Activity and Properties of Transition Metal Ions Doped Nanocrystalline TiO2Prepared by Sol-Gel Method

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
K. S. Siddhapara ◽  
D. V. Shah
Keyword(s):  
Photocatalytic Activity ◽  
Transition Metal ◽  
Metal Ions ◽  
Uv Light ◽  
Sol Gel ◽  
Visible Region ◽  
Transition Metal Ions ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method

Transition metal (Mn, Fe, Co,) doped TiO2nanoparticles were synthesized by the sol-gel method. All the prepared samples were calcined at different temperatures like 200°C to 800°C and characterized by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analysis. The studies revealed that transition metal (TM) doped nanoparticles have smaller crystalline size and higher surface area than pure TiO2. Dopant ions in the TiO2structure caused significant absorption shift into the visible region. The results of photodegradation of formaldehyde in aqueous medium under UV light showed that photocatalytic activity of TiO2nanoparticles was significantly enhanced by the presence of some transition metal ions. Chemical oxygen demand (COD) of formaldehyde solutions done at regular intervals gave a good idea about mineralization of formaldehyde.

Click synthesized dianthryl–TTFV: an efficient fluorescent turn-on probe for transition metal ions

2012 ◽  
Vol 10 (13) ◽  
pp. 2542 ◽  
Author(s):  
Karimulla Mulla ◽  
Prateek Dongare ◽  
David W. Thompson ◽  
Yuming Zhao
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Transition Metal Ions ◽  
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