Investigation of Structural and Luminescent Properties of Sol-Gel-Derived Cr‑Substituted Mg3Al1-xCrx Layered Double Hydroxides.
作者： Inga Grigoraviciute-Puroniene , Aleksej Zarkov , Aivaras Kareiva , Arturas Katelnikovas , Ligita Valeikiene
DOI: 10.3390/MOLECULES26071848
关键词: Visible spectrum 、 Microstructure 、 Sol-gel 、 Photoluminescence 、 Nuclear chemistry 、 Layered double hydroxides 、 Chromium 、 Materials science 、 Luminescence 、 Doping
摘要: In the present work, Cr-substituted Mg3Al1-xCrx layered double hydroxides (LDHs) were synthesised through phase conversion of sol-gel-derived mixed-metal oxides in an aqueous medium. The chromium substitution level range 1 to 25 mol% was investigated. It demonstrated that all specimens single-phase LDHs. results elemental analysis confirmed suggested synthetic sol-gel chemistry approach is suitable for preparation LDHs with a highly controllable chemical composition. surface microstructure does not depend on level. formation plate-like agglomerated particles, which consist hexagonally shaped nanocrystallites varying size from approximately 200 300 nm, observed. Optical properties investigated by means photoluminescence. All Cr-containing powders exhibited characteristic emission red region visible spectrum. strongest observed sample doped 5 Cr3+ ions. However, intensity samples 1-10 ions relatively similar. A further increase ion concentration resulted severe quenching.
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sci-hub.st 参考文章(44)
Mihaela Jitianu, Maria Zaharescu, Marina Bãlãsoiu, Andrei Jitianu, The sol-gel route in synthesis of Cr(III)-containing clays. Comparison between Mg-Cr and Ni-Cr anionic clays Journal of Sol-Gel Science and Technology. ,vol. 26, pp. 217- 221 ,(2003) , 10.1023/A:1020747031524
F Lahoz, IR Martın, J Mendez-Ramos, P Nunez, None, Dopant distribution in a Tm3+–Yb3+ codoped silica based glass ceramic: An infrared-laser induced upconversion study The Journal of Chemical Physics. ,vol. 120, pp. 6180- 6190 ,(2004) , 10.1063/1.1652016
Andrey I. Tsyganok, Mieko Inaba, Tatsuo Tsunoda, Kunio Uchida, Kunio Suzuki, Katsuomi Takehira, Takashi Hayakawa, Rational design of Mg–Al mixed oxide-supported bimetallic catalysts for dry reforming of methane Applied Catalysis A-general. ,vol. 292, pp. 328- 343 ,(2005) , 10.1016/J.APCATA.2005.06.007
Lagnamayee Mohapatra, K.M. Parida, Zn―Cr layered double hydroxide: Visible light responsive photocatalyst for photocatalytic degradation of organic pollutants Separation and Purification Technology. ,vol. 91, pp. 73- 80 ,(2012) , 10.1016/J.SEPPUR.2011.10.028
F. Melo, N. Morlanés, Study of the composition of ternary mixed oxides: Use of these materials on a hydrogen production process Catalysis Today. ,vol. 133, pp. 374- 382 ,(2008) , 10.1016/J.CATTOD.2007.12.059
Zhuang Zhang, Guangming Chen, Jingang Liu, Tunable photoluminescence of europium-doped layered double hydroxides intercalated by coumarin-3-carboxylate RSC Advances. ,vol. 4, pp. 7991- 7997 ,(2014) , 10.1039/C3RA46930A
Xiaorui Gao, Lixu Lei, Lianwei Kang, Yuqiao Wang, Yiwei Lian, Kangle Jiang, Synthesis, characterization and optical properties of a red organic–inorganic phosphor based on terephthalate intercalated Zn/Al/Eu layered double hydroxide Journal of Alloys and Compounds. ,vol. 585, pp. 703- 707 ,(2014) , 10.1016/J.JALLCOM.2013.09.168
Fathi Kooli, Cristina Martín, Vicente Rives, FT-IR Spectroscopy Study of Surface Acidity and 2-Propanol Decomposition on Mixed Oxides Obtained upon Calcination of Layered Double Hydroxides Langmuir. ,vol. 13, pp. 2303- 2306 ,(1997) , 10.1021/LA960583J
Poernomo Gunawan, Rong Xu, Lanthanide-Doped Layered Double Hydroxides Intercalated with Sensitizing Anions: Efficient Energy Transfer between Host and Guest Layers Journal of Physical Chemistry C. ,vol. 113, pp. 17206- 17214 ,(2009) , 10.1021/JP905884N
R. D. Shannon, Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides Acta Crystallographica Section A. ,vol. 32, pp. 751- 767 ,(1976) , 10.1107/S0567739476001551