The separation efficiency for electron-hole HSP990 ic50 was enhanced

when alpha-Bi2O3 was doped with Pr. The photocatalytic activities, which were evaluated by degradation of Rhodamine B (RhB) and 2,4-dichlorophenol (2,4-DCP) under visible light irradiation, was enhanced significantly by doping Pr into alpha-Bi2O3.

CONCLUSION: Doping alpha-Bi2O3 with Pr significantly enhanced the photocatalytic activity. The optimum percentage of doped pr was 3.0 mol %. center dot OH radicals were the dominant photooxidant. This study demonstrates an efficient pathway to improve the photocatalytic performance of alpha-Bi2O3. (C) 2013 Society of Chemical Industry”
“Effect of B content on the magnetic properties, phase evolution, magnetic after effect, and the activation energy (E(a)) for the melt- spun [(Fe(0.7)Co(0.3))(0.725)Pt(0.275)](100-x)B(x) (x=14-18) ribbons has been investigated. Sufficient amount of boron addition effectively decreases the activation energy of ordering transformation, and also refines the grain size of the studied ribbons after thermal annealing, resulting in the improvement of (i)H(c) from 3.4 kOe for x=14 to 6.2 kOe for

x=18. The highest permanent magnetic properties of B(r)=10.1 kG, (i)H(c)=5.4 kOe, and (BH)(max)=15.7 MGOe can be achieved in [(Fe(0.7)Co(0.3))(0.725)Pt(0.275)](85)B(15) ribbons. Meanwhile, the magnetic after effect study evidences that the activation volume is reduced with the increase in B content from V=41.33×10(-19)

cm(3) for x=14 to V=21.71×10(-19) AC220 inhibitor cm(3) for x=18, arisen from the lower volume fraction of magnetically soft phases and the stronger exchange-coupling Etomoxir effect between magnetic grains. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3068466]“
“BACKGROUNDOligoamides containing intramolecular hydrogen bonds have proved to be excellent extractants for metal cations, but their polymeric counterparts have never been used. Thorium separation from rare earth elements has long been a research subject due to its importance in nuclear energy and metallurgy. In this work a novel polyaramide has been synthesized and investigated for solvent extraction and separation of thorium and rare earths.

RESULTSThe synthesized polymer 1 [(C32H46N2O6)(n)], shows a high extractability of 89.4% towards Th(IV) compared with only 36-48% for rare earths. The optimized pH value for extraction of Th(IV) was 3.97. At C-1/C-M = 2.0, the extraction for Th(IV) reached 95.1%. When adding NaNO3, the separation of Th(IV) from La(III) is more efficient than that from Eu(III) or Yb(III), especially at higher NaNO3 concentration. Th(IV) can be thoroughly stripped from organic phase at 1.50molL(-1) HNO3 concentration.

CONCLUSIONDirect condensation of aromatic diamine and diacid led to a novel polyaramide with introverted chelating groups.