Dinuclear uranium(VI) salen coordination compound: an efficient visible-light-active catalyst for selective reduction of CO2 to methanol
al.,, Mohammad Azam, Umesh Kumar, Joshua O. Olowoyo, Saud I. Al-Resayes, Agata Trzesowska-Kruszynska, Rafal Kruszynski, Mohammad Shahidul Islam, Mohammad Rizwan Khan et . 2020
A new dinuclear uranyl salen coordination compound, [(UO2)2(L)2]·2MeCN [L = 6,6’-((1E,1’E)-((2,2-dimethylpropane-
1,3-diyl)bis(azaneylylidene))-bis(methaneylylidene))bis(2-methoxyphenol)], was synthesized
using a multifunctional salen ligand to harvest visible light for the selective photocatalytic reduction of CO2
to MeOH. The assembling of the two U centers into one coordination moiety via a chelating–bridging
doubly deprotonated tetradentate ligand allowed the formation of U centers with distorted pentagonal
bipyramid geometry. Such construction of compounds leads to excellent activity for the photocatalytic
reduction of CO2, permitting a production rate of 1.29 mmol g−1 h−1 of MeOH with an apparent quantum
yield of 18%. Triethanolamine (TEOA) was used as a sacrificial electron donor to carry out the photocatalytic
reduction of CO2. The selective methanol formation was purely a photocatalytic phenomenon and
confirmed using isotopically labeled 13CO2 and product analysis by 13C-NMR spectroscopy. The spectroscopic
studies also confirmed the interaction of CO2 with the molecule of the title complex. The results of
these efforts made it possible to understand the reaction mechanism using ESI–mass spectrometry.
Lead (Pb2+) pollution is a serious food safety issue, rapid detection of Pb2+ residual in food is vital to guarantee food quality and safety. Here we proposed ratiometric aptamer probes, allowing…
The halal food market is globally growing along with the increased risk of adulteration. We proposed an amplificationfree
and mix-to-read CRISPR-Cas12-based nucleic acid analytical strategy…