Covalent organic frameworks (COFs) have received broad interest owing to their permanent porosity, high stability, and tunable functionalities. COFs with long-range π-conjugation photosensitizing building blocks been explored for sustainable photocatalysis. Herein, we report the first example of COF-based energy transfer Ni catalysis. A pyrene-based COF sp2 carbon-conjugation was synthesized us...

backgrounds and aims: the purpose of this study was to examine the effects of potassium, sodium and zinc metal ions on ammonium sulfate fraction of acid phosphatase activity of orange fruit. materials and methods: acid phosphatase was extracted and purified from orange fruit and then various samples as well as a control sample were prepared in vitro. in addition to substrates, ions of potassium...

in this research, chitosan was used for the removal of cr (vi) ions from aqueous solution. the effect of parameters like solution ph, initial cr (vi) concentration, agitation time, amount of adsorbent and agitation speed on the adsorption process was studied. the experimental equilibrium data were analyzed by using various models such as langmuir and freundlich. freundlich isotherm model fitted...

Interacting supernovae (SNe) IIn and Ibn show narrow emission lines have always been a mysterious unsolved genre in SNe physics. We present comprehensive analysis of the temporal spectroscopic behaviour group interacting SNe~IIn Ibn. choose SNe~2012ab, 2020cui, 2020rc 2019uo as representative members these SN sub-types to probe nature explosion. Our study reveals that are heterogeneous, bright ...