Abstract
A method to count the number of electrons accumulated in carbon nitride green radicals using a methylviologen redox indicator is reported.
Highlights
Photocatalysis has become a topical eld of research in organic chemistry starting from the beginning of 21st century due to its simple reaction conditions and omnitude.[1]
K-PHI was characterized using different techniques and the summary is given in Fig. S2 and S3.†19 The number and position of diffraction peaks in the PXRD pattern are identical to the ones reported earlier (Fig. S2a†).[20,21]
The valence band maximum (VBM) in K-PHI determined by ultraviolet photoelectron spectroscopy (UPS) is located at $2.5 V (Fig. S2e†)
Summary
Photocatalysis has become a topical eld of research in organic chemistry starting from the beginning of 21st century due to its simple reaction conditions and omnitude.[1]. It has been reported that cyanamide groups in poly(heptazine imide) are responsible for electron accumulation.[8,21] In the case of K-PHI, a deeper reaction mixture colour was observed in the presence of CO2 (the interaction between CO2 and benzylamine is investigated below), which correlates with a higher electron capacity of 957 Æ 82 mmol gÀ1 compared to 701 Æ 46 mmol gÀ1 under Ar. the electron capacity of K-PHI under Ar using benzylamine as an electron donor is still 5.8 times higher compared to that using benzyl alcohol as an electron donor.[9] This illustrates the much better ability of amines to quench reductively the excited state of the carbon nitride photocatalyst.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
