Table 1 The FT-IR analysis was done to identify different organic species present in the aqueous product, collected from the microreactor operating at 2.5–3.0 V.

Assigned Peak no. in Fig. 4	Peak position in Fig. 4 (cm⁻¹)	Assigned functional groups	Classification of the Organic compounds likely to present as end product⁴²	Vibration mode	Typical vibrational frequency range (cm⁻¹)⁴²	Peak intensity
1	3454	O–H	Dimeric Alcohols/phenols	Stretching	3584–3230	Strong
2	2922	–CH₂–	Alkane	Stretching	2924–2859	Strong
3	2859	–O–CH₃	Ether	Stretching	2924–2859	Strong
4	2859	–CHO	Aldehydes	Stretching	2924–2859	Strong
5	2361	C=NH⁺	NH⁺ Charged amines	Stretching	2500–2325	Weak
6	1632	C=C	Non-conjugated Alkene	Stretching	1635	Strong
7	1401	C–H	Esters	Bending	1430–1400	Weak
8	1314	C–OH	Primary alcohols	Stretching	1350–1260	Weak
9	1257	C–O	Esters of aromatic acids	Stretching	1300–1250	Weak
10	1181	C–O	Higher Esters	Stretching	1200–1170	Weak
11	1100	C–OH	Secondary alcohols	Stretching	1120–1100	Weak

The table shows the classification of the various functional groups based upon the peak positions in the FT-IR spectra reported in Fig. 4

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