Piezocatalytic degradation of 2,4-dichlorophenol in a water environment by a g-C₃N₄/CdS heterojunction catalyst: interfacial electric field boosting mechanism

Abstract

Graphitic carbon nitride (GCN) has been explored as a potential piezocatalyst to degrade environmental contaminants through harvesting mechanical energy. However, the low crystalline level and its uniplanar hydrogen bond induce...

Boosting pollutant degradation with simultaneous H2O2 production from its electron delocalization and excitation co-triggered by microelectric field and visible light

“…The peaks located at 13.4° and 27.4° correspond to the characteristic (100) in-plane packing and (002) interlayer stacking of g-C 3 N 4 , respectively. 37 Compared with CN, the (100) and (002) peak intensities of the RSN samples decrease slightly, which is attributed to the increasing layer distance and formation of pores on the RSN surface, confirmed by SEM and TEM (Fig. S1†).…”

Green Photocatalytic Route To Synthesize Cross-Linked Polyacrylamide Flocculant for Flocculation of High Turbid Wastewater

“…The characteristic FTIR absorption of CNCs (Figure S5) at 1600–1200 and 810 cm –1 is related to stretching vibrations of the heterocyclic CN ring and the out-of-plane bending vibration of the triazine unit. , In addition, the wide absorption band at 3000–3450 cm –1 (centered at ∼3200 cm –1 ) was assigned to the stretching vibration modes of N–H and O–H, originating from the terminal amino group and the hydrolysis of bridging linked C–N–C unit in alkaline solution. , The FTIR spectrum of PAM in Figure a presents the absorption bands at the wavenumbers of 3415 cm –1 (main peak)/3185 cm –1 (shoulder peak), 2930 and 1665 cm –1 , which respectively corresponded to N–H, −CH 2 and CO stretching vibrations in PAM. , As exhibited in Figure a, the relative strength at ∼3200 cm –1 (g-C 3 N 4 ) to ∼3400 cm –1 (PAM) gradually increased with the increase in the CNC content in the flocculant. Meanwhile, the step-by-step increment of the absorption from CNPAM2.5 to CNPAM4.5 at ∼1610 cm –1 (CN) and 1430 cm –1 (C–N) also confirms the successful incorporation of CNCs into the flocculant …”

“…32,33 In addition, the wide absorption band at 3000−3450 cm −1 (centered at ∼3200 cm −1 ) was assigned to the stretching vibration modes of N−H and O−H, originating from the terminal amino group and the hydrolysis of bridging linked C−N−C unit in alkaline solution. 34,35 The FTIR spectrum of PAM in Figure 2a presents the absorption bands at the wavenumbers of 3415 cm −1 (main peak)/3185 cm −1 (shoulder peak), 2930 and 1665 cm −1 , which respectively corresponded to N−H, −CH 2 and C�O stretching vibrations in PAM. 25,36 As exhibited in Figure 2a, the relative strength at ∼3200 cm −1 (g-C 3 N 4 ) to ∼3400 cm −1 (PAM) gradually increased with the increase in the CNC content in the flocculant.…”