Nanoarchitectured nickel phosphate integrated with graphene oxide for the toxicant diphenylamine detection in food samples

Enhanced Isopropyl Alcohol Conversion over Acidic Nickel Phosphate-Supported Zeolite Catalysts

“…As can be seen in Figure 3 b, the apparent new peaks were clearly observed at 2335 cm –1 , corresponding to the (P)–OH group vibration. 59 Furthermore, the peak at 763 cm –1 was attributed to the vibration deformation of the P–O–P group, 39 , 60 whereas the peaks at 921, 983, and 1436 cm –1 were assigned to the asymmetric bending vibrations of phosphate ions. 24 , 31 According to these results, the modification of zeolite using nickel and nickel phosphate was successfully accomplished.…”

Construction of Sr@Mn3O4/GO nanocomposite: a synergistic electrocatalyst for nitrofurantoin detection in biological and environmental samples

“…The calculated slope value of −0.038 was switched in the Nernst equation and was used to find the m / n ratio (eqn (3)): 8,18 where m and n signify the number of H + and electrons (e − ) that are involved in the NFT reduction, and m / n is calculated to be −64 mV pH −1 , closer to the Nernstian value of −59 mV pH −1 , representing an equal number of e − and H + involved in the electro-reduction of NFT. 7 Moreover, Fig.…”

“…On the other hand, a higher concentration could substantially obstruct the NFT movements, leading to somewhat slower responses. 8,66 LOD and quantification limit (LOQ) were estimated by eqn (14) and (15): 18,66 where s represents the slope value obtained from the DPV calibration plot, and m represents the standard deviation of the ten blank measurements. The calculated LOD, LOQ, and sensitivity of the Sr@Mn 3 O 4 /GO/GCE for NFT were around 0.0024 μM, 0.0329 μM, and 1.733 μA μM −1 cm −2 , respectively.…”

“…42 The dispersing and stabilizing properties can be improved by GO support with different nanostructured materials. 18 In addition, GO is a layered structure that can be exfoliated or intercalated by tiny molecules. These exfoliated GO sheets with appropriate surface areas can be employed as suitable materials for loading metal or metal oxide particles, resulting in composites being efficient electrocatalysts for sensors.…”

“…15,16 Among them, electrochemical sensing provides many benefits such as simplicity, robustness, easy construction and operation, good sensitivity, fast response, better stability, and excellent detection limits. 17,18 Many electrochemical sensors have been developed for the determination of NFT. [19][20][21][22] However, these methods still do not meet all the requirements for highly sensitive, practical, fast, and inexpensive detection of NFT.…”