Enhanced photocatalytic activity and diode performance of ZnO‐GO nanocomposites via doping with aluminum

Abstract

Herein, a twofold enhancement tactics were served to boost the photocatalytic activity as well as the diode performance of ZnO. The combination of aluminum (Al) and graphene oxide (GO) with ZnO fostered photocatalytic efficiency on Cong red (CR) and magnified the rectification of The Ag/n-Zn 1Àx Al x O-GO/ p-Si/Al heterostructure diode. Zn 1Àx Al x O-GO nanocomposites (x = 0.0, 0.03, 0.05, and 0.07 mol, GO = 2 wt.%) were successfully synthesized by solvothermal approach as confirmed by X-ray diffraction (XRD), high-resolution transmission microscope (HRTEM), Fourier transformer infrared (FTIR) and Raman data. The grain size was found to decrease from 38.05 to 68.58 nm when Al was varied from 0.0 to 0.07 mole, as established from the size-strain plot and FESEM micrographs. The data of Raman and FT-IR evidenced the existence of Al in the ZnO matrix. The band gap energies were found to approach the boundary of visible light, as Al reached 0.07 mol. The photocatalysis experiments showed that Zn 0.93 Al 0.07 O-GO nanocomposite has a higher removal efficiency. The scavenging investigation proved that the h + and OHȧ re major reactive radicals. The recycling test demonstrated Zn 0.93 Al 0.07 O-GO nanocomposite showed a high level of reusability. The Ag/n-Zn 1Àx Al x O-GO/p-Si/Al heterostructure diode was fabricated. The rectification and shunt resistance was boosted, whilst barrier height, ideality factor, and series resistance were decreased with the insertion of Al.

Nanosynthesis and Characterization of Cu1.8Se0.6S0.4 as a Potential Cathode for Magnesium Battery Applications

“…As can be noted, the surface becomes much smoother in a magnetized state. The roughness has been determined as described previously, , and it has been found that the roughness values of the pristine, magnetized, and demagnetized Cu 1.8 Se 0.6 S 0.4 electrodes are 14.49, 11.71, and 14.18 nm, respectively. The reduction in the roughness of the magnetized sample may be due to the change of the form from a nanosphere to a nanoflower.…”

An investigation of structural, optical, and electrical properties of poly(3‐hexylthiophene)/reduced graphene oxide nanocomposites for electronic and optoelectronic applications

“…The influence of rGO on the roughness of the P 3HT can be examined by the surface 3D view of the FESEM, as shown in Figure 5C,D. The root means square roughness( R q ) and the average roughness ( R a )was estimated from the line profile manifested in Figure 5E,F, by employing the below formulas 51,52 : $$$$ {R}_q=\sqrt{\frac{\sum \limits_{i=1}^N{\left({Z}_i-{Z}_a\right)}^2}{N},} $$$$ $$$$ {R}_a=\sqrt{\frac{\sum \limits_{i=1}^N\left|{Z}_i-{Z}_{\mathrm{cp}}\right|}{N},} $$$$ where Z i is the current Z value, Z a denotes the average Z value of the investigated area, N expresses the number of points, and Z cp is the Z value of the center plane 53 . The R q and R a for pristine were found to be 13.3 and 12.65 nm, whereas rGO/P3HT (10 wt5%) have higher roughness of about 21.25 and 19.56 nm.…”

“…Figure 5C,D. The root means square roughness(R q ) and the average roughness (R a )was estimated from the line profile manifested in Figure 5E,F, by employing the below formulas 51,52 :…”

Fabrication and characterization of (PVDF/PEO)/AgBiSe2 polymeric membrane with enhanced visible light photocatalytic performance

“…Maxilon blue dye was used as a model organic pollutant and its structure is represented in Figure 1. The photodegradation experiments were conducted to evaluate the photocatalytic performance of AgBiSe 2 /PVDF/PEO membranes, a 200 mL beaker containing a 50 mg/L Maxilon blue dye solution was maintained in the dark for 30 min while being stirred by a magnetic stirrer to establish adsorption–desorption equilibrium 40 . After that, solar light was directed straight down onto the beaker.…”

“…The photodegradation experiments were conducted to evaluate the photocatalytic performance of AgBiSe 2 /PVDF/PEO membranes, a 200 mL beaker containing a 50 mg/L Maxilon blue dye solution was maintained in the dark for 30 min while being stirred by a magnetic stirrer to establish adsorption-desorption equilibrium. 40 After that, solar light was directed straight down onto the beaker. A 5-ml aliquot of the reaction solution was obtained to determine the efficacy of the decolorization.…”