Visible light degradation of reactive black-42 by novel Sr/Ag-TiO2@g-C3N4 photocatalyst: RSM optimization, reaction kinetics and pathways

The performance of TiO2 /NaY-zeolite nanocomposite in photocatalytic degradation of Microcystin-LR from aqueous solutions: Optimization by response surface methodology (RSM)

“…Response surface methodology (RSM) is a statistical and experimental strategy to get the optimum conditions for a multivariable system and it has been successfully applied to different photocatalytic processes for achieving its optimization using experimental designs. RSM is a suitable strategy which can improve a system and enhance the efficiency of the process without increasing the cost (34,35). So, in this study, in order to determine the optimum conditions for MC-LR removal by the TiO 2 /NaY-zeolite (T/N-Z) nanocomposite under UV light, RSM based on the central composite design (CCD) was used.…”

KOH-Activated Geopolymer Microspheres Recycle Co(II) with Higher Adsorption Capacity than NaOH-Activated Ones

“…Their shapes reflect the degree of interactions with high precision. 24 For example, circular contours represent weak interactions, while elliptical contours denote strong interactions. The shapes of the Na-SGM depicted in Figure 5 a,e,i of the interactions between A and B are mostly stepped and elliptical, followed by B and C , and finally, A and C .…”

“…By utilizing Design-Expert V8.0.6.1 software, the three-dimensional (3D) surface and contours for each factor and Co­(II) adsorption capacity was generated (see Figure ). Their shapes reflect the degree of interactions with high precision . For example, circular contours represent weak interactions, while elliptical contours denote strong interactions.…”

“…Their shapes reflect the degree of interactions with high precision. 24 For example, circular contours represent weak interactions, while elliptical contours denote strong interactions. The shapes of the Na-SGM depicted in Figure 5a,e,i of the interactions between A and B are mostly stepped and elliptical, followed by B and C, and finally, A and C. The shapes of K-SGM depicted in Figure 5k, which describes the interactions between A and B, are less stepped and elliptical 25 than those presented in Figure 5c (describing the interactions between B and C).…”

In situ formation of 2-thiobarbituric acid incorporated g-C3N4 for enhanced visible-light-driven photocatalytic performance

“…As depicted in Fig. 2a, all the samples possessed two typical diffraction peaks of graphitic materials at around 12.9 and 27.5 , corresponding to the (100) and (002) crystal facets (JCPDS 87-1526), 26 which suggested that the original crystal structure of CN was largely intact aer the introduction of small amounts of TBA. Specically, the front peak was related to the in-plane repeating motifs of tri-s-triazine, while the subsequent peak was attributed to the repeated interfacial stacking of the conjugated aromatic system in the CN nanosheets, respectively.…”