Data on characterization, model, and adsorption rate of banana peel activated carbon (Musa Acuminata) for adsorbents of various heavy metals (Mn, Pb, Zn, Fe).

This research contains data on the adsorption test and characterization of banana peel activated carbon as an adsorbent for water contaminated with various heavy metals. Banana peel is a common post-harvest waste, making it easy to obtain. Atomic Absorption Spectroscopy (AAS) is used to investigate the various heavy metal content in polluted water that are harmful to health, such as Mn, Fe, Zn, and Pb in concentrations of 1.351; 1.210; 17.403; and 0.210 mg/L, respectively. These metals exceed the standard limits for clean water quality that are suitable for sanitation hygiene purposes. Banana peel activated carbon samples were tested in polluted water and re-examined using AAS. The parameters used to calculate the percent adsorption of the four heavy metals were variations in adsorbent mass (0.5; 1.0; 1.5; 2.0 g), stirring speed (50; 100; 150; 200; 250 rpm), pH (4; 5; 6; 7; 8; and contact time (30; 60; 90; 120; 150 min). Scanning Electron Microscopy/X-Ray Spectroscopy Energy Dispersion (SEM/EDS) and X-Ray Diffraction (XRD) were used to characterize and determine the morphology, material content, and crystal structure formed by the samples. Brunaurer, Emmet, and Teller/Barret, Joyner, and Halenda (BET/BJH) were used to investigate the surface area, pore size, and isotherm type. This dataset is publicly available for researchers to optimize the potential of banana peel activated carbon as an adsorbent of heavy metals (Mn, Pb, Zn, Fe) in the industrial sector.

The loading effect of Pt clusters on Pt/graphene nano sheets catalysts.

In this paper, we report about chemically interaction between Pt Subnano-Clusters on Graphene Nano Sheets (GNS). The aim of this research is to clarify the size effect of Pt clusters on Pt 1-7 wt.%/GNS. This research is an experimental laboratory research. GNS was synthesized by using modified Hummer's method and 1-7 wt.% Pt/GNS were prepared with impregnation method. Then, they were analyzed with TG/DTA, XRD, TEM and XPS, respectively. The results show that Pt clusters are well deposited on GNS (TG/DTA and TEM data). Those data also are consistent with XRD data. The weak and broad peaks appear at 2θ = 39°, indicating Pt metal exists on GNS. The state of Pt is confirmed by using XPS. The appearance of Pt 4f. peaks proves that Pt metal is chemical interaction on GNS. The size of Pt clusters may affect the chemically properties of Pt/GNS catalysts.