Magnetic activated carbon (KAM) is used as an absorbent or adsorbent based on coconut shell which has been with sodium bicarbonate. The added to the iron composite produces KAM. content in ability absorb and facilitate separation process adsorbate. purpose of this study was determine adsorbate, namely pyrrole monomer compound. characterized using Fourier Transform Infra-Red (FTIR) instrument fu...

A continuum, post-deposition mesoscopic model of a Moir\'e-regulated self-assembly metal nanoclusters on twisted bilayer graphene is presented. Quasi-two-dimensional nanocluster-like steady states at low adsorbate coverage are analytically determined for Pt, Ni, and Pb adsorbates, pointing that self-assemble the Moir\'e cells centers. This followed by computations dynamics. Differences in effic...

Ultrafast electron transfer between adsorbed organic molecules and metal substrates is studied. In particular, the dynamics of active in nitroethylene anion/metal-copper surface system has been followed real time using a wave packet propagation approach, allowing rigorous analysis decay molecule-localized electronic resonances. We find that strong coupling with substrate leads to an extremely s...

We have developed theoretical methods to calculate photoinduced electron dynamics in nanostructured materials such as nanoparticles, quantum-dot arrays, and adsorbate-surface systems. Specifically, we have developed generalized theory of a light-matter interaction beyond a dipole approximation on the basis of the multipolar Hamiltonian with the aim of understanding the near-field excitation of ...

In present work, comparative study of sorption potential raw and chemically activated orange peel powder has been explored for the removal arsenite ions (As III) from wastewater. Several operating parameters such as contact time, adsorbent dose, adsorbate ion concentration, solution pH well temperature were studied in batch reactor. Surface physicochemical analysis was done by using FTIR (Fouri...

Mutagenicity of activated carbon adsorbate from drinking water collected in Niigata City was assayed by the Ames assay. Adsorbate was extracted from activated carbon with benzene, and then with ethanol. Although the benzene extract was not mutagenic, the ethanol one showed the mutagenic activity for Salmonella typhimurium strains TA98 and TA100 with and without S9 mix. The ethanol extract was m...

Four sulfur-containing compounds important to tropospheric chemistry have been examined at the vapor/H2O and vapor/D2O interfaces. These adsorbates, DMS, DMSO, DMSO2, and DMSO3, were studied by surface tension and vibrational sum-frequency spectroscopy (VSFS). Each adsorbate is surface active and each orients with the hydrophobic methyl groups pointed out of the plane of the interface. Their in...

We present scanning tunneling microscopy experiments and density functional theory calculations which reveal a unique mechanism for the formation of hydrogen adsorbate clusters on graphite surfaces. Our results show that diffusion of hydrogen atoms is largely inactive and that clustering is a consequence of preferential sticking into specific adsorbate structures. These surprising findings are ...

As models for substances adsorbed within amorphous solid matrices, we consider mixtures of spheres with either hard or ideal interactions where several (matrix) components are quenched and the remaining (adsorbate) components are equilibrated. We propose a density-functional theory, based on the exact zero-dimensional limit, which treats both matrix and adsorbate components on the level of the ...

Stochastic wave function formalism is briefly introduced and applied to study the dynamics of open quantum systems; in particular, diffusion Xe atoms adsorbed on a Pt(111) surface. By starting from Lindblad functional within microscopic Caldeira–Leggett model for linear dissipation, stochastic differential equation (Ito^-type equation) straightforwardly obtained. The so-called intermediate scat...