J. A. S. Costa

Publications25
h-index10
Citations309
Highly Influential Citations5
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Systematic evaluation of amorphous silica production from rice husk ashes
Abstract Amorphous silica (SiO2) was extracted from the rice husk ashes (RHAs) of the agulhinha and cateto varieties. Optimized time, temperature, extractor concentration, and reaction time for a… Expand
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Investigating the potential of functionalized MCM-41 on adsorption of Remazol Red dye
The modification of MCM-41 was performed with 3-aminopropropyltrimethoxysilane. The structural order and textural properties of the synthesized materials were studied by X-ray diffraction, Fourier… Expand
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Efficient adsorption of a mixture of polycyclic aromatic hydrocarbons (PAHs) by Si-MCM-41 mesoporous molecular sieve
Abstract This work describes the synthesis of Si–MCM–41 mesoporous adsorbent by a hydrothermal method and its characterization using FTIR, XRD, N2 adsorption/desorption, SEM, TGA, and EDX analyses.… Expand
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Recent progresses in the adsorption of organic, inorganic, and gas compounds by MCM-41-based mesoporous materials
Abstract Adsorbent mesoporous materials are highly efficient for the remediation of different compounds in environmental applications such as organic, inorganic, and gas molecules. These compounds… Expand
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Organically modified sepiolite: Thermal treatment and chemical and morphological properties
Abstract The modification of sepiolite is one of the aspects well established in literature aiming to broaden the range of applications of this material. Additionally, in some requests, e.g. in… Expand
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Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene
The mesoporous materials MCM-41 and the functionalized inorganic–organic material p-aminobenzoic acid-MCM-41 (PABA-MCM-41) were used as adsorbents to remove the PAHs benzo[k]fluoranthene and… Expand
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Photoluminescent properties of the europium and terbium complexes covalently bonded to functionalized mesoporous material PABA-MCM-41
Abstract In this study, we describe the synthesis of the functionalized inorganic-organic material p -aminobenzoic acid MCM-41 by modification from p -aminobenzoic acid (PABA) and the covalently… Expand
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Dual emission tunable in the near-infrared (NIR) and visible (VIS) spectral range by mix-LnMOF.
In this study, we describe the synthetic approach, crystallographic structure, luminescent behavior and elucidation of the channels of the energy conversion in heteronuclear coordination polymers… Expand
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Evaluation of MCM-41 and MCM-48 mesoporous materials as sorbents in matrix solid phase dispersion method for the determination of pesticides in soursop fruit (Annona muricata)
Abstract The MCM-41 and MCM-48 mesoporous materials were tested for extraction of thiamethoxam, thiacloprid, thiophanate-methyl, teflubenzuron, and bifenthrin from the fruit of soursop (Annona… Expand
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A new functionalized MCM-41 mesoporous material for use in environmental applications
Este trabalho descreve a sintese e caracterizacao de um novo adsorvente mesoporoso que consiste o MCM-41 funcionalizado com o acido p-aminobenzoico modificado (PABA-Si). A sintese foi realizada pelo… Expand
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