Characterization of Brazilian palygorskite (Guadalupe region)and adsorptive behaviour for solvatochromic dyes (Record no. 54382)

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fixed length control field 02351nam a2200289Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625162446.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-20283
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245 10 - TITLE STATEMENT
Title Characterization of Brazilian palygorskite (Guadalupe region)and adsorptive behaviour for solvatochromic dyes
490 0# - SERIES STATEMENT
Volume/sequential designation Clay Minerals, 56(1), p.55-64, 2021
520 3# - SUMMARY, ETC.
Summary, etc. This work presents the results of the physical characterization of palygorskite and its adsorptive behaviour for three solvatochromic dyes (Nile blue chloride (NBC), methylene blue (MTB)and dithizone (DTZ)). Adsorption isotherms were used to determine the maximum adsorption of the solvatochromic dyes on the palygorskite. The characterization of palygorskite was carried out via mineralogical and chemical analysis with X-ray diffraction, X-ray fluorescence, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy, surface-charge measurement (?-potential), thermogravimetric analysis, textural analysis and cation-exchange capacity analysis. The material consists of palygorskite and quartz and its chemistry is dominated by SiO2, MgO and Fe2O3. The specific surface area and cation-exchange capacity of the palygorskite are 142 m2 g-1 and 41 cmol(+)kg-1, respectively. The SEM and TEM analyses showed a fibrous structure with fibres 20-100 nm long. The thermogravimetric analysis showed three endothermic events at 57.3°C, 171.8°C and 439.6°C. The adsorption capacities of the palygorskite for NBC (basic pH), MTB (basic pH)and DTZ (neutral pH)were 0.082, 0.013 and 0.102 g g-1, respectively. The adsorptions of NBC and MTB were fitted with the Langmuir isotherm model and the adsorption of DTZ was fitted with the Sips model.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ADSORPTION ON MATERIALS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element NANOTECHNOLOGY
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PALYGORSKITE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element SOLVATOCHROMIC DYES
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name De Souza, C. G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name De Jesus, T. C. L.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Dos Santos, R. C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Bomfim, L. M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Bertolino, L. C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name De Andrade, D. F.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Spinelli, L. S.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1GlEM2m6ns_s3_QzQ5MkR8o4PI_USpR-e/view?usp=drivesdk">https://drive.google.com/file/d/1GlEM2m6ns_s3_QzQ5MkR8o4PI_USpR-e/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-20283 25.06.2025 25.06.2025 Documentos solicitados