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CuS/quitosano compuesto: material de doble función para la degradación de colorante azul de metileno y la

T Naga Krishna^1,2,3, B V Tirupanyam⁴

¹Department of Physics, Adikavi Nannaya University, Rajamahendravaram, Andhra Pradesh, 533296, India. t.nagakrishna@gmail.com.

|February 7, 2026

Resumen

Se sintetizaron compuestos de sulfuro de cobre (CuS)/quitosano para la degradación fotocatalítica del colorante azul de metileno y usos antimicrobianos. El compuesto mostró una degradación completa del colorante y una actividad antibacteriana significativa, lo que resalta su potencial ambiental y biomédico.

Área de la Ciencia:

Ciencia de los materiales
Ciencias ambientales
Biotecnología

Sus antecedentes:

La contaminación por colorante azul de metileno (MB) presenta riesgos ambientales.
El desarrollo de fotocatalizadores eficientes y reutilizables es crucial para la remediación del agua.
Se necesitan agentes antimicrobianos para combatir las infecciones bacterianas.

Objetivo del estudio:

Sintetizar y caracterizar compuestos de CuS/quitosano.
Evaluar su actividad fotocatalítica para la degradación del colorante MB bajo luz visible.
Evaluar su eficacia antimicrobiana contra bacterias comunes.

Principales métodos:

Síntesis hidrotermal de compuestos de CuS/quitosano.
Caracterización mediante microscopía electrónica de barrido (SEM) y mapeo elemental.
Experimentos de degradación fotocatalítica con colorante MB.
Pruebas de actividad antimicrobiana contra Escherichia coli y Streptococcus aureus.

Principales resultados:

Nanopartículas de CuS integradas con éxito en la matriz de quitosano.
El compuesto exhibió una cristalinidad mejorada y un tamaño de cristalito más pequeño (20,8 nm) en comparación con el CuS puro (24,4 nm).
Se logró una degradación completa del colorante MB con el compuesto, superando al CuS puro (84%).
El compuesto mostró una excelente reutilización durante seis ciclos.
Se observó una actividad antibacteriana significativa contra E. coli (zona de inhibición de 19 mm) y S. aureus (zona de inhibición de 20 mm).

Conclusiones:

Los compuestos de CuS/quitosano son efectivos para la degradación fotocatalítica del colorante MB bajo luz visible.
El compuesto demuestra potentes propiedades antibacterianas.
Estos hallazgos sugieren el potencial de los compuestos de CuS/quitosano para la remediación ambiental y las aplicaciones biomédicas.

Palabras clave:

Actividad antimicrobiana CuS/quitosano Degradación de azul de metileno Nanocompuesto Iluminación con luz visible

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