Green and scalable synthesis of nanosilver loaded silica microparticles by spray-drying: application as antibacterial agent, catalyst and SERS substrate

Sarkar, D.; Khare, Devanshi; Kaushal, Amit; Acharya, Celin; Bahadur, Jitendra; Prakash, Jyoti; Donthula, Harish; Dasgupta, Kinshuk

doi:10.1007/s13204-019-01031-3

Cited by 14 publications

(11 citation statements)

References 67 publications

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“…When polymers, complex ligands, or surfactants are used as the stabilizer or to prevent coalescence of the nanoparticles, the catalytic ability is usually decreased due to reduced adsorption ability. In general, silver nanoparticles are mostly used with titanium dioxide as the catalyst for chemical reactions [22,23].…”

Section: Silver Toxicity and Applicationsmentioning

confidence: 99%

The importance of silver nanoparticles in human life

2020

Advances in Applied NanoBio-Technologies

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One nanomaterial that is having an early impact in health care product is nano-silver. Silver has been used for the treatment of medical ailments for over 100 years due to its natural antibacterial and antifungal properties. The nano silver particles typically measure 25nm. They have extremely large relatively surface area, increasing their contact with bacteria or fungi, and vastly improving its bactericidal and fungicidal effectiveness. The nano silver when in contact with bacteria and fungus will adversely affect cellular metabolism and inhibit cell growth. The nano silver suppresses respiration, basal metabolism of electron transfer system, and transport of substrate in the microbial cell membrane. The nano silver inhibits multiplication and growth of those bacteria and fungi which cause infection, odor, itchiness and sores. Nano Silver can be applied to range of other healthcare products such as dressings for burns, scald, skin donor and recipient sites; acne and cavity wounds; and female hygiene products – panty liners, sanitary towels and pants.

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Section: Silver Toxicity and Applicationsmentioning

confidence: 99%

The importance of silver nanoparticles in human life

2020

Advances in Applied NanoBio-Technologies

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“…Mesoporous microparticles enable convenient integration of nanomaterials with popular manufacturing methods based on micron-scale powders. Applications of mesoporous microparticles include drug delivery, − chemical sensors, − catalytic structures, − and energy devices. − The application performance depends upon the architecture of the nanostructure where the transport and storage of drugs or intercalation of ions are influenced by the pathways and interfaces. The presence of a less-porous skin layer can further tailor chemical transport rates to/from the microparticle, for example, adjusting the rate of controlled release. − ,,, Thus, the ability to custom tailor each aspect of the mesoporous microparticle architecture determines the ultimate performance.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous TiO₂ Microparticles with Tailored Surfaces, Pores, Walls, and Particle Dimensions Using Persistent Micelle Templates

et al. 2021

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Mesoporous microparticles are an attractive platform to deploy high-surface-area nanomaterials in a convenient particulate form that is broadly compatible with diverse device manufacturing methods. The applications for mesoporous microparticles are numerous, spanning the gamut from drug delivery to catalysis and energy storage. For most applications, the performance of the resulting materials depends upon the architectural dimensions including the mesopore size, wall thickness, and microparticle size, yet a synthetic method to control all these parameters has remained elusive. Furthermore, some mesoporous microparticle reports noted a surface skin layer which has not been tuned before despite the important effect of such a skin layer upon transport/encapsulation. In the present study, material precursors and block polymer micelles are combined to yield mesoporous materials in a microparticle format due to phase separation from a homopolymer matrix. The skin layer thickness was kinetically controlled where a layer integration via diffusion (LID) model explains its production and dissipation. Furthermore, the independent tuning of pore size and wall thickness for mesoporous microparticles is shown for the first time using persistent micelle templates (PMT). Last, the kinetic effects of numerous processing parameters upon the microparticle size are shown.

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“…We are surrounded by the antimicrobial applications of nanosilver, in our daily necessities, textile clothing, and cosmetics, as well as in our air-conditioners and washing machines [ 1 ]. When nanosilver is used as an antimicrobial agent, it may also be hazardous to the environment and the ecology [ 2 , 3 ]. The FDA has warned that ingesting the nanosilver colloids may cause poisoning.…”

Section: Introductionmentioning

confidence: 99%

A Study of Nanosilver Colloid Prepared by Electrical Spark Discharge Method and Its Antifungal Control Benefits

et al. 2021

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This is a study of an antimicrobial test, including yeast, Aspergillus Niger, and Aspergillus Flavus, on a nanosilver colloid solution. The antibiosis is compared with a standard silver ion solution at the same concentration as in the experimental process. This study proved that the nanosilver colloid prepared by the electrical spark discharge method (ESDM) is free of any chemical additives, has a microbial control effect, and that the effect is much better than the Ag+ standard solution at the same concentration. 3M Count Plate (YM) is used to test and observe the colony counts. The microbial control test for yeast, Aspergillus Niger, and Aspergillus Flavus is implemented in the nanosilver colloid. In addition to Aspergillus flavus, an Ag+ concentration of 16 ppm is enough to inhibit the growth of the samples. At the same concentration, the nanosilver colloid has a much better microbial control effect than the Ag+ standard solution, which may be because the nanoparticle can release Ag+ continuously, so the solution using the ESDM has a more significant microbial control effect.

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Green and scalable synthesis of nanosilver loaded silica microparticles by spray-drying: application as antibacterial agent, catalyst and SERS substrate

Cited by 14 publications

References 67 publications

The importance of silver nanoparticles in human life

The importance of silver nanoparticles in human life

Mesoporous TiO₂ Microparticles with Tailored Surfaces, Pores, Walls, and Particle Dimensions Using Persistent Micelle Templates

A Study of Nanosilver Colloid Prepared by Electrical Spark Discharge Method and Its Antifungal Control Benefits

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Green and scalable synthesis of nanosilver loaded silica microparticles by spray-drying: application as antibacterial agent, catalyst and SERS substrate

Cited by 14 publications

References 67 publications

The importance of silver nanoparticles in human life

The importance of silver nanoparticles in human life

Mesoporous TiO2 Microparticles with Tailored Surfaces, Pores, Walls, and Particle Dimensions Using Persistent Micelle Templates

A Study of Nanosilver Colloid Prepared by Electrical Spark Discharge Method and Its Antifungal Control Benefits

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Mesoporous TiO₂ Microparticles with Tailored Surfaces, Pores, Walls, and Particle Dimensions Using Persistent Micelle Templates