Nanomaterials (NMs) are gaining significance in technological applications due to their tunable chemical, physical, and mechanical properties and enhanced performance when compared with their bulkier counterparts. This review presents a summary of the general types of NMs and provides an overview of the various synthesis methods of nanoparticles (NPs) and their functionalization via covalent or noncovalent interactions using different methods. It highlights the techniques used for the characterization of NPs and discusses their physical and chemical properties. Due to their unique properties, NMs have several applications and have become part of our daily lives. As a result, nanotoxicity research is gaining attention since some NPs are not easily degraded by the environment. Thus, this review also highlights research efforts into the fate, behavior, and toxicity of different classes of NMs in the environment.

Nanomaterials: Classification, properties, and environmental toxicities

Functionalized mesoporous silica nanoparticles and biomedical applications.

Porous aerogel and core/shell nanoparticles for controlled drug delivery: A review.

Carbon dioxide (CO2) capture and storage have been suggested as an effective strategy to reduce global greenhouse gas emissions. In recent years, many studies were carried out to develop highly efficient materials, such as zeolites, porous carbons, metal-organic frameworks (MOFs) and metal oxides for capturing CO2. In addition, interest in studying amine species grafting with mesoporous materials to improve CO2 capture by amino groups have increased tremendously. These modified materials provide excellent CO2 uptake capacity, fast adsorption kinetics and easy regeneration with stable cycling performance. Not to mention, the utilisation of adsorbents derived from biomass sources for CO2 capture under low adsorption temperature and ambient pressure was recently reported by many researchers. Such adsorbents are desirable for its high surface area, less energy consumption, less expenses during regeneration and highly available. Herein, mesoporous materials are thoroughly described for CO2 capture under mild condition (ambient temperature and pressure). In addition, a recommendation of characteristics and properties for effective porous adsorbent, functionalisation of amine groups, and utilisation of biomass-based adsorbent were reviewed in this work. A concise conclusion and future outlook was also proposed.

Mesoporous adsorbent for CO2 capture application under mild condition: A review

Mesoporous silica nanoparticles (MSNPs) are a particular example of innovative nanomaterials for the development of drug delivery systems. MSNPs have recently received more attention for biological and pharmaceutical applications due to their capability to deliver therapeutic agents. Due to their unique structure, they can function as an effective carrier for the delivery of therapeutic agents to mitigate diseases progress, reduce inflammatory responses and consequently improve cancer treatment. The potency of MSNPs for the diagnosis and management of various diseases has been studied. This literature review will take an in-depth look into the properties of various types of MSNPs (e.g. shape, particle and pore size, surface area, pore volume and surface functionalisation), and discuss their characteristics, in terms of cellular uptake, drug delivery and release. MSNPs will then be discussed in terms of their therapeutic applications (passive and active tumour targeting, theranostics, biosensing and immunostimulative), biocompatibility and safety issues. Also, emerging trends and expected future advancements of this carrier will be provided.

Mesoporous silica nanoparticles: synthesis methods and their therapeutic use-recent advances.

Synthesis Methods of Mesoporous Silica Materials

Synthesis of high surface area mesoporous silica materials using soft templating approach

Properties and Applications of Polymer Matrix Nano Composite Materials

Optical studies of MWCNT doped boron carbon oxynitride (BCNO) nano composite phosphor material

The present work reports a novel, eco-friendly green synthesis method for non-toxic BCNO nano phosphor material achieving high 79% Quantum Yield(QY). In this process, Boric acid (Halt;subagt;3alt;/subagt;BOalt;subagt;3alt;/subagt;), Urea (NHalt;subagt;2alt;/subagt;CONHalt;subagt;2alt;/subagt;) and Lemon Aqueous extract (LAE) were used as precursors. The B/N ratio was fixed at 2mol and the concentration of LAE was varied. As-prepared phosphor material was characterized using XRD, FTIR, SEM, AFM, UV-Visible and Photo-luminescence (PL) spectroscopy. Characterization results confirm the formation of blue emitting BCNO nano phosphor with Hexagonal Boron Nitride (h-BN) phase structure. The crystallinity, PL intensity and QY of nano phosphor increased with increasing LAE concentration up to an optimum value (20%v/v) and further decreased for its higher concentration. AFM and TEM images show homogeneously dispersed uniform nanoparticles with an average size of 51.67 nm. The decay profile shows short and long decay time, (τalt;subagt;1alt;/subagt;, τalt;subagt;2alt;/subagt;) respectively in nanoseconds.

Sunil Kumar

Papers

Synthesis Methods of Mesoporous Silica Materials

Synthesis of high surface area mesoporous silica materials using soft templating approach

Properties and Applications of Polymer Matrix Nano Composite Materials

Optical studies of MWCNT doped boron carbon oxynitride (BCNO) nano composite phosphor material

Optical properties of BCNO nano phosphor synthesized using novel green technology