Fluorescent antimicrobial hydrogel based on fluorophore N-doped carbon dots originated from cellulose nanocrystals.

The current study represents a unique fabrication strategy for preparation of fluorescent hydrogels via incorporation of fluorescent quantum dots (QDs) as fluorophore entities into chitosan as a gelling matrix. QDs identified as carbon quantum dots (CQDs) & nitrogen containing carbon quantum dots (NCQDs) were preliminary synthesized from cellulose nanocrystals (CNCs) and cationic cellulose nanocrystals (CCNCs), respectively. Cationic CNCs was prepared via chemical grafting with poly-di-allyl dimethyl ammonium chloride (CNCs-g-poly-DADMAC) through free chain polymerization reaction.

Bio-fabrication of biologically active copper nanocomposite.

Green routes for nucleation of nanostructures are recently applied for the biomedical applications, due to their affinity and feasibility. For instance, copper nanostructures are applicable for inhibition of microbial infections and ulcers. Hereby, this work is aimed at investigation for the possible contribution of Sidr honey (SH) in the formation of copper based-nanocomposites (Cu@SH).

Surface Passivation of Carbon Dots for Tunable Biological Performance.

Recent investigations were shifted this trend toward exploring the biomedical applicability of CDs, relevant to chronic diseases. Herein, a systematic approach is demonstrated for studying the effect of variation in the surface passivation of CDs for tuning its optical character and biological performance. Alginate and pectin were successfully clustered oxygen-surface passivated CDs, while, chitin was used to nucleate nitrogen-surface passivated CDs.

Nano-scaled polyacrylonitrile for industrialization of nanofibers with photoluminescence and microbicide performance.

Nanofibers are investigated to be superiorly applicable in different purposes such as drug delivery systems, air filters, wound dressing, water filters, and tissue engineering. Herein, polyacrylonitrile (PAN) is thermally treated for autocatalytic cyclization, to give optically active PAN-nanopolymer, which is subsequently applicable for preparation of nanofibers through solution blow spinning. Whereas, solution blow spinning is identified as a process for production of nanofibers characterized with high porosity and large surface area from a minimum amounts of polymer solution.

Involvement of silver and palladium with red peanuts skin extract for cotton functionalization.

A systematic study is currently demonstrated approach for approving the superior role of silver and palladium metallic particles in acting the role of mordant with acquiring the dyed cotton fabrics excellence in color fastness with additional functions of antimicrobial potentiality and UV-protection action. Whereas, samples were dyed with extract of red peanuts skin as natural textile colorant (RPN dye). The represented data revealed that, in absence of mordant, the samples treated with metal precursors prior to dyeing were exhibited with the excellent color strength, color fastness, antimicrobial action and UV-protection action.

Selective separation of chlorophyll-a using recyclable hybrids based on Zn-MOF@cellulosic fibers.

Chlorophyll-a as pigments, exist in the green organelles for plants that act in photosynthesis. Different studies were considered with demonstration of an effective separation technique of Chlorophyll-a without decomposition; however, the reported methods were disadvantageous with expensiveness and low quantum yield. The current work uniquely represents an investigative method for the separation of Chlorophyll-a from spinach extract using cellulosic hybrids based on ZIF-8 @cellulosic fibers (Zn-zeolitic imidazolate frameworks@cellulosic fibers) as a cost effective and recyclable absorbents.

Affinity of carbon quantum dots anchored within metal organic framework matrix as enhancer of plant nourishment.

Nano-fertilizers were ascribed to be significantly advantageous with minimizing the negative effects of requiring excessive contents in the soil and reducing the number of times for fertilization. Herein, the superior affinity of carbon quantum dots (CQDs) anchored within metal organic framework (Cu-BTC) matrix was investigated for the first time as a fertilizer for sunflower. CQDs were nucleated from alkali-hydrolyzed carboxymethyl cellulose (CMC) via the hydrothermal technique.

Maillard reaction for nucleation of polymer quantum dots from chitosan-glucose conjugate: Antagonistic for cancer and viral diseases.

Polymer dots (PDs) ingrained from biopolymers are characterized by their biocompatibility & non-toxicity to be superiorly applicable for biomedicines. The point of novelty in the current study is to focus on the effect of Maillard reaction for conjugation of chitosan with glucose to enhance the affinity of chitosan as a biological resource of PDs. Chitosan-glucose conjugate was firstly prepared by Maillard reaction.

Technical textiles modified with immobilized carbon dots synthesized with infrared assistance.

Carbon quantum dots "CQDs" were investigated as photo-luminescent nanomaterials as it advantageous with nontoxicity to be alternative for metallic-nanomaterials in different purposes. Therefore, the presented report demonstrates an innovative strategy for industrialization of antimicrobial/fluorescent cotton textiles via exploitation of "CQDs". Unique/novel infrared-assisted technique was currently investigated for clustering "CQDs" form carboxymethyl cellulose.

Melt intercalation technique for synthesis of hetero-metallic@chitin bio-composite as recyclable catalyst for prothiofos hydrolysis.

The compatibility of homo-metallic and hetero-metallic bio-composite was promisingly investigated as recyclable catalyst for prothiofos hydrolysis. Chitin as water insoluble biopolymer was functionalized as a template for generation of homo-metallic (Ag@chitin, Au@chitin and Pd@chitin) and hetero-metallic (Au@Ag@chitin, Pd@Ag@chitin and Pd@Au@Ag@chitin) composites, by using melt intercalation technique. Investigation of the compatibility of the synthesized homo-metallic and hetero-metallic bio-composites in hydrolysis of prothiofos was performed and affirmed via HPLC results.

Antitumor/antiviral carbon quantum dots based on carrageenan and pullulan.

Requirement for medication from pathogenic human viruses and cancer diseases are urgently considered, while, numerous reports were focused on investigating easily manufactured and excellently effective therapeutic reagents. Herein, CQDs were prepared with size of 2.1 nm from both of carrageenan and pullulan.

Environmentally exploitable biocide/fluorescent metal marker carbon quantum dots.

Carbon quantum dots are currently investigated to act as safe/potent alternatives for metal-based nanostructures to play the role of probes for environmental applications owing to their low toxicity, low cost, chemical inertness, biocompatibility and outstanding optical properties. The synthesis of biocide/fluorescent metal marker carbon quantum dots with hydrophilic character was performed a quite simple and green technique. The natural biopolymer that was used in this study for the synthesis of carbon quantum dots is fragmented under strong alkaline conditions.

Acacia gum versus pectin in fabrication of catalytically active palladium nanoparticles for dye discoloration.

Obedience to the aspects of green chemistry and due to its high catalytic potency, ecofriendly synthesis of palladium nanoparticles (PdNPs) was performed using pectin versus acacia gum as polysaccharides. The viscous solution of alkali solubilized polysaccharides acted superiorly in stabilization of MNPs by decreasing their Brownian motions and sequentially decreased their collision and coagulation. Production of PdNPs preliminary was confirmed via UV-visible spectra.

Metal-dependent nano-catalysis in reduction of aromatic pollutants.

Nanostructures have great potential in catalysis and their compositions may cause some interferences in the reactivity. Therefore, the present study focuses on comparison between three metallic nanoparticle-based Ag, Au, and Pd as nano-catalyst in reduction of aromatic pollutants. To neglect any interpenetration in their catalytic reactivity, the metallic nanoparticles were prepared via a consistent and reproducible one-step method with alkali-activated dextran.

pH responsive intelligent nano-engineer of nanostructures applicable for discoloration of reactive dyes.

Multifunctional polymers were commonly ascribed as intelligent materials due to the presence of different functional groups on the polymeric skeleton which causes the high sensitivity to the interchanging of physicochemical conditions. Herein, under different temperatures, monitoring the pH response of lignin as intelligent nano-engineer (reducer and stabilizer) for synthesis of size and shape regulated silver nanoparticles (AgNPs), gold nanoparticles (AuNPs) & palladium nanoparticles (PdNPs) is systematically studied. The regulation of the particle size and stability of NPs were remarkably affected by acidity and basicity of the reaction medium at which they were prepared.

Non-invasive route for desulfurization of fuel using infrared-assisted MIL-53(Al)-NH containing fabric.

Fuel purification from sulfur containing contaminants (SCCs) is concerned in the last decades. Herein, non-invasive and innovative method was carried out for synthesis of metal organic framework (MOF)@fabric composites to be applied in removing of thiophene from liquid fuel. MIL-53(Al)-NH as a type of MOF was selected to be in-situ prepared within fabrics (cotton & wool) by infrared-assisted technique.

Recruitment of various biological macromolecules in fabrication of gold nanoparticles: Overview for preparation and applications.

This review summarizes recent works for fabrication of gold nanoparticles with controlled shape, size, and functional properties using polysaccharides as superior biological macromolecules. Special consideration is paid to the synthesis of gold nanoparticles with individual (non-aggregated) nanoparticles, narrow size distribution and regulated morphologies, including the design of nanoparticles and nanocomposites that can be applied in multifunctional purposes. The current review also focused on the problem of the spatial arrangement for nanoparticles and predication of the role of polysaccharide macromolecular structure as nano-template in this process because it is a key problem in nanoparticles industrialization, and presented the synergistic role of the ingredients on the performance of gold nanocomposites.

Comparative study between homo-metallic & hetero-metallic nanostructures based agar in catalytic degradation of dyes.

Herein, comparison between eco-friendly homo-metallic (Ag) and hetero-metallic (AgAu and Ag-Au-Pd) nanostructures in catalysis was studied. The homo-metallic and hetero-metallic nanostructures were greenly synthesized using Agar as nano-generator. The sequential reduction of metal ions to give homo- and hetero-metallic nanostructures was initially confirmed via UV-Visible spectra.

Hydroxyethyl cellulose for spontaneous synthesis of antipathogenic nanostructures: (Ag & Au) nanoparticles versus Ag-Au nano-alloy.

The current approach represents a controllable strategy for studying the antipathogenic effects against selected bacterial strains and fungi for silver nanoparticles and gold nanoparticles versus their bimetallic nano-alloys spontaneously prepared by the same technique. Spontaneous ingraining of silver and gold based monometallic and bimetallic nano-objects was carried out by employing organic polymer of hydroxyethyl cellulose which was presumed to play the dual role of nanogenerator and surfactant, via seed mediated growth technique. Revolution of UV-Visible spectroscopy revealed that, the characteristic surface plasmon resonance (SPR) peak for Ag-Au bimetallic nano-alloy was detected at 480-495 nm and X-ray diffraction patterns confirmed the successive role of HEC in generation of bimetallic nanostructures.

Cluster growth adaptor for generation of bactericide Ag-Au bimetallic nanostructures: substantiation through spectral mapping data.

Bimetallic nanostructures have emerged up as unique nano-objects due to the synergism between two metallic nanostructures. In the current approach, bactericide silver- gold bimetallic nanostructures have been fabricated using guar gum, which is employed as cluster growth adaptor. Silver‑gold bimetallic nanostructures were initially detected with the aid of UV-Visible spectrophotometer, where, the characteristic Surface Plasmon Resonance peak for bimetallic nanostructures was detected at 480-495 nm.

Nanosilver leverage on reactive dyeing of cellulose fibers: Color shading, color fastness and biocidal potentials.

The current approach focuses on studying the leverage of nanosilver (AgNPs) incorporation on the dyeing process of viscose fibers by blue reactive dye. Nanosilver was straightway incorporated into viscose fibers using sodium citrate as nanogenerator. Owing to AgNPs incorporation, color of fibers was turned to greenish-blue and darker greenish color was observed with low Ag content (<1 g/kg).

Carboxymethyl cellulose macromolecules as generator of anisotropic nanogold for catalytic performance.

Morphological structure and size of Au nanoparticles (AuNPs) are basically affected on their chemical reactivity which are influenced by preparation method due to including different materials and may cause some interferences in their reactivity. Hence, current work focused on preparation of anisotropic AuNPs with astonishing catalytic reactivity, using carboxymethyl cellulose (CMC) macromolecules, as generator and shape conductor. Geometrical shape and size distribution of the so-obtained AuNPs were found to be dependent on CMC concentration and addition of alkali.