Fe-Mediated Tweaking of Band Bending and Activation Energy in α-MoO Nano Lamella for Enhanced NO Gas Detection Under Low Operating Temperature.

Concern over increasing pollution and ways to mitigate it is in high demand due to the swift advancement of technology and the creation of advanced utilities. Nitrogen oxide (NO) is a well-known evolved toxin that poses a threat to human health, the environment, and biodiversity. Therefore, several works are carried to sense the NO gas at its trace concentration.

A BiTe topological insulator/carbon nanotubes hybrid composites as a new counter electrode material for DSSC and NIR photodetector application.

Two-dimensional layered bismuth telluride (BiTe), a prominent topological insulator, has garnered global scientific attention for its unique properties and potential applications in optoelectronics and electrochemical devices. Notably, there is a growing emphasis on improving photon-to-electron conversion efficiency in dye-sensitized solar cells (DSSCs), prompting the exploration of alternatives to noble metal catalysts like platinum (Pt). This study presents the synthesis of BiTe and its hybrid nanostructure with single-wall carbon nanotubes (SWCNT) via a straightforward hydrothermal process.

Harnessing ZnCrO/g-CN nanosheet heterojunction for enhanced photocatalytic degradation of rhodamine B and ciprofloxacin.

Utilizing semiconductors for photocatalytic processes in water bodies as an approach to environmental remediation has gained considerable attention. Theoretical band position calculations revealed a type-II step-scheme charge flow mechanism for ZnCrO/g-CN (ZCr/gCN), emphasizing effective heterojunction formation due to synergies between the materials. A composite of agglomerated nanoparticle ZnCrO (Zinc chromium oxide - ZCr)/g-CN (graphitic carbon nitride - gCN) nanosheets was synthesized using the ultrasonication and leveraging the heterojunction to enhance degradation efficiency and active sites participation.

Ultrasensitive and reversible NO gas sensor based on SnS/TiO heterostructures for room temperature applications.

Nitrogen dioxide (NO) is one of the toxic gases produced by chemical industries, power plants, and vehicles. In this work, we demonstrate an inexpensive sensing platform for NO detection at room temperature (RT-32 °C) based on a charge transfer mechanism. Three-dimensional hierarchical SnS and SnS/mesoporous TiO nanocomposites were synthesized via the solvothermal method.

Multiple approaches of band engineering and mass fluctuation of solution-processed n-type Re-doped MoS nanosheets for enhanced thermoelectric power factor.

The thermoelectric (TE) performance of Molybdenum disulpide (MoS) can be improved by the incorporation of nanomaterials. MoS has been reported as promising thermoelectric materials due to their large bandgap and low thermal conductivity. In the present work, n-type MoS was successfully synthesized by facile hydrothermal route with an excellent thermoelectric performance by introducing rhenium (Re) dopant.

Solvent-assisted synthesis of AgSe and AgS nanoparticles on carbon fabric for enhanced thermoelectric performance.

The challenge of developing low-cost, highly flexible, and high-performance thermoelectric (TE) materials persists due to the low thermoelectric efficiency of conducting polymers and the inflexibility of inorganic materials. In this study, we successfully integrated AgSe and AgS with highly conductive carbon fabric (CF) to produce a flexible thermoelectric material. A facile one-step solvothermal method was employed to synthesize the AgSe-CF and AgS-CF, which were then subjected to X-ray analysis to confine the phase formation of AgSe and AgS on the carbon fabric.

Ultra-high power factor of p-type BiSe for room-temperature thermoelectric applications.

Achieving high in n-type and p-type thermoelements in similar compounds is a great challenge for device construction. Herein, we report a high-power factor of 480 μW/mK in Ga and Mn co-doped BiSe along with a maximum of 0.25 at 303 K as a p-type thermoelement.

Small polaron hopping conduction mechanism and enhanced thermoelectric power factor in the perovskite LaCoO ceramic.

Among the various thermoelectric oxide materials, perovskites offer more flexibility to adjust the interdependent thermoelectric parameters for an improved thermoelectric performance. In this work, we investigated the effect of A-site cation deficiency and Sr-substitution on the thermoelectric properties of the LaCoO ceramic synthesized a solid-state reaction. A rhombohedral crystal structure with the 3̄ space group was revealed through Rietveld refinement of the XRD data.

Cost-effective dye-sensitized solar cells based on rutile-phase three-dimensional TiO hierarchical nanostructures.

Specifically engineered three-dimensional (3D) and 1D morphologies are expected to play significant roles in the development of next-generation dye-sensitized solar cells. In this study, using a hydrothermal approach without a surfactant or template, we attempted to synthesize a 3D hierarchical rutile titanium dioxide (TiO ) architecture by varying the growth temperature and time. X-ray diffraction patterns of the synthesized TiO correlated well with rutile TiO .

Realization of an ultra-low lattice thermal conductivity in BiAgSe nanostructures for enhanced thermoelectric performance.

Bismuth Selenide is a Tellurium free topological insulator in V-VI compounds with an excellent thermoelectric performance from room temperature to mid-temperature region. Herein, hydrothermally prepared polycrystalline BiAgSe nanostructures have been reported for thermoelectric application. The crystal structure identification and morphology with the elemental presence were analyzed by XRD (X-ray diffraction), HR-SEM with EDS (High resolution scanning electron microscope with energy dispersive X-ray), and HR-TEM (High-resolution transmission electron microscope) measurements.

Plasmon Effect of Ag Nanoparticles on TiO/rGO Nanostructures for Enhanced Energy Harvesting and Environmental Remediation.

We report Ag nanoparticles infused with mesosphere TiO/reduced graphene oxide (rGO) nanosheet (TiO/rGO/Ag) hybrid nanostructures have been successfully fabricated using a series of solution process synthesis routes and an in-situ growth method. The prepared hybrid nanostructure is utilized for the fabrication of photovoltaic cells and the photocatalytic degradation of pollutants. The photovoltaic characteristics of a dye-sensitized solar cell (DSSC) device with plasmonic hybrid nanostructure (TiO/rGO/Ag) photoanode achieved a highest short-circuit current density () of 16.

Suppression of intrinsic thermal conductivity in Sr Gd TiO ceramics phonon-point defect scattering for enhanced thermoelectric application.

A substantial reduction in the thermal conductivity for strontium titanate (ABO) perovskite structure was realized for the A-site substitution of gadolinium (rare earth element) in SrTiO ceramics. The effect of Gd substitution on the structure, composition, and thermoelectric properties of SrTiO was investigated. The substitution of Gd in the SrTiO matrix resulted in the minimalization of thermal conductivity.

Enhancement of thermoelectric power factor via electron energy filtering in Cu doped MoS on carbon fabric for wearable thermoelectric generator applications.

The design and construction of state-of-the-art wearable thermoelectric materials are important for the development of self-powered wearable thermoelectric generators (WTEGs). Molybdenum disulfide (MoS) has been reported as a noteworthy thermoelectric (TE) material because of its large intrinsic bandgap and high carrier mobility. In this work, Cu-doped two-dimensional layered MoS nanosheets were grown on carbon fabric (CF) via a hydrothermal method.

Investigation of non-covalent interactions in Polypyrrole/Polyaniline/Carbon black ternary complex for enhanced thermoelectric properties via interfacial carrier scattering and π-π stacking.

The thermoelectric (TE) performance of conducting polymers can be improved by the incorporation of carbon nanomaterials. In this work, the impact of carbon black (CB) on polypyrrole (PPy) and polypyrrole/polyaniline (PPy/PANI) binary composite have been investigated. Herein, PPy/PANI binary composite was initially prepared through chemical oxidative polymerization and then solution mixed with CB to form PPy/PANI/CB ternary nanocomposite.

Boosting the energy density of supercapacitors by constructing hybrid molybdenum disulphide nanostructures as a highly durable novel electrode.

Hierarchical MoO@MoS/rGO nanocomposites with highly active sites deliver high power density and energy density are fabricated here by using a simple two-step process, the first one is a direct anion-exchange reaction of the inorganic MoO nanorods (NRs) for growth of few-layered MoS nanosheets in a perpendicular direction and other is the composition of rGO sheets with core-shell MoO@MoS. Interestingly, how the modification of hybrid solvent in the anion-exchange mechanism and the concentration of thiourea impact on the morphologies of core-shell MoO@MoS at quantum level have been inspected. A fruitful synergistic effect between MoO/MoS core-shell nanostructures and rGO nanosheets led to a high surface area and transporting properties are inspected obviously through fundamental studies.

Oxide-based catalysis: tailoring surface structures organic ligands and related interfacial charge carrier for environmental remediation.

Hierarchical nanostructures and the effects of ligands on their structure formation were investigated. Morphological analysis showed the change in the morphology from nanospindles to hollow hexagonal nanodisks with the change in ligands. Structural analysis exhibited the formation of both hexagonal ZnO and monoclinic CuO structures in the composition.

Interface enriched highly interlaced layered MoS/NiS nanocomposites for the photocatalytic degradation of rhodamine B dye.

In the past few decades, air and water pollution by organic dyes has become a serious concern due to their high toxicity. Removal of these organic dyes from polluted water bodies is a serious environmental concern and the development of new advanced photocatalytic materials for decomposing organic dyes can be a good solution. In this work, layered molybdenum disulfide/nickel disulfide (MoS/NiS) nanocomposites with various NiS content was synthesized by a one-step hydrothermal method using citric acid as a reducing agent.

Synergistic effect of grain boundaries and phonon engineering in Sb substituted BiSe nanostructures for thermoelectric applications.

Phonon scattering by intrinsic defects and nanostructures has been the primary strategy for minimizing the thermal conductivity in thermoelectric materials. In this work, we present the effect of Isovalent substitution as a method to decouple the Seebeck coefficient and the thermal conductivity of antimony (Sb) substituted bismuth selenide (BiSe). Transmission electron microscopy studies present the nanostructured BiSbSe thermoelectric system represents the coexistence of hierarchical defect structure and dislocations.

Hierarchically ordered macroporous TiO architecture via self-assembled strategy for environmental remediation.

Hierarchical orderd macroporous TiO architecture (HOMTA) was prepared with aid of ethylenediamine (EDA) and investigated the impact of amine molecules on the properties of TiO architecture. The different variation of amine molecules (EDA) leads to tunning the morphology under hydrothermal approach which is confirmed by FESEM and TEM analysis. The XRD and Raman studies confirms the crystal structure of anatase and brookite phase of TiO.

Fabrication of novel hybrid Z-Scheme WO@g-CN@MWCNT nanostructure for photocatalytic degradation of tetracycline and the evaluation of antimicrobial activity.

Exploring highly efficient visible-light-driven photocatalyst for the elimination organic pollutants is a great concern for constructing sustainable green energy systems. In the current work, a novel hybrid ternary WO@g-CN@MWCNT nanocomposites have been fabricated for visible-light-driven photocatalyst by self-assembly method. The as-prepared photocatalyst was examined by XRD, Raman, FESEM, HRTEM, XPS EDS, EIS, UV-visible DRS, and PL analysis.

Interfacial engineering in 3D/2D and 1D/2D bismuth ferrite (BiFeO)/Graphene oxide nanocomposites for the enhanced photocatalytic activities under sunlight.

3D-particulate and 1D-fiber structures of multiferroic bismuth ferrite (BiFeO/BFO) and their composites with 2D-graphene oxide (GO) have been developed to exploit the different scheme of interfacial engineering as 3D/2D and 1D/2D systems. Particulates and fibers of BFO were developed via sol-gel and electrospinning fabrication approaches respectively and their integration with GO was performed via the ultrasonic-assisted chemical reduction process. The crystalline and phase formation of BiFeO and GO was confirmed from the XRD patterns obtained.

Interface driven energy-filtering and phonon scattering of polyaniline incorporated ultrathin layered molybdenum disulphide nanosheets for promising thermoelectric performance.

The hybrid of organic conducting polymers and inorganic materials with ultralow thermal conductivity, which is a promising strategy for the realization of polymer based effective thermoelectric (TE) applications. In this work, ultrathin layered molybdenum disulphide (MoS) nanosheets/PANI nanocomposites are prepared by hydrothermal route. The effect of varying PANI wt% in the nanocomposites and its interface effect on thermoelectric properties are well investigated.

Vermiconversion of biowastes with low-to-high C/N ratio into value added vermicompost.

Seaweed (T1), sugarcane trash (T2), coir pith (T3) and vegetable waste (T4) with cowdung (1:1, w/w) were vermicomposted using Eudrilus eugeniae (50 days). The pH in vermicomposts showed a decrease while electrical conductivity showed increment. The organic matter content, organic carbon, lignin, cellulose, C/N and C/P ratios in vermicompost was significantly lower than compost.