Hexagonal Phase Of CdS Research Articles

Wurtzite CdS ratio tunability on α-Fe2O3/CdS synergistic heterostructure for enhanced UV-induced photocatalytic decomposition of rhodamine 6G dye pollutant

Hematite α-Fe2O3 exhibits a slow catalytic reaction rate and low performance in aqueous pollutant decomposition. In this work, α-Fe2O3/CdS binary heterostructure composites were created by introducing different ratios of wurtzite CdS into α-Fe2O3 within 0–100 wt% via precipitation and impregnation methods. The photocatalytic performance of α-Fe2O3/CdS was enhanced for the decomposition of aqueous rhodamine 6G (R6G) dye under ultraviolet (UV) irradiation. SEM images reveal that higher CdS loading results in increased interfacial contact between rod-like CdS and spherical-shaped α-Fe2O3. XRD and FTIR results confirm the coexistence of rhombohedral α-Fe2O3 and hexagonal CdS phases, with peak strength proportional to the ratio of component loading, as the respective elements were verified through EDX analysis. The UV-Vis spectroscopic analysis exhibits an enhancement in optical absorption and band gap broadening as the CdS loading rises. α-Fe2O3/CdS with increased CdS loading exhibits faster and more efficient R6G degradation under UV exposure, as evidenced by greater rate constants and degradation efficiency, with optimal CdS loading of 90 wt% achieving a maximum efficiency of 79.14%. The present heterostructure could be employed in future wastewater remediation for effective removal of organic dye pollutants, further promoting clean water preservation for global environmental sustainability.

Visible-light-driven photocatalytic degradation of organic dyes over cubic-phase and hexagonal-phase CdS: a comparative study

Visible-light-driven photocatalytic degradation of organic dyes over cubic-phase and hexagonal-phase CdS: a comparative study

Sulfur vacancy and CdS phase transition synergistically boosting one-dimensional CdS/Cu2S/SiO2 hollow tube for photocatalytic hydrogen evolution

Constructing an efficient photoelectron transfer route to improve carrier separation efficiency is crucial for photocatalytic hydrogen evolution. In this work, CdS/Cu2S/SiO2 heterostructure with one-dimensional hollow tube morphology was designed by the solvothermal method using CuO/SiO2 hollow tube as carrier. The hexagonal phase CdS and sulfur vacancies were adjusted simultaneously by the reduction strategy of NaBH4 aqueous solution. CdS/CuS/SiO2 with cubic phase CdS was synthesized in the absence of NaBH4 aqueous solution. CdS/Cu2S/SiO2 was characterized by SEM, TEM, XRD, XPS, SPV and so on. The results showed that hexagonal CdS and sulfur vacancies benefited the separation of photo-generated carriers. As a consequence, the CdS/Cu2S/SiO2-10 composite exhibited a high photocatalytic hydrogen production rate (1196.98 μmol/g/h), and its performance almost 7.18 times than that of CdS/CuS/SiO2. Moreover, CdS/Cu2S/SiO2-10 showed an excellent cyclic stability. This was attributed to the strong electron interaction of CdS/Cu2S/SiO2 heterostructure and the sulfur vacancy acted as an electron trap, enhancing the separation of photo-induced electrons and holes.

Towards effective dye degradation and antimicrobial behavior of chitosan and C3N4-doped CdS nanoparticles

In this study, co-precipitation has been employed to develop carbon nitride (C 3 N 4 ) and chitosan (CS)-doped CdS nanoparticles (NPs) to investigate the doping effect of CS and C 3 N 4 on CdS to degrade MB dye and assess their antibacterial activity. Comparatively, the maximum dye degradation achieved by the previously reported binary blend of CdS-C 3 N 4 was 85%, whereas the maximum degradation achieved by the currently prepared ternary nano-catalyst was 99.75%. Furthermore, CdS NPs were doped with a fixed amount of CS at various concentrations (2 and 4 wt. %) of C 3 N 4 . Numerous techniques have been utilized to characterize doped NPs. The hexagonal phase of CdS was confirmed by XRD results, and doping caused a decrease in crystallite size, as calculated by the Debye Scherrer formula. Functional group existence was determined by FTIR; CdS was confirmed at 662 and 758 cm −1 , and doped CdS exhibited bond stretching and absorption at 1061, 1388, 1627, and 3434 cm -1 . The UV-Vis absorption spectra with blueshift after doping resulted in increased bandgap energy, which could be attributed to a reduction in crystallite size. PL spectra were utilized to observe the charge carrier transfer and trap sites of doped NPs. The presence of CdS formation and doping was observed using EDS. The morphology of the product was examined using HRTEM, which revealed spherical NPs agglomeration. C 3 N 4 -doped NPs demonstrated significant methylene blue (MB) dye degradation, while doped CdS samples exhibited considerable antimicrobial activity against Staphylococcus aureus and Escherichia coli bacteria.

Comparison of the impact of different chlorination treatments to ZnS and CdS thin films

In this study, the effect of ZnCl2 and CdCl2 treatments on the structural, optical and electrical properties of ZnS and CdS thin films grown by chemical bath deposition method was examined. Employing CdCl2 or ZnCl2 treatment to CdS caused a change from cubic to hexagonal structure. After treating ZnS with CdCl2, ZnS phase disappeared and a highly crystalline hexagonal CdS phase formed. CdCl2 treatment on CdS showed an improving effect on surface morphology, but ZnCl2 led to an unfavorable effect. CdCl2 treatment to ZnS was transformed it into a fused structure in which individual grains were disappeared. Treatment of ZnCl2 to ZnS and CdCl2 to CdS induced a slight increase in the amount of Zn and Cd, respectively. However, processing of CdCl2 to ZnS (or ZnCl2 to CdS) resulted in significant quantity of Cd (or Zn) elements in the samples. The transmittance of CdS decreased with CdCl2 and ZnCl2 treatments. However, the highest transmittance in ZnS thin films was achieved after ZnCl2 treatment. According to PL spectra, different emission types increased partially in CdS/CdCl2, but decreased in CdS/ZnCl2. After applying ZnCl2 treatment to ZnS, the emission type appears similar to the as deposited sample, while CdCl2 treatment caused the emission type to change. Electrical measurements showed that the resistivity and carrier concentrations of the samples were in the order of 103 Ω cm and 1013 cm−3, respectively. The carrier concentrations of the CdS/ZnCl2 and ZnS/CdCl2 sample increased slightly compared the as deposited samples.

Enhanced Photocatalytic Activity for Selective Oxidation of Toluene over Cubic–Hexagonal CdS Phase Junctions

Enhanced Photocatalytic Activity for Selective Oxidation of Toluene over Cubic–Hexagonal CdS Phase Junctions

Comparative study on the effect of precursors on the morphology and electronic properties of CdS nanoparticles.

Cadmium dithiocarbamate and cadmium ethyl xanthate complexes were synthesized and characterized by microanalysis, Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analyses. The complexes were employed as molecular precursors for the fabrication of CdS nanoparticles in hexadecylamine (HDA) and oleylamine (OLA) at a temperature of 250 °C. Spherical and oval shaped particles with sizes ranging from 9.93 ± 1.89 to 16.74 ± 2.78 nm were obtained in OLA while spherical, oval and rod shaped particles with sizes ranging from 9.40 ± 1.65 to 29.90 ± 5.32 nm were obtained in HDA. Optical properties of the nanoparticles showed blue shifts as compared to the bulk CdS, with the OLA capped nanoparticles slightly more blue shifted than the corresponding HDA capped nanoparticles. Results of crystallinity patterns revealed hexagonal phase of CdS.

Ultra-fast photoreduction of toxic Cr(VI) by CdS-rGO synthesized using single source precursor

Abstract Cadmium sulfide decorated with reduced graphene oxide (CdS-rGO) nanocomposites were synthesized by CdI2(LH)2 complex [where, LH = benzaldehyde thiosemicarbazone]. Various spectroscopic and analytical techniques were used for the characterization of the cadmium complex. The solvothermal decomposition method was employed to obtain CdS-rGO using CdI2(LH)2 complex as a single-source precursor (SSP) for CdS along with graphene oxide as the precursor for rGO and ethylene glycol as a solvent. The powder X-ray diffraction study of resultant CdS-rGO nanocomposites revealed a hexagonal phase for CdS. Scanning electron microscopy shows hierarchically structured cadmium sulfide-reduced graphene oxide nanocomposites. Transmission electron microscopy images reveal CdS nanoparticles associated with reduced graphene oxide sheets to form a nanocomposite. Raman spectroscopic studies show phonon mode at 310 cm−1 associated with the hexagonal phase of CdS. the band at 1349 cm−1and 1596 cm−1 correspond to phonon modes of rGO. The CdS-rGO nanocomposites demonstrated ultra-fast reduction of toxic Cr(VI) to less toxic Cr(III) under sunlight. A plausible mechanism for photoreduction of Cr(VI) to Cr(III) using CdS-rGO under natural sunlight irradiation is proposed. The role of valence and conduction band potential with a calculated redox potential of an acceptor species and facile transfer of electrons for fast photoreduction of Cr(VI) to Cr(III) is also discussed.

Morphology-Dependent Photocatalytic Degradation of Organic Pollutant and Antibacterial Activity with CdS Nanostructures.

Efficient removal of organic pollutants from waste water by nanostructured photocatalysts has become an emerging research due to its importance in environmental remediation. Herein, CdS nanostructures with different morphologies i.e., spherical, nanopetal and rose-like have been synthesized by wet chemical method using TEA as a structure directing agent. The morphology, crystal structure, composition, surface area and optical properties of the nanostructures are investigated by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX), Brunauer-Emment-Teller (BET) analyser, Ultraviolet-Visible (UV-Vis) absorption spectroscopy and Photoluminescence (PL) spectroscopy. XRD patterns indicate the existence of hexagonal phase of CdS in all the three morphologies. The SEM images confirm the morphological transformation of spherical CdS nanoparticles (NPs) to nanopetal and rose-like morphology with the increase in concentration of TEA in the synthesis process. UV-visible absorption spectra show that rose-like CdS nanostructure exhibits red-shift of absorption wavelength compared to spherical and nanopetal CdS nanostructures. The increase in intensity of PL peak of rose-like CdS at 576.6 nm compared to that of spherical and nanopetal CdS, confirms the presence of more S vacancies or defect states. The BET specific surface areas of spherical, nanopetal and rose-like CdS nanostructures are determined to be 4.18, 6.64 and 8.93 m₂/g, respectively. The EIS Nyquist plot confirms the higher electron transfer efficiency of rose-like CdS than that of spherical and nanopetal CdS. The photocatalytic activity of these three nanostructures are evaluated for the degradation of methylene blue (MB) dye in water solution under sunlight irradiation. Among the three structures, rose-like CdS nanostructure shows highest photocatalytic efficiency (96.5%) under sunlight irradiation within 120 min of sunlight irradiation. Antibacterial activity of the synthesized CdS nanostructures is performed against two Gram-positive and Gram-negative bacteria and rose-like CdS shows more activity against both types of bacteria than that of spherical and nanopetal CdS.

Comparison of Eosin yellowish dye–sensitized and CdS-sensitized TiO2 nanomaterial–based solid-state solar cells

In the present work, Eosin yellowish (EY) dye–sensitized and CdS-sensitized TiO2 photoanodes prepared by doctor blade technique, for dye (DSSC)- and semiconductor-sensitized solar cell (SSSC) by engaging different forms of solid-state electrolyte. To begin with, the TiO2 and CdS/TiO2 nanomaterials are synthesized by the solvothermal method and the changing of physical properties is examined from structural, optical, morphological, and chemical composition measurements. The formation of anatase tetragonal phase TiO2 and hexagonal phase CdS are investigated from XRD. UV-vis and photoluminescence studies expose that the nanomaterials loaded with different amounts of CdS on TiO2 extend the absorption wavelength region from ultraviolet to visible. The photovoltaic performances of pure and CdS-added TiO2 nanoparticle have studied by current-voltage measurement and impedance spectral response. We have achieved the highest solar conversion efficiency of 2.89% with the aid of the CdS-sensitized TiO2 photoanode. CdS-sensitized TiO2 photoanode shows good stability as inferred from transient photocurrent and photovoltage measurements. Overall investigation describes that the inclusion of CdS into the TiO2 photoanodes gradually increase efficiency and stability.

Investigation on structural and optical properties of CuO doped CdS-Zn3(PO4)2 nanocomposite for optoelectronic devices

Pure and CuO (0.3, 0.6 and 0.9 mol%) doped CdS-Zn3(PO4)2 semiconducting nanophosphors were synthesized by hydrothermal technique under mild reaction temperatures. The prepared samples were systematically investigated by Powder X-ray diffraction [XRD], Fourier Transform infra-red spectroscopy [FT-IR], Scanning electron microscopy [SEM] with EDAX, UV–Vis diffuse reflectance spectrometer [DRS] and Photoluminescence [PL] techniques. X-ray diffraction pattern shows hexagonal phase of CdS and monoclinic β-phase of Zn3(PO4)2 with good crystalline nature. The average crystallite size of nanocomposites are in the range 13 to 25 nm and found to decrease from 18 nm to 13 nm with increasing dopant concentration. FT-IR spectra indicate that the prepared samples are high in purity. The surface morphology of the samples has shown a hetero structure type morphology in which hexagonal CdS spheres network bonding accumulated on rectangular flakes. The obtained chemical composition of all the samples are identified by EDAX is in agreement with the calculated stoichiometry. The optical band gap values are determined by diffuse reflectance spectra and are found to be in the range 2.49 eV to 2.39 eV. The room temperature Photoluminescence spectra of pure CdS-Zn3(PO4)2 lattice shown a broad strong green emission peak at ~ 518 nm, while upon incorporation CuO ions in host lattice, a sharp luminescence peak around 393 nm has been observed in all the doped samples along with other peaks at 494 nm, 594 nm, 684 nm which are in the violet, blue-green-red fluorescence of UV-Visible region makes them suitable for optoelectronic device applications.

Novel Low Temperature Route to Produce CdS/ZnO Composite Nanofibers as Effective Photocatalysts

In this work, CdS/ZnO composite nanofibers (NFs) were prepared by the electrospinning of a sol–gel comprised of poly(caprolactone), zinc acetate dihydrate, cadmium acetate dihydrate, and ammonium sulfide. The electrospun NF mats were calcined under vacuum in an argon (Ar) atmosphere at 200 °C for 1 h. Standard physiochemical analysis techniques demonstrated the formation of the crystalline hexagonal phase of CdS and ZnO. Composite NFs showed good photocatalytic degradation of methylene blue (MB) dye under visible light irradiation compared to their counterparts. CdS nanoparticles, ZnO nanofibers, and composite NFs photodegraded 35.5%, 47.3%, and 90% of the MB dye, respectively, within 100 min. The reaction kinetics of MB photodegradation using the composite NFs followed the pseudo-first-order relation. Owing to their facile preparation and good photodegradation ability, the proposed method can be used to prepare various photocatalysts for wastewater treatment.

Solar Induced Photocatalytic Degradation of Methylene Blue by CdS/Ag2O Nanocomposites

AbstractPresent investigation reports the synthesis of stable as well as visible‐light active CdS/Ag2O nanocomposite photocatalysts in three varied ratios to be engaged in degradation of methylene blue (MB) dye. As‐synthesized photocatalysts have been characterized with the aid of diverse characterization techniques such as X‐ray diffraction (XRD), FT‐Raman, Fourier transform infrared spectroscopy (FT‐IR), X‐ray photoelectron spectroscopy (XPS), UV‐visible and Photoluminescence (PL) spectroscopy, and transmission electron microscopy (TEM). XRD pattern clearly depicts the presence of hexagonal CdS phase and cubic Ag2O phase. Results show a remarkable enhancement of photocatalytic activity for MB degradation especially for CdS/Ag2O nanocomposite with maximum efficiency up to 88.8 %. Moreover, the effective bandgap of CdS/Ag2O (1 : 2) nanocomposite has been significantly reduced to 1.71 eV from pure CdS (2.15 eV). It can be derived that CdS/Ag2O photocatalysis may be envisaged for treatment of diluted waste water containing organic pollutants.

Preparation of High-Performance CdS@C Catalyst Using Cd-Enriched Biochar Recycled From Plating Wastewater.

Biochar is widely used for the adsorptive removal of Cd from water and soil, but the Cd-enriched biochar produced carries a risk of secondary pollution. In this work, biochar derived from rice straw was used to adsorb Cd from plating wastewater. The Cd-enriched biochar showed a saturated adsorption capacity of about 63.5 mg/g and could be recycled and used in a mesoporous carbon-supported CdS (CdS@C) photocatalyst after pyrolysis carbonization and a hydrothermal reaction. The results demonstrated that the as-prepared CdS@C photocatalyst contained mixed cubic and hexagonal CdS phases, with a considerably lower band gap (2.1 eV) than pure CdS (2.6 eV). CdS@C exhibited an enhanced photocatalytic performance for the degradation of organic dyes under visible light irradiation compared with pure CdS due to its excellent light-harvesting capacity and efficient electron-hole separation. Moreover, the continuous formation of active species (h+, •OH, and O2•−) was responsible for the photodegradation of organic dyes using CdS@C. This work provides new insights for the safe disposal of Cd-enriched wastewater and for improving the economic viability of Cd-contaminated resources by recovering a value-added photocatalyst.

Influence of III–V substrates on the texture, structural, and optical properties of CdS thin films deposited by chemical bath deposition

We have studied the influence of texture distribution and crystalline structure of the CdS thin films on their optical properties. CdS samples were grown by chemical epitaxy on III–V substrates. Ga-V materials (c-GaAs and h-GaN) were selected due to the newly renovated interest in CdS/III–V heterostructures and their importance in the development of current optical devices, such as light emitter diodes and solar cells. Texture analysis was realized in pole diagrams obtained in a High-Resolution X-ray diffractometer. Measurements were carried out at 2θ = 26.6° and 2θ = 43.9° because these 2θ angles correspond to diffraction signal for cubic and hexagonal CdS phases, respectively. Pole diagrams show fourfold symmetry in the CdS layers deposited on GaAs (100) substrates and sixfold symmetry in CdS layers deposited on GaN (0002) substrates, which indicates that epitaxial CdS films with both crystal structures is possible by a low-cost technique (Chemical Bath Deposition). The structural study was completed with a surface analysis of the CdS samples by atomic force microscopy; the images obtained showed a greater surface roughness in the CdS layers grown on GaN substrates, this result agrees with the texture distribution observed in pole diagrams. Optical properties of radiative and non-radiative recombination were studied by Raman and photoluminescence (PL) spectroscopies. According to PL results, cubic CdS films have better efficiency in the recombination of radiative bands. In addition, we determined that the CdS–A1LO phonon for the cubic monocrystalline phase is located at 302.35 cm−1, which is 0.84 cm−1 smaller than hexagonal structure.

Facile spray pyrolysis fabrication of Al:CdS thin films and their key linear and third order nonlinear optical analysis for optoelectronic applications

Different quantity of aluminium (Al) doped CdS thin films are fabricated through a facile and cost-effective spray pyrolysis route. Elemental composition and mapping studies approved the presence of Al and its homogeneous distribution throughout the films. The surface morphology of films is found to be modified by Al doping content. X-ray diffraction studies show that the grown films are of hexagonal crystal system. The crystallite size was estimated in range from 16 to 22 nm. Lattice parameters were determined using POWDERX software and confirm single phase of CdS. Vibrational study possesses fundamental phonon modes in all fabricated films related to single hexagonal phase of CdS. Optical study confirms that the films are low absorbing and high transparency. The estimated values of refractive indices are noticed in the range of 1–2.8. Real and imaginary parts of permittivity and loss tangent values were calculated. Furthermore, the linear susceptibility, nonlinear cubic susceptibility, and refractive index were obtained using z-scan technique and observed to be enhanced from 1.17 × 10−6 to 4.66 × 10−6 cmW−1, 3.68 × 10−5 to 6.93 × 10−5 esu. and 2.89 × 10−8 to 5.11 × 10−8 cm2W−1, respectively.

Broad spectrum response flower spherical-like composites CQDs@CdIn2S4/CdS modified by CQDs with up-conversion property for photocatalytic degradation and water splitting

A composite material of CQDs@CdIn2S4/CdS modified by carbon quantum dots (CQDs) with up-conversion property was prepared by the microwave assisted method. CQDs@CdIn2S4/CdS composites consisting of hexagonal phase CdS and cubic phase CdIn2S4 show a uniform flower spherical-like morphology and a significant increase in specific surface area. Moreover, the prepared CQDs with up-converted photoluminescence property can convert long wavelength light (λ > 600 nm) into short wavelength light (λ < 600 nm), which can match the light absorption range of the composite CdIn2S4/CdS reasonably, broaden its light response range and improve its utilization of sunlight. At the same time, the photocatalytic activity of CQDs@CdIn2S4/CdS series composites under different light sources was studied with methyl orange as the model molecule, and 1% CQDs@CdIn2S4/CdS was determined as one of the best photocatalytic material. The composite material 1% CQDs@CdIn2S4/CdS not only had high photohydrogen production capacity (3177.8 μmol/g, 8 h), but also had a very stable effect on the ultraviolet photocatalytic degradation rate and the final hydrogen evolution yield of photolyzed water after four cycles.

Improved optical and structural properties of cadmium sulfide nanostructures for optoelectronic applications

In this study, the effect of ZnO seed layer on the growth of uniform CdS nanostructures was investigated using chemical bath deposition technique. Besides, the influence of molar concentration of reagents on the surface morphology, structural and optoelectrical properties of the deposited CdS thin films were examined. The CdS nanostructures were grown on bare glass and ZnO/glass substrates with different reagent molar concentrations. The results indicated an improvement in the homogeneity and uniformity of the grown CdS nanostructures on ZnO seed layer which can be due to the low lattice mismatch between ZnO and CdS structures. The CdS/ZnO samples were optimized by changing the molar concentration of reagents. A three–dimensional intersecting vertical nanosheet morphology with hexagonal structure was obtained when modified chemical concentration of 0.5 M was applied. The XRD pattern of CdS nanosheets indicated the hexagonal phase of CdS which were strongly orientated along (002) plane. The elevated intensity of dominant peak related to this sample confirmed the improved crystal quality of this CdS nanostructure comparing to the other samples. The UV–Vis spectrum demonstrated a high absorption coefficient for CdS intersecting nanosheets which might be due to the high specific surface area and light trapping behavior of this sample. The photoluminescence study also showed an improvement in optical properties of optimized CdS nanostructures. In order to study the optoelectrical properties of CdS nanostructures, metal–semiconductor–metal photodetectors were fabricated with different CdS samples and their current–voltage characteristics were analyzed. The results indicated an enhancement in photosensitivity, responsivity, and speed of photodetectors based on optimized CdS nanostructures.

Atmospheric pressure non-thermal plasma-liquid interactions for a template-free synthesis of Al-doped CdS nanorods

In this study, Al-doped CdS nanorods were grown via a novel non-thermal plasma-liquid interaction (PLI) at atmospheric pressure. Cd (SO4), Al (NO3)3 and Na2S2O3 were used as precursors and thioglycolic acid as capping agent. Crystalline structure, morphology and optical properties of nanomaterials have been characterized by means of X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDS), photoluminescence (PL) and UV–vis analyses. XRD patterns showed that as Al incorporates into CdS, the hexagonal phase of CdS developed in new crystalline planes. The FESEM imaging confirmed that one-directional Al-doped CdS nanorods (NRs) were fabricated via PLI method. It was also depicted that NRs size increases simultaneously when plasma treatment time increases till it reaches a diameter and length of 80 and 500 nm, respectively, after 50 min of plasma treatment. EDS analysis demonstrated that Al was introduced in CdS structure successfully via this plasma method. The optimal PL intensity of QD NRs was reached after 40 min synthesis time and Al concentration of 1%. Also as treatment time increases, PL and absorption spectra are red-shifted. The nanostructures indicated a good activity for methyl orange photo-degradation as pollution, in which the activity largely increased after Al-doping. Impedance spectroscopy indicated an enhancement of the electron transport via Al insertion in CdS nanorods.

Effect of TiO2 doping on structural and optical properties of CdSZn3(PO4)2 nanocomposites

Pure and (0.3, 0.6 and 0.9 mol%) TiO2-doped CdSZn3(PO4)2semiconducting nanocomposites were successfully synthesized by hydrothermal route. The structural compositions, surface morphology, diffuse reflectance spectroscopy and luminescence properties of all the nanocomposites were systematically investigated. X-ray diffraction pattern exhibits the co-existence of both hexagonal phase of CdS and a mixer of γ and β monoclinic Zn3(PO4)2 phases with high crystalline order. Upon increasing of TiO2 content from 0.3 to 0.9 mol%, γ-Zn3(PO4)2 phase is decreasing while β-Zn3(PO4)2 phase is found to increase. Further, it has been found that the TiO2 additive atoms did not segregate to form secondary phases but led to variation in grain size, local disorder and local strain in the nanocomposites. The average crystallite size of nanocomposites is in the range 22–25 nm. The surface morphology of the samples was clearly shown as flakes surrounded by hexagonal CdS spheres like heterostructure type morphology. EDAX results confirm the stoichiometry of all the samples with slight variation of CdS content with increasing TiO2 dopant content. Optical band gap values are found to decrease from 2.52 to 2.44 eV with increasing TiO2 content. Further, photoluminescence studies revealed that all the samples exhibited strong fluorescence in the visible wavelength region and the chromaticity characteristics from CIE diagram were also explored in search of their applicability for commercial LED applications.