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Results and Discussions: X-Ray Diffraction Studies: The XRD pattern of thesynthesizedBiFeO3 particlesafter annealing at 600°C is shown in figure(1).The majority of peaks of the XRD pattern fits the JCPDS card no: 71-2494.
This is because at lower pH the number of co-ions surrounding the surface will be lesser compared to the neutral pH in which is tightly packed and prevents the dye molecule to get adsorbed to the surface.
This is because when the concentration of the photocatalysts increses the number of active sites increases and hence the number of OH- radicals taking part in the degradation of the dye also increases [45].
The Photocatalytic property was studied on a model pollutant DB-14 and the optimum conditions was found to be at pH2 because the number of co-ions surrounding the nanoparticle at that pH is low as confirmed by the zeta potential measurements and thereby leading to a good adsorption of dye on to the catalyst.

B: Mean number of the bacteria upon the control specimen (CFU/specimen).
C: Mean number of the bacteria upon the composites (CFU/specimen) [17]. 3.
Two new and wide diffraction peaks of Hydroxyapatite was somewhat noticed nearby situated at (2θ=18°) and (25°), which being allocated to be (110), (002) respectively according to the standard JCPDS cards (09-0432).
As the immersion duration increases, the (PEEK) substrate patterns decreased, as well as the number and the intensity of diffraction peaks of hydroxyapatite increased.
The results of the treated specimens revealed that the number of cells attached to the specimens of the composite is considerably more than that of the untreated specimens, which may be due to the augmented surface hydrophilicity and roughness of the composite.

The diffraction peaks were in harmony with JCPDS card no: 41-1445 and it belongs to the tetragonal rutile structure [10].
Number of unit cell in the crystal is calculated using the relation n= πD3/6V (4) where D is the crystallite size and V is the volume of the unit cell[18].
The number of unit cell in the crystallite increases as the crystallite size increases and is given in table 1.
Samples Lattice Parameters Cell Volume V=a2 c Crystallite size nm Number of unit cell in the crystal Band gap eV aÅ cÅ Pure SnO2 4.70594 3.16065 69.9954 3.871 433 3.99 0.2% Cu 4.68142 3.21577 70.4757 4.160 534 3.96 0.6% Cu 4.69746 3.21388 70.9178 4.587 712 3.94 1.0% Cu 4.83678 3.1663 74.0698 4.835 798 3.93 Figure 1.

The ZnO nanopowders synthesized by the chemical process have large numbers of reports.
It found that all the diffraction peaks can be indexed according to ZnO crystal, which is the hexagonal wurtzite structure, and match well with the standard hexagonal ZnO (JCPDS Card No.75-0576).
However, it is resulted that large number acid radical ions (NO3-and Cl-) are present in the solution.
The tested wave number is in the range of 4000~400 cm-1 and the resolution is 5 cm-1 with the high-purity KBr tablet.

The observed peaks have been analyzed and indexed using standard pattern for the mineral herzenbergite with orthorhombic structured SnS phase (JCPDS PDF Card # 39-0354).
The SEM images indicate that with increase in deposition temperature the number of crystallites increases leading to formation of more homogeneous film.
The optical spectroscopy is fast and simple pointer to crystal size, since band gap-size correlations have been made for a number of colloids and films [27].
The SEM images shows that deposited films are homogeneous and free form any pinholes or cracks with increase in number of crystallites with increase in deposition temperature.

The obtained films were irradiated by continuous red laser (700 nm) with power (>1000mW) for different laser irradiation time using the different number of times a laser scan (0, 6, 9, 12, 15, and 18 times) with a total irradiation time (0,30,45,60,75,90 min) respectively at room temperature.
Where in (SCSPT) system the spray nozzle and the irradiation laser move in the plane X-Y according to coordinates such as speed, distance and area of deposition are controlled by the researcher in addition to many other parameters figure (2): Figure 2: Illustrates the semi-computerized spray pyrolysis technique (SCSPT) Then the structure properties of MawsoniteCu6Fe2SnS8films earlier the laser irradiation, then the [CFTS] thin films were enlightened by the exploitation of red laser (700 nm) for various times at room temperature where it was as follows in table (2): Table 2: The samples with different time irradiation by red laser Sample code The number of times a laser scan Total laser irradiation time In minute X0 Without irradiation Without irradiation X1 6 30 X2 9 45 X3 12 60 X4 15 75 X5 18 90 Whereas, for each laser irradiation time takes five minutes along the adult
Cell parameters are a= 7.60300 Å c= 5.35800 Å, These values were matched JCPDS 42-1467 Data Card [19].
"Computer Search of JCPDS Data." 

Lower atomic number lanthanide (La-Gd) orthophosphate compounds are crystallized the monoclinic P21/n structure (Z=4).
Numerous published studies show linear behavior between vibrational spectra data of the lanthanide orthophosphates and the atomic numbers or the ionic radii of the lanthanide cations [10-13].
All samples show the desired monoclinic crystal structure of monazite-type LnPO4 phase (JCPDS card No. 83-0651), space group P21/n.
The linearity for the V1 bands with atomic number of the lanthanide element in the monazite structure has been originally observed by Begun et al. [16].

A number of novel methods have been proposed for HAP ceramic coating offering the potential for better control of film structure.
The sol gel method of fabricating thin films offer potential advantages over traditional technique as below [13]: (a) Low temperature processing (b) Easy coating of large surface (c) Small thickness (d) High optical quality (e) High purity Particularly, HAP coatings by the sol–gel method have received global attention in the biomedical field and the coatings deposited by dip coating method offers a number of benefits over other coating methods.
Thus it is inferred from the above analysis that thickness increases with the repeated number of coatings. 2.4 EDX analysis EDX spectrum of HAP coated on alumina thermally treated at 200˚C is presented in Fig. 5.
XRD spectrum for the HAP coated on alumina The XRD phase identification is performed by using JCPDS standard XRD card (72-1213), (86-1586) and (77-1542) for HAP.

On the basis of the remarkable physical properties and the versatile applications of the ZnO material, a number of 1D ZnO nanomaterials with different morphologies such as wires [5], rods [6], needles [7], columns [8], towers [9], belts [10], nails [11], helices [12], combs [13], and Tetrapod [14] have been successfully synthesized.
The FTIR spectrum has been recorded using a SHIMADZU FTIR – 8400S spectrometer in the wave number range of 400 - 4000 cm-1.
They are in agreement with the standard JCPDS 036–1451 card with the lattice parameter values of a = 0.3249 nm and c = 0.5206 nm.
Zinc oxide, with a high surface reactivity owing to a large number of native defect sites arising has emerged to be an efficient photocatalyst material compared to other metal oxides [25-27].

The structure of ZnO could be described as a number of alternating planes composed of tetrahedrally coordinated O2- and Zn2+ stacked along the c-axis.ZnO can be used for a number of applications such as NO2 gas sensor[11], UV laser[12], light emitting diode[13], solar cell [14] and nanogenerator[15]. d-MnO2 has a narrower bandgap energy (1.30eV)[16].
The XRD pattern of δ-MnO2 at molar ratio 6:1 could be indexed as δ-MnO2 (refers to JCPDS 80- 1098)as shown in Fig. 1(a).No diffraction peaks for other polymorphous of MnO2could be detected.The morphology of the δ-MnO2 nanoparticles obtained was examined by FESEM as depicted inFig. 1(b).
ZnO nanoparticles.XRD analysis of the as-received nanoparticles could be indexed to hexagonal ZnO (JSPDS Card No. 41-488) as shown in Fig. 2(a).