Synthesis, Characterization,and Photocatalytic activity of Silver nanoparticledoped Phosphomolybdic acid supportedZirconia

Sampurnam, S.; Dhanasekaran, T.; Muthamizh, S.; Panneerselvam, A.; Munusamy, S.; Latha, D.; Narayanan, Vijaykrishnan

doi:10.1016/j.matpr.2019.04.178

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…, sintered temperature at 750 °C shows corresponding AZO XRD peaks of ZrO 230.49 (111), 35.04 (200), 37.97 (012), 44.37 (112), 50.52 (220) (Sampurnam et al 2019) and less intense silver peak appeared at angle of 38.82 (111), matching with (JCPDS NO. 65-1022 and 04-0783) and 425 °C ZrO 2, Ag-ZrO 2 of angle assigned peak for monoclinic phase indicate 28.07 (110), 31.40 (111), 35.70 (− 102), 38.92 (120), 40.93 (− 211), 45.12 (202), 50.48 (220), 55.74 (031), 62.91 (− 312), 65.77 (320), 71.25 (− 322), 75.20 (041) (Pei et al 2013) while a very small amount of tetragonal phase appeared at angle of 29.56 (101), 34.27 (022), 49.29 (112), 60.03 (211) matching with monoclinic ZrO 2 (JCPDS No.…”

supporting

confidence: 63%

Hydrothermal implement with supporting of semiconductor ZrO2 (ZO), Ag doped ZrO2 (AZO) nanomaterial and its astrophysical, UV photocatalytic employment on Rh6G dye

et al. 2020

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Greatly secure semiconducting materials of Ag doped ZrO 2 (AZO) nanoparticles have been prepared by the use of hydrothermal and precipitation methods. Photocatalytic nanoparticles were characterized by UV-DRS, XRD, FT-IR and HR-SEM, HR-TEM, PL and CV techniques. Admirable improvement in the direct band gap of 4.61-4.58 eV was achieved as a result of doping. XRD diffraction pattern established the arrangement of monoclinic and tetragonal phase. The crystallite size and specific surface area were resoluted as 37.51 nm and 50.44 g/cm 3 . In addition, microscopic observation shows the Ag doped ZrO 2 has achieved agglomeration and the particle diameter range between less than 100 nm of 5.81 and 7.65 1/nm. Luminescence and cyclic voltammetry are given additional supports towards optoelectronic characterization of Ag doped zirconium dioxide nanomaterials. The obtained ZO/AZO nanoparticles persist towards cationic dye of Rh6G at outfitted parameters of pH medium 9 implemented effectively in UV and solar light. The photodegradation of Rh6G dye is well described by pseudo-first order kinetics and high quantum yield. The Langmuir-Hinshel wood mechanism of photocatalytic effect of Ag doped Zirconium oxide nanomaterial have been discussed sucessfully and COD analysis was investigated. In this study, AZO material has to be proficient and potential remediated for contaminated water.

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confidence: 63%

Hydrothermal implement with supporting of semiconductor ZrO2 (ZO), Ag doped ZrO2 (AZO) nanomaterial and its astrophysical, UV photocatalytic employment on Rh6G dye

et al. 2020

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“…Furthermore, in contrast to ZnAl-LDH, the FTIR spectrum of FePcS-PMA-LDH appeared as characteristic peaks of PMA. The absorption peak at 871 cm −1 corresponded to the stretching vibrations of Mo-Oc-Mo and Mo-Ob-Mo bands, and the stretching vibrations at 966 cm −1 and 1064 cm −1 referred to Mo=Od and P-Oa bands [35][36][37].The results of the FTIR spectra further confirmed the successful modification of FePcS and FePcS-PMA in ZnAl-LDH. Figure 3 presents the evolution of the zeta potential as a function of pH for the ZnAl-LDH, FePcS-LDH, and FePcS-PMA-LDH with the particle concentration of 2 g/L.…”

Section: 1064mentioning

confidence: 52%

Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

Huang

Tian

et al. 2020

Materials

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1) Background: Iron tetrasulfophthalocyanine with a large nonlinear optical coefficient, good stability, and high catalytic activity has aroused the attention of researchers in the field of photo-Fenton reaction. Further improvement of the visible light photo-Fenton catalytic activity under circumneutral pH conditions for their practical application is still of great importance. (2) Methods: In this paper, iron tetrasulfophthalocyanine (FePcS) and phosphomolybdic acid (PMA) cointercalated layered double hydroxides (LDH) were synthesized by the ion-exchange method. All samples were fully characterized by various techniques and the results showed that FePcS and PMA were successfully intercalated in layered double hydroxides and the resulted compound exhibited strong absorption in the visible light region. The cointercalation compound was tested as a heterogeneous catalyst for the visible light photo-Fenton degradation of bisphenol A (BPA) at circumneutral pH.(3) Results: The results showed that the degradation and total organic carbon removal efficiencies of bisphenol A were 100% and 69.2%, respectively. (4) Conclusions: The cyclic voltammetry and electrochemical impedance spectroscopy measurements demonstrated that the main contribution of PMA to the enhanced photo-Fenton activity of FePcS-PMA-LDH comes from the acceleration of electron transfer in the reaction system. Additionally, the possible reaction mechanism in the photo-Fenton system catalyzed by FePcS-PMA-LDH was also proposed.

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“…The characteristic peak of SCN is slightly shifted towards a lower angle compared to the two characteristic peaks of pure g-C3N4, which may be related to the substitution of sulfur in the lattice atoms of carbon nitride [31]. In the XRD pattern of SCN20, it was observed that the intensity of the characteristic diffraction peak of melon analogues at 13.2° was weakened, mainly because PTA would react with the amino group of melon analogues in SCN, which in turn led to a decrease in the content of melon analogues [32]. Meanwhile, the characteristic diffraction peaks of PTA with a Keggin-type structure were observed at 10.4°, 21.4°, and 26.4°, which indicated that PTA still kept the Keggin-type structure after compounding with SCN and was uniformly solidly loaded onto SCN.…”

Section: Xrd Analysismentioning

confidence: 98%

“…2 shows the FT-IR spectra of SCN, PTA, SCN5, SCN10, SCN20, and SCN100. In the FT-IR spectra of pure PTA, the characteristic absorption peaks of PTA at 1083 cm -1 , 990 cm -1 , 893 cm -1 , and 805 cm -1 are attributed to the vibrational absorption of P-O, W-O, W-Ob-W, and W-Oc-W, respectively [32]. In the FT-IR spectrogram of SCN, the absorption peaks at 809 cm -1 and 889 cm -1 correspond to the C-N stretching vibrational characteristic absorption in the triazine ring, and the absorption peaks at 1240 -1650 cm -1 correspond to the stretching vibrational characteristic absorption of the carbon-nitrogen aromatic heterocyclic ring, and the broad band at 3100 -3400 cm -1 corresponds to the stretching vibrational absorption of the N-H bond.…”

Section: Ir Analysismentioning

confidence: 99%

Synthesis of Phosphotungstic acid/S-doped g-C3N4 Photocatalyst and Its Photocatalytic Degradation of Organic Pollutants in Aqueous Solutions

Li¹,

LIU²,

YANG³

et al. 2022

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The S-doped g-C3N4 (SCN) was prepared by thermal condensation method using thiourea as a precursor, and then the phosphotungstic acid (PTA)/SCN composite photocatalytic material was prepared by reflux adsorption method. The photocatalytic degradation experiments of Rhodamine B showed that SCN20 had the highest photocatalytic degradation rate (74 %), which was 1.9 times and 3.5 times higher than that of PTA (39 %) and SCN (21 %), respectively. The photocatalytic degradation rate of SCN20 was increased by 5 times compared to that of SCN, indicating that the photocatalytic degradation performance of the composite material was significantly improved. The photocatalytic degradation mechanism study revealed that O2- was the main active species in the photocatalytic degradation of Rhodamine B, and the addition of PTA helped the effective separation of electrons-hole and improved the photocatalytic degradation rate. Our PTA/SCN is proposed as an environmental safety tool due to several advantages, such as low cost, convenient preparation, and efficient photocatalytic degradation of Rhodamine B.

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Synthesis, Characterization,and Photocatalytic activity of Silver nanoparticledoped Phosphomolybdic acid supportedZirconia

Cited by 8 publications

References 19 publications

Hydrothermal implement with supporting of semiconductor ZrO2 (ZO), Ag doped ZrO2 (AZO) nanomaterial and its astrophysical, UV photocatalytic employment on Rh6G dye

Hydrothermal implement with supporting of semiconductor ZrO2 (ZO), Ag doped ZrO2 (AZO) nanomaterial and its astrophysical, UV photocatalytic employment on Rh6G dye

Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

Synthesis of Phosphotungstic acid/S-doped g-C3N4 Photocatalyst and Its Photocatalytic Degradation of Organic Pollutants in Aqueous Solutions

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