XPS Studies on Nanocomposite Si–C–N Coatings Deposited by Magnetron Sputtering

Mishra, Suman K; Bhattacharyya, A. S.; Rupa, P K P; Pathak, L C

doi:10.1166/nnl.2012.1320

Cited by 17 publications

(7 citation statements)

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“…In the N 1s spectrum, 398.86 and 400.04 eV show the photoelectron peaks of CN, and 401.27 eV shows the photoelectron peak of >CNH 43 . In the C 1s spectrum, the three photoelectron peaks appearing at 284.68, 288.27, and 291.84 eV correspond to CC, CN, and NCN, respectively 44 . The CSi peak and the SiO peak appear in the XPS spectra of Si 2p and O 1s.…”

Section: Resultsmentioning

confidence: 98%

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Self‐flocculation and its mechanism of natural rubber latex by accelerant‐modified silica

Xiao

Gong

et al. 2023

J of Applied Polymer Sci

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In this paper, an accelerant with vulcanization‐promoting and silanization‐promoting effects, 1,3‐diphenylguanidine (DPG), is loaded on green filler silica by high‐energy ball milling technology. Meanwhile, DPG breaks the ionization equilibrium of latex and realizes the self‐flocculation. The DPG‐induced self‐flocculation technology promotes the dispersion of silica and the silanization reaction, forming more complete filler‐rubber network and three‐dimensional crosslinking network. X‐ray diffraction, Fourier‐transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and thermogravimetric analysis results show that the ball milling technology makes DPG strongly adsorbed on the surface of silica, and the loading rate is 14.4%. Compared with dry mixing, the ball milling‐self‐flocculation technology increase the silanization index, tensile strength and aging coefficient by 8%, 31%, and 19%, respectively. The curing rate is improved, and the rolling resistance is the lowest. This research provides a green flocculation technology of the raw materials in formula without other flocculants and acidic wastewater discharge, avoiding the serious dust pollution and high energy consumption in the dry mixing process, as well as the poor aging resistance of rubber in the acid flocculation process of latex.

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Section: Resultsmentioning

confidence: 98%

“…43 In the C 1s spectrum, the three photoelectron peaks appearing at 284.68, 288.27, and 291.84 eV correspond to C C, C N, and N C N, respectively. 44 The C Si peak and the Si O peak appear in the XPS spectra of Si 2p and O 1s. The XPS results prove that the strong adsorption between DPG and silica after loading.…”

Section: The Characterization Of Dpg-silicamentioning

confidence: 99%

Self‐flocculation and its mechanism of natural rubber latex by accelerant‐modified silica

Xiao

Gong

et al. 2023

J of Applied Polymer Sci

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“…These differences may be mainly due to the interaction between the layers of LDH and interlayer CPT (e. g., hydrogen bonding action) [39,40] . Meanwhile, the N1s signal appeared in the ZnAl‐Eu‐CPT and the binding energies of N 1s at 398.92 and 400.50 eV are attributed to quinoline N and pyrrole N of CPT, respectively, [41‐43] and binding energy at 406.78 eV is due to NO 3 − [44,45] . The binding energy at 284.82 eV of C1s is related to the C−C, C−N, and C=N bonds [43] .…”

Section: Resultsmentioning

confidence: 99%

“…[39,40] Meanwhile, the N1s signal appeared in the ZnAl-Eu-CPT and the binding energies of N 1s at 398.92 and 400.50 eV are attributed to quinoline N and pyrrole N of CPT, respectively, [41][42][43] and binding energy at 406.78 eV is due to NO 3 À . [44,45] The binding energy at 284.82 eV of C1s is related to the CÀ C, CÀ N, and C=N bonds. [43] These results confirmed the incorporation of CPT in the Eu-doped ZnAl-LDH.…”

Section: Xps and Compositional Analysesmentioning

confidence: 99%

Eu‐doped ZnAl‐LDH as a Fluorescent Labeling Carrier for the Delivery and Controlled Release of Camptothecin

Qiu

et al. 2022

ChemistrySelect

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Europium doped Zinc‐aluminum layered double hydroxide (Eu‐doped ZnAl‐LDH) as a fluorescent labeling carrier for the delivery and controlled release of camptothecin (CPT) has been studied. X‐ray diffraction (XRD) patterns showed that the basal spacing of the Eu‐doped ZnAl‐LDH intercalated with CPT (2.27 nm) was larger than that of the initial Eu‐doped ZnAl‐LDH (0.88 nm), indicating the successful intercalation of CPT into the Eu‐doped ZnAl‐LDH carrier. X‐ray photoelectron spectroscopy (XPS) suggested that some Eu(III) were reduced to Eu(II) after the intercalation of CPT into the Eu‐doped ZnAl‐LDH. The release of the CPT from drug carrier was carried out in a simulated medium. It was found that the cumulative concentration of the released CPT was exponential with releasing time, and well conformed to the exponential equation: C=A‐Bexp(‐kt). It took 720 minutes (min) for the complete release of CPT from drug carrier. Fluorescent analyses revealed that the fluorescence attributed to the drug delivery system changed from red, blue‐green, to blue emission during delivery and release of CPT, which may be a favorable signal for “detecting” the delivery and release of CPT. Thus, the present Eu‐doped ZnAl‐LDH may be a feasible drug carrier with fluorescent labeling function.

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“…The peak located at 399.98 eV can be assigned to non-bonded nitrogen, while that at 401.05 eV is due to the coordination of nitrogen atoms of inhibitor molecules with Fe atoms (N-Fe) [89] , [90] , [91] . The third peak detected at 403.48 eV can be assigned to molecular N 2 of the hydrazone functional group [92] , [93] .…”

Section: Resultsmentioning

confidence: 99%

Unraveling the anti-corrosion mechanisms of a novel hydrazone derivative on steel in contaminated concrete pore solutions: An integrated study

Subbiah,

Lee,

Al-Hadeethi

et al. 2024

Journal of Advanced Research

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XPS Studies on Nanocomposite Si–C–N Coatings Deposited by Magnetron Sputtering

Cited by 17 publications

References 0 publications

Self‐flocculation and its mechanism of natural rubber latex by accelerant‐modified silica

Self‐flocculation and its mechanism of natural rubber latex by accelerant‐modified silica

Eu‐doped ZnAl‐LDH as a Fluorescent Labeling Carrier for the Delivery and Controlled Release of Camptothecin

Unraveling the anti-corrosion mechanisms of a novel hydrazone derivative on steel in contaminated concrete pore solutions: An integrated study

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