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Research article
Fubin Jiang
Beijing normal university
Corresponding Author
ORCiD: https://orcid.org/0000-0003-2120-2827
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This work is licensed under a CC BY 4.0 License. Read Full License
LaNiO 3 -Perovskite-type oxides, as a novel hydrolytic catalyst, were synthesized using a sol-gel-calcination method, and were characterized by employing x-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Brunauer–Emmett–Teller (BET). It was revealed that LaNiO 3 and 2% g-C 3 N 4 /LaNiO 3 -Perovskite-type oxides are nanoparticles about 12 nm and 10nm easily agglomerated in large amounts, and the specific surface area of LaNiO 3 is 21.277 m 2 /g and 2% g-C 3 N 4 /LaNiO 3 is 26.645 m 2 /g, respectively. The results also indicate that there are irregular microporoes in the material. In the catalytic activity test, the absorption spectra were collected when hydrolysis of p-nitrophenyl picolinate (PNPP) (C PNPP =1-5×10 -5 mol/L) was catalyzed by LaNiO 3 (0.5g/L) and 2% g-C 3 N 4 /LaNiO 3 (0.5g/L) in buffer solution at different pH values (6.5-7.8), respectively. Based on the absorption spectrum data, the pseudo first-order rate constant is estimated to be 0.59min -1 and 1.14min -1 , respectively. In addition, the proposed kinetics model of this reaction was confirmed by the results of the spectrum and the calculations.
Keywords
Perovskite-type oxides, Catalytic hydrolysis reaction, p-nitrophenyl picolinate, kinetics model
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CURRENT STATUS: Under Revision
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Posted 06 Aug, 2020
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Editorial decision: Major revision
On 13 Aug, 2020
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This preprint is under consideration at BMC Chemistry. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Fubin Jiang
Beijing normal university
Corresponding Author
ORCiD: https://orcid.org/0000-0003-2120-2827
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Revision
Version 1
Posted 06 Aug, 2020
No community comments so far
Editorial decision: Major revision
On 13 Aug, 2020
Editor invited
On 04 Aug, 2020
Editor assigned
On 03 Aug, 2020
Submission checks complete
On 02 Aug, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Medicinal Chemistry
License:
This work is licensed under a CC BY 4.0 License. Read Full License
LaNiO 3 -Perovskite-type oxides, as a novel hydrolytic catalyst, were synthesized using a sol-gel-calcination method, and were characterized by employing x-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Brunauer–Emmett–Teller (BET). It was revealed that LaNiO 3 and 2% g-C 3 N 4 /LaNiO 3 -Perovskite-type oxides are nanoparticles about 12 nm and 10nm easily agglomerated in large amounts, and the specific surface area of LaNiO 3 is 21.277 m 2 /g and 2% g-C 3 N 4 /LaNiO 3 is 26.645 m 2 /g, respectively. The results also indicate that there are irregular microporoes in the material. In the catalytic activity test, the absorption spectra were collected when hydrolysis of p-nitrophenyl picolinate (PNPP) (C PNPP =1-5×10 -5 mol/L) was catalyzed by LaNiO 3 (0.5g/L) and 2% g-C 3 N 4 /LaNiO 3 (0.5g/L) in buffer solution at different pH values (6.5-7.8), respectively. Based on the absorption spectrum data, the pseudo first-order rate constant is estimated to be 0.59min -1 and 1.14min -1 , respectively. In addition, the proposed kinetics model of this reaction was confirmed by the results of the spectrum and the calculations.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
This is a list of supplementary files associated with this preprint. Click to download.
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