Photocatalytic Reduction of CO2 over Metal/BaTiO3 Catalysts

The paper presents the results of experimental studies of a photoactive catalyst in the form of barium titanate fibers with deposited particles of nickel, platinum and gold. Barium titanate fibers were synthesized by the molten salt method. The obtained barium titanate fibers were studied by SEM, TEM, XRD, and Raman spectroscopy. Photocatalytic studies showed that barium titanate fibers with platinum nanoparticles are the most active of the three prepared Metal/BaTiO3 samples.

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Effect of Small Amount BaTiO3 on Properties of K0.02Na0.98NbO3 Ceramics with Various Sintering Temperature Prepared by Molten Salt Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.718.129 ◽

2016 ◽

Vol 718 ◽

pp. 129-132

Author(s):

Chompoonuch Warangkanagool

Keyword(s):

Molecular Weight ◽

Dielectric Constant ◽

Dielectric Properties ◽

Barium Titanate ◽

Molten Salt ◽

Sintering Temperature ◽

Maximum Density ◽

Molten Salt Method ◽

Sodium Niobate ◽

Potassium Sodium Niobate

In the research, the properties of potassium sodium niobate – barium titanate [(1-x)K0.02Na0.98NbO3–(x)BaTiO3: (1-x)KNN–(x)BT] ceramics prepared by molten salt method with various molecular weight of BT or x are 0 and 0.05 were investigated. The calcined powders of pure K0.02Na0.98NbO3 and (0.95) K0.02Na0.98NbO3-(0.05) BaTiO3 were pressed and sintered at 1250 – 1325 °C and 1225 – 1300 °C for 2h, respectively. It was found that, the samples showed phase structure changing from monoclinic to orthorhombic with small amount BaTiO3 addition. The densification of K0.02Na0.98NbO3 ceramics and dielectric properties were improved with the addition of BaTiO3. The (0.95)K0.02Na0.98NbO3–(0.05)BaTiO3 ceramics sintered at 1250 °C showed maximum density and dielectric constant (∼8035), which was even comparable with that of K0.02Na0.98NbO3 ceramics sintered at 1225 – 1300 °C.

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Synthesis of Bi6Mo2O15 sub-microwires via a molten salt method and enhancing the photocatalytic reduction of CO2 into solar fuel through tuning the surface oxide vacancies by simple post-heating treatment

CrystEngComm ◽

10.1039/c3ce41274a ◽

2013 ◽

Vol 15 (46) ◽

pp. 9855 ◽

Cited By ~ 20

Author(s):

Ping Li ◽

Yong Zhou ◽

Wenguang Tu ◽

Rui Wang ◽

Chunfeng Zhang ◽

...

Keyword(s):

Molten Salt ◽

Surface Oxide ◽

Photocatalytic Reduction ◽

Molten Salt Method ◽

Solar Fuel ◽

Heating Treatment ◽

Reduction Of Co2

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Preparation of SrTiO3 Cubes by Molten Salt Method and Its Surface Ions Modification with Cu(II) Clusters

Journal of Inorganic Materials ◽

10.3724/sp.j.1077.2013.13048 ◽

2013 ◽

Vol 28 (10) ◽

pp. 1103-1107 ◽

Cited By ~ 2

Author(s):

Zhen LONG ◽

Xian-Hua WEI ◽

Xiao-Qing QIU

Keyword(s):

Molten Salt ◽

Molten Salt Method

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Kittel’s Brief Comments Endorsing an Alternative View on Barium Titanate

Condensed Matter ◽

10.3390/condmat6010010 ◽

2021 ◽

Vol 6 (1) ◽

pp. 10

Author(s):

Akira Kojima

Keyword(s):

State Physics ◽

Barium Titanate ◽

Cell Structure ◽

Experimental Studies ◽

Alternative View ◽

Solid State Physics ◽

Text Book ◽

Long Time ◽

Unit Cell Structure ◽

Displacive Type

Charles Kittel has written a masterpiece book, “Introduction to Solid State Physics” (ISSP). He mentions in the chapter on ferroelectrics in detail that barium titanate is the typical displacive-type ferroelectric compound where the Ti4+ displacement develops a dipole moment, which has made a deep impression in our mind. The author’s group, however, has arrived at an alternative viewpoint on the unit cell structure of barium titanate based on their exhaustive experimental studies. Accordingly, the author sent his relevant papers in 2006 and 2007 to Kittel. He endorsed the results frankly with reminiscence. He mentioned revising the ferroelectric chapter of ISSP according the author’s suggestions. It appears to be admissible to publish details now after Kittel has passed away. A long time misunderstanding of the phase transition in barium titanate is due to the text book knowledge of ISSP.

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