Research output: Contribution to journal › Article › peer-review
Porous Natural Diamond with Embedded Metal (Pt0.50–Co0.50). / Filatov, Evgeny; Chepurov, Aleksei; Sonin, Valeri et al.
In: Chemistry (Switzerland), Vol. 5, No. 3, 09.2023, p. 1804-1814.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Porous Natural Diamond with Embedded Metal (Pt0.50–Co0.50)
AU - Filatov, Evgeny
AU - Chepurov, Aleksei
AU - Sonin, Valeri
AU - Zadesenets, Andrey
AU - Gromilov, Sergey
AU - Zhimulev, Egor
N1 - This research was funded by the Russian Science Foundation, grant number 23-27-00129 (Egor Zhimulev).
PY - 2023/9
Y1 - 2023/9
N2 - Natural diamond crystals with a highly porous surface were used as substrates for synthesizing single-phase bimetallic Pt–Co nanoparticles at temperatures of 500 °C and 800 °C. The metal nanoparticles inside the pores were determined to take the form of single-phase Pt0.50Co0.50 solid solutions with different degrees of superstructure ordering. A detailed characterization of both nanoalloys revealed a tetragonal symmetry with a space group, P4/mmm. For the sample obtained at 500 °C, the lattice parameters were a = 2.673(2), c = 3.735(3) Å, and c/a = 1.397(1); for the samples obtained at 800 °C, the parameters were—a = 2.688(2), c = 3.697(3) Å, and c/a = 1.375(1). Within the experimental parameters, no significant chemical interaction of the diamond with the Pt–Co particles was identified. The results demonstrate a strong anchoring effect of the metallic material within the etching pores. The successful synthesis of bimetallic Pt–Co particles embedded inside the caverns can facilitate a study of their magnetic properties. The presence of Pt–Co in specific diamond compositions can also be used for marking diamond crystals as a means for their subtle identification, as well as confirming the possibility of capturing significant amounts of metal along with diamonds during their dissolution in the deep Earth.
AB - Natural diamond crystals with a highly porous surface were used as substrates for synthesizing single-phase bimetallic Pt–Co nanoparticles at temperatures of 500 °C and 800 °C. The metal nanoparticles inside the pores were determined to take the form of single-phase Pt0.50Co0.50 solid solutions with different degrees of superstructure ordering. A detailed characterization of both nanoalloys revealed a tetragonal symmetry with a space group, P4/mmm. For the sample obtained at 500 °C, the lattice parameters were a = 2.673(2), c = 3.735(3) Å, and c/a = 1.397(1); for the samples obtained at 800 °C, the parameters were—a = 2.688(2), c = 3.697(3) Å, and c/a = 1.375(1). Within the experimental parameters, no significant chemical interaction of the diamond with the Pt–Co particles was identified. The results demonstrate a strong anchoring effect of the metallic material within the etching pores. The successful synthesis of bimetallic Pt–Co particles embedded inside the caverns can facilitate a study of their magnetic properties. The presence of Pt–Co in specific diamond compositions can also be used for marking diamond crystals as a means for their subtle identification, as well as confirming the possibility of capturing significant amounts of metal along with diamonds during their dissolution in the deep Earth.
KW - Pt–Co
KW - X-ray diffraction
KW - diamond
KW - nanoparticles
KW - subduction
KW - surface micromorphology
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85172153044&origin=inward&txGid=b4412c3f04ad256dfd23d4467c08b8aa
UR - https://www.mendeley.com/catalogue/95a025f5-961c-3b35-a941-882a17a7be80/
U2 - 10.3390/chemistry5030123
DO - 10.3390/chemistry5030123
M3 - Article
VL - 5
SP - 1804
EP - 1814
JO - Chemistry (Switzerland)
JF - Chemistry (Switzerland)
SN - 2624-8549
IS - 3
ER -
ID: 59555725