Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix
The thermal reduction of the copper(II) complexes [Cu<sup>II</sup>(N<sub>2</sub>H<sub>4</sub>)<sub>3</sub>][B<sub>10</sub>H<sub>10</sub>]·<i>n</i>H<sub>2</sub>O (<b>I</b>·<i>n</i>H...
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MDPI AG
2023-08-01
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| Series: | Inorganics |
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| author | Elena A. Malinina Ivan I. Myshletsov Grigorii A. Buzanov Irina V. Kozerozhets Nikolay P. Simonenko Tatiana L. Simonenko Svetlana E. Nikiforova Varvara V. Avdeeva Konstantin Yu. Zhizhin Nikolay T. Kuznetsov |
| author_facet | Elena A. Malinina Ivan I. Myshletsov Grigorii A. Buzanov Irina V. Kozerozhets Nikolay P. Simonenko Tatiana L. Simonenko Svetlana E. Nikiforova Varvara V. Avdeeva Konstantin Yu. Zhizhin Nikolay T. Kuznetsov |
| author_sort | Elena A. Malinina |
| collection | DOAJ |
| description | The thermal reduction of the copper(II) complexes [Cu<sup>II</sup>(N<sub>2</sub>H<sub>4</sub>)<sub>3</sub>][B<sub>10</sub>H<sub>10</sub>]·<i>n</i>H<sub>2</sub>O (<b>I</b>·<i>n</i>H<sub>2</sub>O) and [Cu<sup>II</sup>(NH<sub>3</sub>)<sub>4</sub>][B<sub>10</sub>H<sub>10</sub>]·<i>n</i>H<sub>2</sub>O (<b>II</b>·<i>n</i>H<sub>2</sub>O) has been studied in an argon atmosphere at 900 °C. It has been found that the annealing of both compounds results in a Cu@BN boron-containing copper composite. It has been shown that this process leads to the formation of a boron nitride matrix doped with cubic copper(0) nanoparticles due to the copper(II)→copper(I)→copper(0) thermal reduction. The phase composition of annealing products <b>I<sup>900</sup></b> and <b>II<sup>900</sup></b> has been determined based on powder X-ray diffraction, IR spectroscopy and thermal analysis data. The morphology, average particle size and composition of the composite have been determined by TEM and high-resolution TEM + EDS. The average particle size has been found to be about 81 nm and 52 nm for samples <b>I<sup>900</sup></b> and <b>II<sup>900</sup></b>, respectively. Comparison of the results obtained using physicochemical studies has shown the identity of the composition of the products of annealing <b>I<sup>900</sup></b> and <b>II<sup>900</sup></b>. The electrical properties of a coating based on an <b>I<sup>900</sup></b> sample modified with Cu<sup>0</sup>→Cu<sub>2</sub>O in situ during deposition on a chip at 300 °C in air have been studied. As a result, with increasing temperature, an increase in the electrical conductivity characteristic of semiconductors has been observed. |
| first_indexed | 2024-03-10T23:51:57Z |
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| language | English |
| last_indexed | 2024-03-10T23:51:57Z |
| publishDate | 2023-08-01 |
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| spelling | doaj.art-eedc13d3cf694336b547b9842408a97c2023-11-19T01:35:58ZengMDPI AGInorganics2304-67402023-08-0111834510.3390/inorganics11080345Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride MatrixElena A. Malinina0Ivan I. Myshletsov1Grigorii A. Buzanov2Irina V. Kozerozhets3Nikolay P. Simonenko4Tatiana L. Simonenko5Svetlana E. Nikiforova6Varvara V. Avdeeva7Konstantin Yu. Zhizhin8Nikolay T. Kuznetsov9Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, RussiaThe thermal reduction of the copper(II) complexes [Cu<sup>II</sup>(N<sub>2</sub>H<sub>4</sub>)<sub>3</sub>][B<sub>10</sub>H<sub>10</sub>]·<i>n</i>H<sub>2</sub>O (<b>I</b>·<i>n</i>H<sub>2</sub>O) and [Cu<sup>II</sup>(NH<sub>3</sub>)<sub>4</sub>][B<sub>10</sub>H<sub>10</sub>]·<i>n</i>H<sub>2</sub>O (<b>II</b>·<i>n</i>H<sub>2</sub>O) has been studied in an argon atmosphere at 900 °C. It has been found that the annealing of both compounds results in a Cu@BN boron-containing copper composite. It has been shown that this process leads to the formation of a boron nitride matrix doped with cubic copper(0) nanoparticles due to the copper(II)→copper(I)→copper(0) thermal reduction. The phase composition of annealing products <b>I<sup>900</sup></b> and <b>II<sup>900</sup></b> has been determined based on powder X-ray diffraction, IR spectroscopy and thermal analysis data. The morphology, average particle size and composition of the composite have been determined by TEM and high-resolution TEM + EDS. The average particle size has been found to be about 81 nm and 52 nm for samples <b>I<sup>900</sup></b> and <b>II<sup>900</sup></b>, respectively. Comparison of the results obtained using physicochemical studies has shown the identity of the composition of the products of annealing <b>I<sup>900</sup></b> and <b>II<sup>900</sup></b>. The electrical properties of a coating based on an <b>I<sup>900</sup></b> sample modified with Cu<sup>0</sup>→Cu<sub>2</sub>O in situ during deposition on a chip at 300 °C in air have been studied. As a result, with increasing temperature, an increase in the electrical conductivity characteristic of semiconductors has been observed.https://www.mdpi.com/2304-6740/11/8/345coppernanoparticlesthermal reductionconductivitydecahydro-<i>closo</i>-decaborate anion |
| spellingShingle | Elena A. Malinina Ivan I. Myshletsov Grigorii A. Buzanov Irina V. Kozerozhets Nikolay P. Simonenko Tatiana L. Simonenko Svetlana E. Nikiforova Varvara V. Avdeeva Konstantin Yu. Zhizhin Nikolay T. Kuznetsov Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix Inorganics copper nanoparticles thermal reduction conductivity decahydro-<i>closo</i>-decaborate anion |
| title | Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix |
| title_full | Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix |
| title_fullStr | Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix |
| title_full_unstemmed | Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix |
| title_short | Physicochemical Fundamentals of the Synthesis of a Cu@BN Composite Consisting of Nanosized Copper Enclosed in a Boron Nitride Matrix |
| title_sort | physicochemical fundamentals of the synthesis of a cu bn composite consisting of nanosized copper enclosed in a boron nitride matrix |
| topic | copper nanoparticles thermal reduction conductivity decahydro-<i>closo</i>-decaborate anion |
| url | https://www.mdpi.com/2304-6740/11/8/345 |
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