Formation of silicate structures in Cu-containing silica xerogels
Source abstract
Abstract
Using infrared absorption and Raman spectroscopy, the structure of SiO2 sol-gel samples containing copper were analyzed as a function of air heat treatments. The weight composition of the samples was 70(SiO2)–30(CuO) and the thermal treatments were carried out in air at various temperatures in the range of 100–600 °C. It was found that the Cu might be incorporated into the SiO2 matrix at least in two ways: forming oxide particles and forming metasilicatelike structures. The copper metasilicate found had the chemical formula, Cu6 [Si6O18] · 6H2O, which is known as dioptase with a thermal stability at temperatures up to 600 °C.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Aerogels and thermal insulation · Mesoporous Materials and Catalysis · Building materials and conservation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. 10.1126/science.208.4450.137110.1126/science.208.4450.1371 ↗
2. 10.1063/1.44247210.1063/1.442472 ↗
3. McMillan · Bull. Mineral · 1983 · 106 · 57
4. Nakamoto · 1997
5. 10.1016/S0022-3093(96)00639-410.1016/S0022-3093(96)00639-4 ↗
6. 10.1103/PhysRevB.48.1567210.1103/PhysRevB.48.15672 ↗
7. 10.1016/0022-3093(84)90392-210.1016/0022-3093(84)90392-2 ↗
8. Zuñiga · J. Vac. Sci. Technol. A · 1994 · 12 · 1445
9. 10.1116/1.58394410.1116/1.583944 ↗
10. Seifert · Am. Mineral. · 1982 · 67 · 696
11. 10.1103/PhysRevB.38.125510.1103/PhysRevB.38.1255 ↗
12. 10.1063/1.35227110.1063/1.352271 ↗
13. 10.1063/1.34447210.1063/1.344472 ↗
14. Duran · J. Non-Cryst. Solids · 1984 · 63 · 4510.1016/0022-3093(84)90385-5 ↗
15. 10.1103/PhysRevB.19.429210.1103/PhysRevB.19.4292 ↗
16. 10.1103/PhysRevB.15.403010.1103/PhysRevB.15.4030 ↗
17. 10.1002/(SICI)1521-396X(199903)172:1<49::AID-PSSA49>3.0.CO;2-I10.1002/(SICI)1521-396X(199903)172:1<49::AID-PSSA49>3.0.CO;2-I ↗
18. 10.1103/PhysRevB.47.305310.1103/PhysRevB.47.3053 ↗
19. Wells · 1978
20. 10.1006/jssc.1996.015610.1006/jssc.1996.0156 ↗
21. 10.1016/S0022-3697(99)00035-910.1016/S0022-3697(99)00035-9 ↗
22. 10.1016/S0167-2991(08)60037-310.1016/S0167-2991(08)60037-3 ↗
23. 10.1021/jp980887+10.1021/jp980887+ ↗
24. Orgaz · J. Non-Cryst. Solids · 1986 · 82 · 390
25. Brinker · 1990
26. Iler · 1979
27. Nogami · 1994 · 329
28. Belov · Sov. Phys. Dokl. · 1978 · 23 · 215
29. 10.1016/0022-3093(82)90086-210.1016/0022-3093(82)90086-2 ↗
30. 10.1103/PhysRevLett.80.514510.1103/PhysRevLett.80.5145 ↗
31. 10.1038/210257a010.1038/210257a0 ↗
32. 1995
33. 10.1063/1.47737410.1063/1.477374 ↗
34. Chrzanowski · Solid State Phys. · 1989 · 70 · 11
35. 10.1016/0038-1098(82)90329-510.1016/0038-1098(82)90329-5 ↗
36. Martínez · Rev. Mex. Fís. · 1998 · 44 · 575
37. Vukcetich · J. Non-Cryst. Solids · 1982 · 48 · 3110.1016/0022-3093(82)90244-7 ↗
38. 10.1016/0166-9834(82)80156-510.1016/0166-9834(82)80156-5 ↗
39. Colthup · 1975
40. 10.1103/PhysRevLett.53.242910.1103/PhysRevLett.53.2429 ↗
41. 10.1002/(SICI)1097-4555(199912)30:12<1099::AID-JRS490>3.0.CO;2-010.1002/(SICI)1097-4555(199912)30:12<1099::AID-JRS490>3.0.CO;2-0 ↗
42. Armitage · 1972
43. 10.1063/1.35227110.1063/1.352271 ↗
44. 10.1016/0022-3093(88)90062-210.1016/0022-3093(88)90062-2 ↗
45. 10.1016/0022-3093(94)00476-510.1016/0022-3093(94)00476-5 ↗