SPECTROSCOPIC STUDIES OF CHALCOGENIDE GLASS MEMBRANES OF CHEMICAL SENSORS - LOCAL-STRUCTURE AND IONIC RESPONSE

被引:7
作者
BYCHKOV, E [1 ]
机构
[1] ST PETERSBURG STATE UNIV,DEPT CHEM,ST PETERSBURG 199034,RUSSIA
关键词
CHEMICAL SENSORS; CHALCOGENIDES;
D O I
10.1016/0925-4005(94)01616-P
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Enhanced chemical durability, suitable and variable transport characteristics, actually unlimited ability to be doped or modified thus changing their structure and properties suggest an application of non-crystalline chalcogenides and chalcohalides (bulk glasses and thin films) as promising membrane materials for conventional chemical sensors and chemical microsensors selective to heavy metal ions in various liquid media. Furthermore, they can be used as convenient model materials for a better understanding of fundamentals of the ionic response. Relationships between composition, local structure, ionic and electronic transport phenomena, on the one hand, and surface-ion exchange and ionic response, on the other hand, are the main topics to be discussed in the present contribution. Mossbauer spectroscopy and surface spectroscopy studies allow important information to be obtained concerning the short- and medium-range order in the glasses as well as surface processes occurring at the glass/solution interface. It will be shown that different microstructural organizations of the glass membrane (glass-network topology, chemical and structural states of the components, etc.) lead to drastically different transport, exchange and sensor properties. Structural and mechanistic studies of this kind are, therefore, extremely important for further development and optimization of chalcogenide glass chemical sensors.
引用
收藏
页码:351 / 359
页数:9
相关论文
共 49 条
[1]   DYNAMICS OF SPIN STATE CONVERSION PROCESSES IN THE SOLID-STATE [J].
ADLER, P ;
HAUSER, A ;
VEF, A ;
SPIERING, H ;
GUTLICH, P .
HYPERFINE INTERACTIONS, 1989, 47-8 (1-4) :343-356
[2]   ION SELECTIVE ELECTROCHEMICAL SENSORS-FE+3, CU+2 [J].
BAKER, CT ;
TRACHTEN.I .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1971, 118 (04) :571-&
[3]   ELECTRIC-CONDUCTIVITY AND ION SELECTIVITY OF THE GLASSES AGPO3-PBI2, AGPO3-HGI2, AGASS2-PBI2 AND AGASS2-HGI2 [J].
BOHNKE, C ;
MALUGANI, JP ;
SAIDA, A ;
ROBERT, G .
ELECTROCHIMICA ACTA, 1981, 26 (08) :1137-1142
[4]   THE MOLECULAR-STRUCTURE OF AS2SE3 GLASS [J].
BOOLCHAND, P ;
BRESSER, WJ ;
SURANYI, P .
HYPERFINE INTERACTIONS, 1986, 27 (1-4) :385-388
[5]   MOLECULAR-PHASE SEPARATION AND CLUSTER SIZE IN GESE2 GLASS [J].
BRESSER, WJ ;
BOOLCHAND, P ;
SURANYI, P ;
HERNANDEZ, JG .
HYPERFINE INTERACTIONS, 1986, 27 (1-4) :389-392
[6]   SB-121 MOSSBAUER STUDY OF INSULATING AND ION-CONDUCTING ANTIMONY CHALCOGENIDE-BASED GLASSES [J].
BYCHKOV, E ;
WORTMANN, G .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1993, 159 (1-2) :162-172
[7]  
BYCHKOV E, 1994, SOLID STATE IONICS, V14, P165
[8]  
BYCHKOV E, 1995, SENSOR ACTUAT B-CHEM, V26, P384
[9]  
BYCHKOV E, 1995, IN PRESS SENSORS A B, V24
[10]  
BYCHKOV E, 1994, 1ST EUR SOL STAT ION