Potentiometric creatinine biosensor based on ZnO nanowires

摘要: Nanotechnology is a technology of the design and applications nanoscale materials with their fundamentally new properties functions. Nanosensor devices based on nanomaterials provide very fast response, low-cost, long-life time, easy to use for unskilled users, high-efficiency.1-D ZnO nanostructures have great potential in various sensing applications. wide band gap (3.37 eV at room temperature) semiconductor having large exciton binding energy (60 meV) excellent chemical stability, electrical, optical, piezoelectric pyroelectric properties. By doping transition metals (TM) into matrix, can be tuned its temperature ferromagnetic behavior enhanced, which TM-doped as promising candidate optoelectronic, spintronics high performance sensors devices. The synthesis via low hydrothermal method considered technique due cost, environmental friendly, simple solution process, diverse 1-D achieved, scale production any type substrate, controlled by growth parameters. However, synthesize shape, structure uniform size distribution area substrates desirable properties, cost processes are interest it big challenge present.The main purpose this dissertation aims develop techniques (Fe, Mn)-doped method, characterize enhance functional developing such biosensors clinical diagnoses monitoring applications, piezoresistive UV photodetector.The first part deals under different conditions structural characterization. possible parameters affecting alter morphology, uniformity were investigated. Well-aligned nanorods been fabricated sensitive sensor. development creatinine biosensor glucose indirect determination mercury ions an inexpensive users highly sensitive, selective, stable, reproducible, interference resistant, response time nanorods.The second presents Mn)-doped-ZnO preparation conditions, characterization fabrication photodetectors demonstrated. condition that influences structures Mn-doped-ZnO NRs/PEDOT:PSS Schottky diodes used sensor photodetector studied Fe-doped NRs/FTO diode has also photodetector. Finally, brief outlook future challenges relating opportunities presented last dissertation.