Matches in SemOpenAlex for { <https://semopenalex.org/work/W2607017935> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W2607017935 endingPage "76" @default.
- W2607017935 startingPage "1" @default.
- W2607017935 abstract "An all-solid-state hydrogen sensor working under short circuit amperometric conditions at low temperature with minor water maintenance has been developed. A simple and upscaleable method for the preparation of platinum metal nanoparticles were deposited onto the surface of a perfluorinated ion-exchange membrane without a binder by impregnation-reduction (I-R) of a cationic precursor salt. The I-R method, utilizes reactions of a tetraammine platinum(II) chloride hydrate [Pt(NH3)4]Cl2 solution as an impregnating salt with sodium borohydride NaBH4 and potassium borohydride KBH4 as a reducing agent on the membrane surface. The possibility of electroless deposition on layered perovskite Dion-Jacobson (D-J) phase materials was demonstrated by a multistep-impregnation-reduction (M-I-R) method. A series of A-site ordered D-J phase layered oxide perovskite compound A´[An-1BnX3n+1] (where A´ = H, Na, K, Rb, Cs; A = Ca, Sr; B = Nb, Ta) was synthesised by both solid state and soft chemical ion exchange reactions. High proton conductivity of 6.3x10-5 Scm-1 at 45 oC was obtained with KCa2Nb3O10 in H2 containing atmospheres. Electrode and electrolyte surfaces were characterized by XRD, optical microscopy, SEM, EDX and AFM. The chemically reduced sensing electrode from NaBH4 reductant was found to be suitable for high H2 concentration detection. The average max. sensitivity was observed to be 0.01, 0.007, and 0.008 µA cm-2 ppm-1 in the H2 partial pressure range from 1-2, 3-7 and 8-10%, respectively. For leak detection purposes, the sensing electrode prepared by using KBH4 reductant was found to be suitable in low ppm level H2 detection. An average max. sensitivity of the sensor 0.0046 µA cm-2 ppm-1 was achieved within 10-50 s. A reproducible, identical max. output current was observed upon changing the H2 concentration from 0 to 50 ppm. The sensing performance of proton conducting niobate KCa2Nb3O10 was proved in the presence of H2 concentration from 0.005 to 8 % at 45 oC. The max. sensitive current of 9.32 µA cm-2 was achieved within 5 s. The polymer based sensor has shown a relatively slow response yielding higher sensitive current, in contrast, the response of ceramic based sensor was fast and resulted in a lower current. Hydrogen gas detection of up to 80 % could be detected in the presence of 10-20 % CO2 gas. Interface models have been proposed for both polymer and ceramic based ionic conducting systems. The dissociated H2 molecule species transport along the surface was faster than the bulk diffusion process. The simple construction of the cell and its performance characteristics make the device very promising for portable and compact H2 sensor applications." @default.
- W2607017935 created "2017-04-28" @default.
- W2607017935 creator A5086184250 @default.
- W2607017935 date "2007-05-02" @default.
- W2607017935 modified "2023-09-22" @default.
- W2607017935 title "Development of hydrogen sensors based on polymeric and ceramic proton conductors" @default.
- W2607017935 hasPublicationYear "2007" @default.
- W2607017935 type Work @default.
- W2607017935 sameAs 2607017935 @default.
- W2607017935 citedByCount "0" @default.
- W2607017935 crossrefType "dissertation" @default.
- W2607017935 hasAuthorship W2607017935A5086184250 @default.
- W2607017935 hasConcept C113196181 @default.
- W2607017935 hasConcept C131540310 @default.
- W2607017935 hasConcept C139369640 @default.
- W2607017935 hasConcept C13965031 @default.
- W2607017935 hasConcept C147789679 @default.
- W2607017935 hasConcept C161790260 @default.
- W2607017935 hasConcept C17525397 @default.
- W2607017935 hasConcept C178790620 @default.
- W2607017935 hasConcept C179104552 @default.
- W2607017935 hasConcept C185592680 @default.
- W2607017935 hasConcept C192562407 @default.
- W2607017935 hasConcept C2778931688 @default.
- W2607017935 hasConcept C2780048404 @default.
- W2607017935 hasConcept C41625074 @default.
- W2607017935 hasConcept C43617362 @default.
- W2607017935 hasConcept C512968161 @default.
- W2607017935 hasConcept C518104683 @default.
- W2607017935 hasConcept C52859227 @default.
- W2607017935 hasConcept C55493867 @default.
- W2607017935 hasConcept C68801617 @default.
- W2607017935 hasConcept C70468152 @default.
- W2607017935 hasConceptScore W2607017935C113196181 @default.
- W2607017935 hasConceptScore W2607017935C131540310 @default.
- W2607017935 hasConceptScore W2607017935C139369640 @default.
- W2607017935 hasConceptScore W2607017935C13965031 @default.
- W2607017935 hasConceptScore W2607017935C147789679 @default.
- W2607017935 hasConceptScore W2607017935C161790260 @default.
- W2607017935 hasConceptScore W2607017935C17525397 @default.
- W2607017935 hasConceptScore W2607017935C178790620 @default.
- W2607017935 hasConceptScore W2607017935C179104552 @default.
- W2607017935 hasConceptScore W2607017935C185592680 @default.
- W2607017935 hasConceptScore W2607017935C192562407 @default.
- W2607017935 hasConceptScore W2607017935C2778931688 @default.
- W2607017935 hasConceptScore W2607017935C2780048404 @default.
- W2607017935 hasConceptScore W2607017935C41625074 @default.
- W2607017935 hasConceptScore W2607017935C43617362 @default.
- W2607017935 hasConceptScore W2607017935C512968161 @default.
- W2607017935 hasConceptScore W2607017935C518104683 @default.
- W2607017935 hasConceptScore W2607017935C52859227 @default.
- W2607017935 hasConceptScore W2607017935C55493867 @default.
- W2607017935 hasConceptScore W2607017935C68801617 @default.
- W2607017935 hasConceptScore W2607017935C70468152 @default.
- W2607017935 hasLocation W26070179351 @default.
- W2607017935 hasOpenAccess W2607017935 @default.
- W2607017935 hasPrimaryLocation W26070179351 @default.
- W2607017935 hasRelatedWork W1963720289 @default.
- W2607017935 hasRelatedWork W1998132396 @default.
- W2607017935 hasRelatedWork W2012250701 @default.
- W2607017935 hasRelatedWork W2020997450 @default.
- W2607017935 hasRelatedWork W2026636189 @default.
- W2607017935 hasRelatedWork W2054698781 @default.
- W2607017935 hasRelatedWork W2060309422 @default.
- W2607017935 hasRelatedWork W2062365330 @default.
- W2607017935 hasRelatedWork W2065445916 @default.
- W2607017935 hasRelatedWork W2092610259 @default.
- W2607017935 hasRelatedWork W2097434957 @default.
- W2607017935 hasRelatedWork W2123926164 @default.
- W2607017935 hasRelatedWork W2163451000 @default.
- W2607017935 hasRelatedWork W2299975333 @default.
- W2607017935 hasRelatedWork W2358912112 @default.
- W2607017935 hasRelatedWork W2768590771 @default.
- W2607017935 hasRelatedWork W3156050647 @default.
- W2607017935 hasRelatedWork W65276419 @default.
- W2607017935 hasRelatedWork W2943699144 @default.
- W2607017935 hasRelatedWork W2960779669 @default.
- W2607017935 isParatext "false" @default.
- W2607017935 isRetracted "false" @default.
- W2607017935 magId "2607017935" @default.
- W2607017935 workType "dissertation" @default.