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Nowadays, there are many reliable characterization techniques for the study of adsorption properties in gas phase. However, the techniques available for the study of adsorption processes in solution, rely on indirect characterization techniques that measure the adsorbate concentration remaining in solution. In this work, we present a sensing method based on the magnetic properties of metal-organic frameworks (MOFs) containing paramagnetic metal centres, which stands out for the rapidity, low cost and in situ direct measurement of the incorporated adsorbate within the porous material. To illustrate this sensing technique, the adsorption in solution of four MOFs have been characterized: MIL-88A(Fe), MOF-74(Cu, Co) and ZIF-67(Co). Our simple and efficient method allows the direct determination of the adsorbed mass, as well as the measurement of adsorption isotherm curves, which we hope will greatly advance the study of adsorption processes in solution, since this method is independent of the chemical nature of the adsorbate that often makes its quantification difficult.

Naturan auto-garbiketa edo bakterioen aurkako propietate bitxiak aurkezten duten izaki bizidun ugari daude. Lan honetan, ñame edo loto lorea bezalako landareak eta zenbait animaliak aurkezten dituzten propietateak, auto-garbitzeko gaitasuna edo bakterioen aurkako propietateak azalduko dira, esate baterako, hauen gainazaleko topografiaren eta bustitze-ahalmenaren arteko loturak. Gainazalaren azterketa sakonek agerian utzi dute gainazal hierarkikoak (mikro- eta nano-egiturak dituztenak) eta gainazal homogeneoak (egitura unitariodunak) daudela, eta topografia propietate berezien erantzule dela. Horrez gain, gaur egun natura imitatzeko eta artifizialki gainazal zimurrak sortzeko oso erabiliak diren goitik beherako eta behetik gorako metodoak deskribatuko dira.