Simonkolleite nano-platelets: Synthesis and temperature effect on hydrogen gas sensing properties

Abstract

In this work, the new refined mineral platelets-like morphology of simonkolleite based particles described by Shemetzer et al. (1985) H 2 O n a n o -p l a t e l e t s r e v e a l e d a significant and singular H 2 gas sensing characteristics. The operating temperature was f o u n d t o p l a y a k e y r o l e on the sensing properties of simonkolleite. The effect of temperature o n the simo nkolleite sample as a hydrogen gas sensor was studied by recording the change in resistivity of the film in presence of the test gas. The results on the se ns it iv it y and respo nse t ime a s per co mpari so n to ear lie r repo r ted Zn O based sensors are indicated and discussed.

Green synthesis of ZnO nanoparticles by Aspalathus linearis: Structural & optical properties

“…Likewise, the well established multi-functionality of doped ZnO as a transparent conducting oxide of choice, an effective piezoelectric, a selective gas sensor and an efficient catalyst support among others, has made it as one of the most studied simple oxide in its nano-scaled form in the modern era [5].…”

Simonkolleite-graphene foam composites and their superior electrochemical performance

“…Recently, simonkolleites (SimonK, also known as zinc chloride hydroxide monohydrate, Zn 5 (OH) 8 Cl 2 ·H 2 O) have received enormous attention due to their morphological properties composed of slabs and platelets suitable for numerous applications ranging from gas sensing [10] to materials for supercapacitor applications [11]. They also crystallize hexagonally with a perfect cleavage parallel to the (001) direction [12].…”

“…These vacancies may then act as n-type donors and subsequently improve the material's conductivity [10]. For supercapacitor applications, the abundance of a hexagonal microplatelet interactive network will likely provide the surface required for ionic surface interactions during operation.…”

Microwave-assisted synthesis of simonkolleite nanoplatelets on nickel foam–graphene with enhanced surface area for high-performance supercapacitors

“…Simonkolleite forms hexagonal micro to nanoplatelet crystals with a cleavage parallel to the (0 0 1) direction [26]. It is a soft compound with a Mohs hardness of $1.5 and a specific gravity of 3.2 [23]. The crystal structure of the synthesis analogue of simonkolleite was reported by Nowacki and Silverman [27] and Allmann [28].…”

“…Simonkolleites (Zn 5 (OH) 8 Cl 2 ÁH 2 O) nanoplatelets, which possess a high degree of anisotropy with nanoscale thickness and microlength in other dimensions, have attracted tremendous attention due to their unique morphology associated with prominent physical and chemical properties and potential applications, such as in H 2 gas sensing and energy storage applications [23][24][25]. Simonkolleite forms hexagonal micro to nanoplatelet crystals with a cleavage parallel to the (0 0 1) direction [26].…”