Hydrogen sensing properties of Pt/Pd bimetal decorated on highly hydrophobic Si nanowires

Manganese oxide synthesized from spent Zn-C battery for supercapacitor electrode application

“…Hydrophilic materials are generally wettable and suitable for the electrode material in aqueous electrode as it can increase availability of the pores and can facilitate ion transport within the electrode. In general, equilibrium contact angle >90°, represents that surface is hydrophobic otherwise hydrophilic 44 . Furthermore, surface roughness and chemical composition are the main features to determine the surface energy and surface energy is inversely proportional to the contact angle 44 .…”

“…In general, equilibrium contact angle >90°, represents that surface is hydrophobic otherwise hydrophilic 44 . Furthermore, surface roughness and chemical composition are the main features to determine the surface energy and surface energy is inversely proportional to the contact angle 44 . Contact angle image of Mn 3 O 4 NPs is given in Fig.…”

Nanosilicon-Based Composites for (Bio)sensing Applications: Current Status, Advantages, and Perspectives

“…Therefore, different nano-Si/metal nanocomposites (MNps) have been widely employed for rationally designing and fabricating high-performance (bio)sensors for the detection of various chemical and biological species [144]. The deposition of metal nanoparticles/nanofilms over all types of nano-Si can be implemented by the following techniques: (i) magnetron sputtering [31,51,145,146,147,148,149]; (ii) immersion, chemical, and electrochemical depositions [13,20,27,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170]; (iii) thermal evaporation [32,44,171,172,173,174,175,176,177,178,179]; and (vi) laser ablation technique/pulsed laser deposition [180,181].…”

“…Nowadays, nano-Si/MNps nanocomposites have been utilized for (bio)sensors based on SERS [12,20,31,32,51,145,149,150,151,152,153,154,155,165,168,173,175,176,177,178,182,183,184], optical [13,44,158,164,167,171,180], and electrical [27,146,148,156,159,160,161,162,166,169,170,172,173,179,181,185,186] responses. Among all of these approaches, SERS of MNps decorated nano-Si is extensively exploited as the most efficient spectroscopic phenomenon for high-sensitive sensing.…”

Effects of Pt shell thickness on self-assembly monolayer Pd@Pt core-shell nanocrystals based hydrogen sensing

“…Bimetallic catalyst nanostructures are promising as sustainable energy technologies and have the potential to achieve high activity, selectivity, and stability in various applications such as fuel cells [1,2], chemical/gas sensors [3,4], catalysis [5e8], hydrogen generation [9], and hydrogen storage [10,11]. The enhanced functionality strongly depends on local chemical composition, size, and shape, in which the local coordination, surface site distribution, surface constraint, and structural flexibility have a significant influence on the intrinsic properties of the bimetallic nanostructures [12].…”