PVP Functionalized Marigold-like MoS2 as a New Electrocatalyst for Highly Efficient Electrochemical Hydrogen Evolution

Enhanced Electrocatalytic Activity of Nickel Cobalt Phosphide Nanoparticles Anchored on Porous N-Doped Fullerene Nanorod for Efficient Overall Water Splitting

“…Remarkably, the contact angle (Figure S3) of sf-FNR/PVP decreased to 16.28° (Figure h), much smaller than that of FNR (145.47°) and sf-FNR (137.28°), indicating the hydrophilic capacity of sf-FNR/PVP was extensively enhanced, which would be beneficial for the water molecule adsorption during the electrolysis process . Meanwhile, after surface engineering, the N atom was introduced onto the surface of FNR (Figure S4 and S5), giving rise to the modified electronic structure of FNR and improved electronic conductivity (σ); e.g., the σ value of sf-FNR/PVP was 8-fold larger than that of FNR (Figure h), which would be favorable for the charge transfer in the electrocatalytic reaction . Additionally, the numerous nanopores could accelerate the release of gas bubbles generated by the electrochemical progress.…”

“…61 Meanwhile, after surface engineering, the N atom was introduced onto the surface of FNR (Figure S4 and S5), giving rise to the modified electronic structure of FNR and improved electronic conductivity (σ); e.g., the σ value of sf-FNR/PVP was 8-fold larger than that of FNR (Figure 1h), which would be favorable for the charge transfer in the electrocatalytic reaction. 62 Additionally, the numerous nanopores could accelerate the release of gas bubbles generated by the electrochemical progress. After surface engineering of the as-synthesized FNR, CoNi-LDH, a cost-effective and catalytic-active electrocatalyst for HER and OER, 21 was then introduced onto the surface of sf-FNR/PVP and confirmed by XRD (Figure S6).…”

Tumor-targeted molybdenum disulfide@barium titanate core–shell nanomedicine for dual photothermal and chemotherapy of triple-negative breast cancer cells

“…MoS 2 @BT CSNP was obtained by mixing the core-forming components (Na 2 MoO 4 ·2H 2 O, PVP, and CH 4 N 2 S) with the shell-forming compositions (C 12 H 28 O 4 Ti, C 6 H 8 O 7 , and BaCO 3 ) at 180 °C for 6 h. A possible mechanism of MoS 2 @BT CSNP formation can be stated as follows; the reduced Mo atom reacts with sulfur (S) to form MoS 2 , 37 and then the PVP molecules are adsorbed into MoS 2 via chemical interactions between the Mo–S bond with either nitrogen atoms on the pyrrole ring or oxygen atoms on the carbonyl group of PVP, resulting in the formation of the core structure. 38 Moreover, the shell is formed by the activity of citric acid (CA), a molecule that possibly primarily produces BT phase-pure particles with tiny crystallite size and less clustered secondary particles. 39 Subsequently, the oxygen atom of the CA molecule in the shell components has the potential to react with the nitrogen atom of PVP in the core via hydrogen (O–H) bonding.…”

“…The design, fabrication strategy, and surface modification of molybdenum disulfide@barium titanate (MoS 2 @BT) core-shell nanoparticles (CSNPs) are shown in Scheme 37 and then the PVP molecules are adsorbed into MoS 2 via chemical interactions between the Mo-S bond with either nitrogen atoms on the pyrrole ring or oxygen atoms on the carbonyl group of PVP, resulting in the formation of the core structure. 38 Moreover, the shell is formed by the activity of citric acid (CA), a molecule that possibly primarily produces BT phase-pure particles with tiny crystallite size and less clustered secondary particles. 39 Subsequently, the oxygen atom of the CA molecule in the shell components has the potential to react with the nitrogen atom of PVP in the core via hydrogen (O-H) bonding.…”

Electrochemical Hydrogen Evolution Reaction Triggered by Co2xMo1-xS2 (x = 0. 0.05 and 0.1) in Acidic Medium

“…Several non-noble metal materials, such as transitionmetal chalcogenides [4][5][6][7], carbides [8][9][10], phosphides [11,12], nitrides [13][14][15] and oxides [16][17][18][19][20] are currently been tested as electrocatalyst for HER. 2D-chalcogenides have gained a wide range of attention among all the other new forms of electrocatalyst due to its amazing chemical and physical properties similar to graphene [21,22].…”