Plasma modified BiOCl/sulfonated graphene microspheres as efficient photo-compensated electrocatalysts for the oxygen evolution reaction

Abstract

<p>Plasma regulation of oxygen vacancies in BiOCl/sulfonated graphene composites enables light energy compensation for the electrocatalytic OER process.</p>

Solution Plasma‐Assisted Multivariate Metal Nanoalloys Encapsulated with Carbon Dots for Efficient Oxygen Evolution Reaction

“…The existence of oxygen vacancies can advantageously adjust the electronic structure of nanohybrids, which can ensure rapid charge transfer and optimize the adsorption energy of the intermediates [46] . Owing to the etching effect of plasma, the nanostructure surface also produces structural defects, which makes the full exposure of more active sites, promoting the OER performance [27] …”

“…[46] Owing to the etching effect of plasma, the nanostructure surface also produces structural defects, which makes the full exposure of more active sites, promoting the OER performance. [27] In addition, the stability of CDs@(PdFeNiCo)Nb x and IrO 2 was assessed by monitoring their chronoamperometric responses, which were recorded at a current density of 10 mA cm À 2 for 30 h in 1 M KOH electrolyte. Figure 3f indicates no substantial variation in the polarization curves of CDs@-(PdFeNiCo)Nb x after 30 h measurements.…”

“…Plasma modification on Co 3 O 4 greatly enhanced OER ability, gaining 235 mV overpotential at 10 mA cm −2 [26] . Further, BiOCl/sulfonated graphene composites with adequate oxygen vacancies were fabricated through a hydrothermal method and plasma modification, providing 270 mV at 10 mA cm −2 with a Tafel slope of 52 mV dec −1 [27] . Nonetheless, the exploitation of electrocatalyst for the efficient OER via the SP method is still in its infancy stage.…”

Ferroelectric Polarization and Iron Substitution Synergistically Boost Electrocatalytic Oxygen Evolution Reaction in Bismuth Oxychloride Nanosheets

“…However, to make OER cost-effective, non-noble-metal-based catalysts are more suitable. − The systematic study of first-row transition-metal oxides and their spinel forms, perovskite, and layered double hydroxide has been carried out as possible electrocatalysts for OER. − The high electrocatalytic efficacy of catalysts based on transition metals is mainly due to their 3d electronic configuration and the existence of vacant d orbitals or unpaired electrons. This results in an enhanced capacity for oxygen adsorption on the surface of the catalyst . Certain main group metal-based composites exhibit favorable electrocatalytic activity, attributed to their chemical resemblance to transition metals.…”

Synthesis, Functional Modifications, and Diversified Applications of Hybrid BiOCl-Based Heterogeneous Photocatalysts: A Review

“…Bismuth oxychloride (BiOCl), as a typical p-type semiconductor, has attracted much attention from scientific researchers because of its low toxicity, unique optical and electrical properties, superior photocatalytic performances, as well as potential applications in the fields of the degradation of organic pollutants, energy storage, lithium battery anodes, UV photodetectors, and hydrogen production. ,− The above-mentioned merits accelerate the morphology-controlled synthesis of BiOCl micro-/nanostructures. So far, the various morphologies of BiOCl micro-/nanostructures have been developed, including zero-dimensional (0D) nanoparticles, one-dimensional (1D) nanorods/nanowires, two-dimensional (2D) nanosheets/nanobelts/nanoplates, and three-dimensional (3D) hierarchical architectures. − Although different BiOCl morphologies exhibit distinctive merits in various applications, the photocatalysis of individual BiOCl semiconductors is still limited due to its wide band gap and high recombination rate of photoinduced charge carriers. − Therefore, it is necessary to explore novel strategies to optimize the photocatalytic performances of individual BiOCl.…”