Converting CoS-TEA hybrid compound to CoS defective ultrathin nanosheets and their enhanced photocatalytic property

Yein, Win Thi; Wang, Qun; Wu, Jinzhu; Wu, Xiaohong

doi:10.1016/j.molliq.2018.07.036

Cited by 11 publications

(3 citation statements)

References 55 publications

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“…The generated H 2 O 2 is then activated on the surface of CoS 2 /CoS/Ti 3 C 2 and participated in the activated process to generate •OH as the Equation (10). Due to the synergistic effect of S 2− and Co, Co(II) can be regenerated on the surface of the cathode (Equation ( 11)) [18,19]. In addition, decomposition of H 2 O 2 (Equation ( 7)) can be improved under irradiation.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, hexagonal cobalt sulfide (CoS) is commonly used in Fenton-like fields because of narrow band gap structure and efficient activation of H 2 O 2 performance, which is attributed to that CoS can provide suitable Lewis acid strength to adsorb and catalyze H 2 O 2 to produce •OH [17]. Besides, the synergistic effect of Co and S effectively promotes electron transfer and accelerates the recycling of cobalt active species [18,19]. It is well known that cobalt sulfide with different formulas can interact with each other to form heterojunction with two opposite charge space field and built-in electric field area [20][21][22], which will promote the formation of uneven charge distribution.…”

Section: Introductionmentioning

confidence: 99%

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Titanium Carbide Composite Hollow Cobalt Sulfide Heterojunction with Function of Promoting Electron Migration for Efficiency Photo-Assisted Electro-Fenton Cathode

et al. 2023

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Constructing heterostructure within electrocatalysts proves to be an attractive approach to adjust the interfacial charge redistribution to promote the adsorption of reactive species and accelerate the charge transfer. Herein, we present the one-pot solvothermal synthesis of Ti3C2 supported hollow CoS2/CoS microsphere heterostructure with uneven charge distribution as the cathodic catalyst, which displays a superior quasi-first-order degradation rate (0.031 min−1) for sulfamethazine (SMT) in photo-assisted electric–Fenton (EF) process. CoS2/CoS/Ti3C2 is proven to favor the 2e− oxygen reduction reaction (ORR), with H2O2 selectivity up to 76%. The built-in potential present in the heterojunction helps to accelerate electron transfer, thus promoting the production of H2O2. Subsequently, H2O2 is rapidly activated to produce ∙OH due to the synergistic effect of Co and S. Notably, CoS2/CoS/Ti3C2 exhibits enhanced photo-assisted EF (PEF) performance under light. The excellent photocatalysis properties of CoS2/CoS/Ti3C2 are attributed to that the unique hollow microsphere structure of catalyst improves the light absorption, and the uneven charge distribution of CoS2/CoS heterojunctions promotes the separation of photo-generated holes and electrons. Given the above advantages, CoS2/CoS/Ti3C2 cathode delivers a high degradation rate of 98.5%, 91.8%, and 94.5% for SMT, bisphenol A, and sulfadiazine, respectively, with TOC removal efficiency of 76% for SMT with 120 min. This work provides a novel light of the design and construction of efficient PEF cathodes for the treatment of antibiotic wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Titanium Carbide Composite Hollow Cobalt Sulfide Heterojunction with Function of Promoting Electron Migration for Efficiency Photo-Assisted Electro-Fenton Cathode

et al. 2023

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“…[42] Moreover, various efforts further reveal that its excellent electron/charge transfer properties, narrow bandgap, and efficient catalytic activation endow CoS with excellent catalytic capability. [43][44][45] In overall, in our effort, excellent performance and utilization attributes (high rate at 2.0 C and cycling stability at >1800 cycles; large areal capacity and performance stability 6.5-8.1 mAh cm À2 ) are achieved.…”

Section: Introductionmentioning

confidence: 99%

In Situ Synthesis Method of Approaching High Surface Capacity Sulfur and the Role of Cobalt Sulfide as Lithium–Sulfur Battery Materials

Lim,

Vafakhah,

et al. 2023

Small Science

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Lithium–sulfur batteries (Li–S) are potentially applicable in electrification and the replacement of fossil fuels due to the high energy density and the economy of sulfur. However, effectively an insulator, sulfur is known to suffer from inert electrochemical and poor conductivity. By synthetically incorporating conductive, low‐dimensional carbonaceous composites acting as both containment hosts and catalysts to active materials, this work entails an effective and straightforward materials engineering approach in fundamentally remodeling active materials utilization and activation. This synthetic‐based approach highlights direct processing capabilities than traditional thermal infusion processes without compromising performance and addresses the low activation, poor conductivity as well as alleviating side reactions due to polysulfide species. Motivated by recent efforts in excellent catalytic properties of cobalt sulfide (CoS)‐based materials, in this work, high‐performance CoS‐based carbonaceous composites are designed and employed, alleviating side reactions. These sulfide‐based catalysts are further elucidated in their role in facilitating charge/discharge of active materials, and assessed on practical polysulfide and side reaction alleviation with respect to various discharge/charge states. Proof‐of‐concept devices demonstrate the following performance highlights: 1) high‐performance stability, 2) strong polysulfide adsorption capability and kinetic characteristics, 3) large and workable areal capacity, and active materials loading.

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Construction of Z-scheme heterojunction CoS/CdS@g-C3N4 hollow sphere with spatical charge separation for enhanced photocatalytic hydrogen production

Zhang

Liang

Wang

et al. 2023

Applied Surface Science

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Converting CoS-TEA hybrid compound to CoS defective ultrathin nanosheets and their enhanced photocatalytic property

Cited by 11 publications

References 55 publications

Titanium Carbide Composite Hollow Cobalt Sulfide Heterojunction with Function of Promoting Electron Migration for Efficiency Photo-Assisted Electro-Fenton Cathode

Titanium Carbide Composite Hollow Cobalt Sulfide Heterojunction with Function of Promoting Electron Migration for Efficiency Photo-Assisted Electro-Fenton Cathode

In Situ Synthesis Method of Approaching High Surface Capacity Sulfur and the Role of Cobalt Sulfide as Lithium–Sulfur Battery Materials

Construction of Z-scheme heterojunction CoS/CdS@g-C3N4 hollow sphere with spatical charge separation for enhanced photocatalytic hydrogen production

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