Sulfoxide-Functional Nanoarchitectonics of Mesoporous Sulfur-Doped C₃N₅ for Photocatalytic Hydrogen Evolution

Chemistry of Materials, Год журнала: 2024, Номер 36(9), С. 4511 - 4520

Опубликована: Апрель 22, 2024

While carbon nitrides have emerged as leading materials in photocatalysis over the past two decades, innovative and facile approaches for porosity engineering (to enhance effective surface area) atomistic heteroatom doping boost catalytic activity) are presently being hunted. We herein report first synthesis of mesoporous sulfur-doped C3N5 (mesoporous (MSCNs)) with sulfoxide-functionalization via pyrolysis 5-amino-1,3,4-thiadiazole-2-thiol, utilizing nanoporous silica templates 2D 3D porous structures (KIT-6 SBA-15). Morphological physicochemical properties MSCNs been systematically evaluated. demonstrate that highly ordered structural features high areas, sulfur doping, generated defects significantly dampen exciton recombination. In addition, adequate functionalization yielding a sufficient number catalytically active sites constitute favorable set conditions, eventually resulting remarkable hydrogen generation rate 1370 μmol g–1 h–1 pollutant remediation (>97% degradation 150 min). Spectroscopic investigations density functional theory calculations reveal sulfoxide functionalities generate efficient charge-transfer pathways on catalyst's surface, thereby catalyzing reaction impeding charge carrier The implications this research offer insights into development surface/interface enhanced photocatalysis, which will inspire superior futuristic design.

Язык: Английский

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Revolutionizing Implantable Technology: Biocompatible Supercapacitors as the Future of Power Sources

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 25, 2024

Abstract Almost all implantable electronic medical devices (IEMDs) are powered by bulky Li‐ion batteries (LIBs), limiting their miniaturization and lifespan advancements. In addition, LIBs contain toxic materials flammable electrolytes that dangerous if they leak into human organs. this context, there is an urgent need to explore new approaches concepts can address the critical challenges of designing novel electrochemical energy storage systems gain a mechanistic understanding phenomena taking place in diverse scenarios. This review summarizes recent advancements biocompatible supercapacitors (B‐SCs) as power source for various IEMDs, offering potential solution these challenges. Different types IEMDs requirements briefly discussed, along with arising from applications IEMDs. Given importance electrode determining performance B‐SCs terms densities, different developments systematically reviewed. Finally, insights offered opportunities future prospects rational design next‐generation B‐SCs.

Язык: Английский

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Rationally Designed Carbon‐Based Catalysts for Electrochemical C‐N Coupling

Advanced Energy Materials, Год журнала: 2024, Номер 14(28)

Опубликована: Май 7, 2024

Abstract The electrochemical C‐N coupling process, facilitating the production of organic nitrogen substances (such as urea, methylamine, formamide, and ethylamine) via simultaneous reduction carbon dioxide (CO 2 ) small nitrogen‐based substances, stands at forefront advancing neutrality artificial cycle. This method has garnered substantial interest due to its potential economic environmental benefits. Although considerable progress been achieved in this emerging field, it still faces challenges, including slow reactant adsorption, competing side reactions, complex multi‐step pathways, resulting low yields selectivity. Strategically designing developing low‐cost exceptionally performant catalysts is crucial for cost‐effective precise C─N bonding. article offers an in‐depth review electrosynthesis valuable compounds ambient conditions from earth‐abundant resources/wastes, such CO nitrogenous molecules (nitrogen: N , nitrite: NO − nitrate: 3 ammonia: NH etc.), bond formation especially using carbon‐based catalysts. relevant mechanisms, design principles advanced electrocatalysts, impact different electrolyser designs are discussed, along with present obstacles upcoming prospects dynamic field.

Язык: Английский

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Recent Advances in Functionalized Biomass‐Derived Porous Carbons and their Composites for Hybrid Ion Capacitors

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Июль 19, 2024

Hybrid ion capacitors (HICs) have aroused extreme interest due to their combined characteristics of energy and power densities. The performance HICs lies hidden in the electrode materials used for construction battery supercapacitor components. hunt is always on locate best material terms cost-effectiveness overall optimized characteristics. Functionalized biomass-derived porous carbons (FBPCs) possess exquisite features including easy synthesis, wide availability, high surface area, large pore volume, tunable size, functional groups, a range morphologies, thermal chemical stability. FBPCs found immense use as cathode, anode dual recent literature. current review designed around two main concepts which include synthesis properties followed by utilization various types HICs. Among monovalent HICs, lithium, sodium, potassium, are given comprehensive attention, whereas zinc only multivalent HIC that focused upon corresponding literature availability. Special attention also provided critical factors govern concludes providing feasible directions future research aspects

Язык: Английский

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Hydrogen-bonded organic framework-derived, flower-on-fiber-like, carbon nanofiber electrodes for supercapacitors

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(11), С. 6712 - 6723

Опубликована: Янв. 1, 2024

Hydrogen-bonded organic frameworks (HOFs) are a new type of porous material and have great potential as electrode precursors because their high porosity.

Язык: Английский

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