Visible and infrared solar radiation upconversion for water splitting <i>via</i> a surface plasmon-passivated strategy

Xue, Ruiting; Huang, Chenguang; Deng, Jian; Yang, Lei; Li, Lei; Fan, Xiaoxing

doi:10.1039/d1ta09151d

Cited by 10 publications

(5 citation statements)

References 49 publications

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“…Therefore, the chemical structure evolution of C 7 H 8 by one‐step multiple proton coupled electron transfer is thermodynamically more favorable if kinetics permits, thus avoiding the generation of high‐energy free radicals. [ 35 ] This electron tunneling reaction was in accordance with the metal catalysis characteristics, [ 46 ] and Ag‐QDs were considered as the active center of photooxidation.…”

Section: Resultsmentioning

confidence: 98%

“…[33] Linic et al revealed the underlying mechanistic details of direct plasmon-driven charge transfer through time-dependent in situ surface-enhanced Raman scattering measurements. [34] Direct electron transfer does not suffer from energy dissipation problems (such as electron-electron and electron-phonon scattering), and it is actually a process of electron tunneling with an extremely high electron-hole separation efficiency (excited electrons do not have enough momentum to reverse transfer), [35] exhibiting promising industrial application prospects. However, due to the complexity of plasmonic chemistry, its photocatalytic industrialization still requires many advances in scientific fundamental and practical catalyst research.…”

Section: Introductionmentioning

confidence: 99%

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Controllable CO₂ Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Xue

Xie

et al. 2023

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The current solar‐chemical‐industry based on semiconductor photocatalyst is impractical. Metal catalysts are extensively employed in thermal‐ and electro‐catalysis industries, but unsuitable for direct‐driven photocatalysis. Herein, silver quantum dots (Ag‐QDs) are synthesized on support via an in situ photoreduction method, and in situ photocatalysis temperature programmed dynamics chemisorption desorption analyses are designed to demonstrate that Ag‐QDs should be the actual photocatalytic sites. The surface plasmon resonance of Ag‐QDs could harvests entire visible solar, and the plasmon‐driven charge‐transfer exhibits opposite directions at the interface when supports are different. Consequently, Ag‐QDs could be alternatively regulated as oxidation or reduction active centers. Furthermore, Ag‐QDs excite electron tunneling transfer with adsorbate, which does not generate high‐energy free‐radical intermediates. As a result, the efficiencies of hydrocarbon photooxidation and CO2 photoreduction are improved in several orders of magnitude. Evidently, the Ag‐QDs direct photocatalytic technology greatly promotes solar‐chemical‐industry applications.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Controllable CO₂ Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Xue

Xie

et al. 2023

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“…[ 13,32 ] Collectively, the modified state of π * electrons could be likely attributed to the non‐covalent dipole–dipole interaction between dipoles of the PDA and dipoles of the oxidized carbon defects. [ 26a,33 ] Consequently, the modified local electronic configuration of carbon defective sites would likely to influence the adsorption/desorption strength of oxygen and ORR intermediates, thereby changing the selectivity of ORR on the CB‐PDA‐A. [ 27,34 ]…”

Section: Resultsmentioning

confidence: 99%

Dipole–Dipole Tuned Electronic Reconfiguration of Defective Carbon Sites for Efficient Oxygen Reduction into H₂O₂

Su,

Jiang,

Xiao

et al. 2023

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Metal‐free carbon‐based materials are one of the most promising electrocatalysts toward 2‐electron oxygen reduction reaction (2e‐ORR) for on‐site production of hydrogen peroxide (H2O2), which however suffer from uncontrollable carbonizations and inferior 2e‐ORR selectivity. To this end, a polydopamine (PDA)‐modified carbon catalyst with a dipole–dipole enhancement is developed via a calcination‐free method. The H2O2 yield rate outstandingly reaches 1.8 mol gcat−1 h−1 with high faradaic efficiency of above 95% under a wide potential range of 0.4–0.7 VRHE, overwhelming most of carbon electrocatalysts. Meanwhile, within a lab‐made flow cell, the synthesized ORR electrode features an exceptional stability for over 250 h, achieved a pure H2O2 production efficacy of 306 g kWh−1. By virtue of its industrial‐level capabilities, the established flow cell manages to perform a rapid pulp bleaching within 30 min. The superior performance and enhanced selectivity of 2e‐ORR is experimentally revealed and attributed to the electronic reconfiguration on defective carbon sites induced by non‐covalent dipole–dipole influence between PDA and carbon, thereby prohibiting the cleavage of O–O in OOH intermediates. This proposed strategy of dipole–dipole effects is universally applicable over 1D carbon nanotubes and 2D graphene, providing a practical route to design 2e‐ORR catalysts.

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Section: Improving Charge Separationmentioning

confidence: 99%

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confidence: 99%

A Minireview: The Mechanism of H₂O₂ Photoproduction by Graphitic Carbon Nitride

Sun,

Li,

Shen

et al. 2023

Adv Energy and Sustain Res

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Hydrogen peroxide (H2O2) is extensively used in production and life, functioning as an ecofriendly oxidant. However, the dominant method currently employed, the anthraquinone method, is not conducive to sustainable development. Recently, photocatalytic H2O2 synthesis has garnered significant attention as an environment‐friendly approach. Graphitic carbon nitride (g‐C3N4), a new type of photocatalyst, shows great potential for generating H2O2 due to its excellent stability, high photocatalytic activity, selectivity, easy adjustability, and low cost. However, the research on the mechanism of H2O2 photoproduction has not been fully understood, which limits its development and practical application. Herein, the recent progress on modified g‐C3N4 is summarized and the effect of modification methods on the photocatalytic activity and H2O2 generation process is discussed. The challenges and perspectives of g‐C3N4 toward H2O2 photoproduction are proposed.

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Visible and infrared solar radiation upconversion for water splitting via a surface plasmon-passivated strategy

Abstract: The current photocatalytic technology for water splitting usually localized in specific short-wavelength photons. Herein, we used surface plasmon resonance (SPR) of noble metal to respond to a broad solar spectrum,...

Cited by 10 publications

References 49 publications

Controllable CO₂ Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Controllable CO₂ Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Dipole–Dipole Tuned Electronic Reconfiguration of Defective Carbon Sites for Efficient Oxygen Reduction into H₂O₂

A Minireview: The Mechanism of H₂O₂ Photoproduction by Graphitic Carbon Nitride

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Visible and infrared solar radiation upconversion for water splitting via a surface plasmon-passivated strategy

Abstract: The current photocatalytic technology for water splitting usually localized in specific short-wavelength photons. Herein, we used surface plasmon resonance (SPR) of noble metal to respond to a broad solar spectrum,...

Cited by 10 publications

References 49 publications

Controllable CO2 Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Controllable CO2 Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Dipole–Dipole Tuned Electronic Reconfiguration of Defective Carbon Sites for Efficient Oxygen Reduction into H2O2

A Minireview: The Mechanism of H2O2 Photoproduction by Graphitic Carbon Nitride

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Product

Resources

About

Controllable CO₂ Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Controllable CO₂ Reduction or Hydrocarbon Oxidation Driven by Entire Solar via Silver Quantum Dots Direct Photocatalysis

Dipole–Dipole Tuned Electronic Reconfiguration of Defective Carbon Sites for Efficient Oxygen Reduction into H₂O₂

A Minireview: The Mechanism of H₂O₂ Photoproduction by Graphitic Carbon Nitride