Recent advances in carbon‐based materials for solar‐driven interfacial photothermal conversion water evaporation: Assemblies, structures, applications, and prospective

Carbon Energy, Journal Year: 2023, Volume and Issue: 5(11)

Published: March 20, 2023

Abstract The shortage of fresh water in the world has brought upon a serious crisis to human health and economic development. Solar‐driven interfacial photothermal conversion evaporation including evaporating seawater, lake water, or river been recognized as an environmentally friendly process for obtaining clean low‐cost way. However, transport is restricted by itself solar energy absorption capacity's limits, especially finite rates insufficient working life. Therefore, it important seek materials that can efficiently absorb reasonably design solar‐driven devices. This paper reviews research progress carbon‐based mechanism evaporation, well summary development Based on achievements devices fields seawater desalination electric generation recent years, challenges opportunities faced are discussed. prospect practical application technology foreseen, theoretical guidance provided further this technology.

Language: Английский

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Covalent Organic Frameworks Containing Dual O₂Reduction Centers for Overall Photosynthetic Hydrogen Peroxide Production

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(9)

Published: Dec. 28, 2022

Covalent organic frameworks (COFs) are highly desirable for achieving high-efficiency overall photosynthesis of hydrogen peroxide (H2 O2 ) via molecular design. However, precise construction COFs toward photosynthetic H2 remains a great challenge. Herein, we report the crystalline s-heptazine-based (HEP-TAPT-COF and HEP-TAPB-COF) with separated redox centers efficient production from pure water. The spatially orderly active sites in HEP-COFs can efficiently promote charge separation enhance photocatalytic production. Compared HEP-TAPB-COF, HEP-TAPT-COF exhibits higher efficiency integrating dual reduction s-heptazine triazine moieties. Accordingly, bearing remarkable solar-to-chemical energy 0.65 % high apparent quantum 15.35 at 420 nm, surpassing previously reported COF-based photocatalysts.

Language: Английский

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Interfacial Chemical Bond and Oxygen Vacancy‐Enhanced In₂O₃/CdSe‐DETA S‐scheme Heterojunction for Photocatalytic CO₂ Conversion

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(23)

Published: March 2, 2023

Abstract The S‐scheme heterojunctions have great potential for photocatalytic carbon dioxide reduction due to their unique carrier migration pathways, superior separation efficiencies, and high redox capacities. However, the precise process of oriented powerful electron transport remains a challenge. Herein, an InOCd bond‐modulated heterojunction In 2 O 3 /CdSe‐DETA is synthesized by simple microwave‐assisted hydrothermal method accelerated photogenerated transfer. Meanwhile, oxygen vacancies (Vo) capture effect. Consequently, thanks synergistic effect this In‐Vo‐In‐O‐Cd structural units at interface, electrons are extracted rapidly transferred surface‐active sites, which improves electronic coupling CO . This finding precisely adjusts transfer pathway shortens distance. chemical bond established in heterostructure with (Vo‐In ) provides new insights into reduction.

Language: Английский

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Solar Energy Catalysis

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(29)

Published: April 26, 2022

When it comes to using solar energy promote catalytic reactions, photocatalysis technology is the first choice. However, sunlight can not only be directly converted into chemical through a photocatalytic process, also different energy-transfer pathways. Using as source, reactions proceed independently, and coupled with other technologies enhance overall efficiency. Therefore, sunlight-driven are diverse, need given specific definition. We propose timely perspective for driven by give them definition, namely "solar catalysis". The concept of types catalysis, such photocatalysis, photothermal cell powered electrocatalysis, pyroelectric highlighted. Finally, their limitations future research directions discussed.

Language: Английский

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Enabling Internal Electric Fields to Enhance Energy and Environmental Catalysis

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(11)

Published: Jan. 29, 2023

Abstract Recent years have witnessed an upsurge of interest in exploiting advanced photo‐/electrocatalysts for efficient energy conversion and environmental remediation. Constructing internal electric fields has been highlighted as a rising star to help facilitate various catalytic processes, with the merits promoting charge transfer/separation, optimizing redox potential creating effective active/adsorption sites. Internal are usually formed by polarization uneven distributions between different constituent layers, which widely exist piezoelectrics, polar surface terminations, heterostructure materials. Herein, groundbreaking interdisciplinary overview latest advances construction improve photo(electro)catalytic electrocatalytic activity is provided. This critical review begins encyclopedic summary classification, advantages, synthesis strategies fields. Subsequently, identification methods thoroughly discussed based on characterization techniques, experiments, theoretical calculations, can provide profound guidance in‐depth study To elaborate theory–structure–activity relationships fields, corresponding reaction mechanisms, modification strategies, performance jointly discussed, along discussion their practical applications. Finally, insightful analysis challenges future prospects field‐based catalysts discussed.

Language: Английский

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Single‐Atom or Dual‐Atom in TiO₂Nanosheet: Which is the Better Choice for Electrocatalytic Urea Synthesis?

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(8)

Published: Nov. 30, 2022

As rising star materials, single-atom and dual-atom catalysts have been widely reported in the electro-catalysis area. To answer key question: catalysts, which is better for electrocatalytic urea synthesis? we design two types of via a vacancy-anchorage strategy: Pd1 -TiO2 Cu1 nanosheets. An ultrahigh activity 166.67 molurea molPd-1 h1 with corresponding 22.54 % Faradaic efficiency at -0.5 V vs. reversible hydrogen electrode (RHE) achieved over , much higher than that . Various characterization including an situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) theoretical calculations demonstrate site more favorable producing urea, experiences C-N coupling pathway lower energy barrier compared

Language: Английский

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Regulation Strategy of Transition Metal Oxide-Based Electrocatalysts for Enhanced Oxygen Evolution Reaction

Accounts of Materials Research, Journal Year: 2022, Volume and Issue: 3(10), P. 1088 - 1100

Published: Sept. 26, 2022

ConspectusThe deployment of hydrogen as alternative energy carrier is a promising route to reduce the consumption fossil fuel and achieve "zero carbon" target. Water electrolysis, powered by renewable sources, regarded most environmentally friendly efficient technology for production. Generally, sluggish oxygen evolution reaction (OER) process at anode predominantly limits efficiency water electrolysis. Therefore, developing highly electrocatalysts accelerate OER kinetic has always been crucial hot topic. Recently, transition metal oxide (TMO)-based materials have attracted much attention because their facile fabrication, low cost, synergistic effects between coupled metals. However, further enhancement catalytic performance TMO encounters bottleneck originated from limited regulation strategies.Typically, strategies oxide-based could be classified into three different levels. (1) For bulk electrocatalyst, reducing particle size would generate more catalytically active sites, which usually adopted basic method enhance overall activities. simple reduction in demonstrated promotion performance, intrinsic activity individual sites still very low. (2) To TMO, mesoscale modulation are proposed, involve optimization interfaces where embedded in, including surface reconstruction, constructing heterostructure, phase engineering. (3) In addition interface modulation, remarkable focus on enhancing atomic level, such heteroatom doping, defect engineering, so on. themselves, recent advances that external field can also manipulate property TMO-based coupling with sites. All these afford considerable opportunities fundamental investigation practical applications electrocatalysts.In this Account, we highlighted progress electrocatalysts. We started introduction two mechanisms process. Then conducted an in-depth discussion about used activities electrocatalysts, application field. end Account summary current challenges point out some possible future designing

Language: Английский

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Photocatalysis for synergistic water remediation and H2 production: A review

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 472, P. 145066 - 145066

Published: July 29, 2023

Language: Английский

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Reinforcing the Efficiency of Photothermal Catalytic CO₂ Methanation through Integration of Ru Nanoparticles with Photothermal MnCo₂O₄ Nanosheets

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 23761 - 23771

Published: Nov. 20, 2023

Carbon dioxide (CO2) hydrogenation to methane (CH4) is regarded as a promising approach for CO2 utilization, whereas achieving desirable conversion efficiency under mild conditions remains significant challenge. Herein, we have identified ultrasmall Ru nanoparticles (∼2.5 nm) anchored on MnCo2O4 nanosheets prospective photothermal catalysts methanation at ambient pressure with light irradiation. Our findings revealed that exhibit dual functionality substrates localized temperature enhancement and photocatalysts electron donation. As such, the optimized Ru/MnCo2O4-2 gave high CH4 production rate of 66.3 mmol gcat-1 h-1 (corresponding 5.1 mol gRu-1 h-1) 96% selectivity 230 °C irradiation (420-780 nm, 1.25 W cm-2), outperforming most reported plasmonic metal-based catalysts. The mechanisms behind intriguing catalytic performance improvement were substantiated through comprehensive investigation involving experimental characterizations, numerical simulations density functional theory (DFT) calculations, which unveiled synergistic effects enhanced charge separation efficiency, improved reaction kinetics, facilitated reactant adsorption/activation accelerated intermediate over Ru/MnCo2O4. A comparison study showed that, identical external input energy during reaction, had much higher compared Ru/TiO2 Ru/Al2O3. This underscores pivotal role played by supports believed engender heightened interest in metal conditions.

Language: Английский

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Recent advances in synthesis methods and surface structure manipulating strategies of copper selenide (CuSe) nanoparticles for photocatalytic environmental and energy applications

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 113125 - 113125

Published: May 23, 2024

Language: Английский

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