Green Chemistry, Год журнала: 2023, Номер 25(7), С. 2771 - 2781
Опубликована: Янв. 1, 2023
A low-cost and eco-friendly photoanode was constructed using a unique nanowire structure, which could efficiently couple H 2 evolution with bio-alcohol being oxidized quantitatively to acid in water.
Язык: Английский
Advanced Optical Materials, Год журнала: 2021, Номер 9(17)
Опубликована: Май 31, 2021
Abstract The high‐profile candidacy of low‐dimensional metal‐halide single crystals as promising light emitters originates from the intriguing emission properties (e.g., extremely broad luminescence spectra, large Stokes shift, high color rendition), which have enabled recent great achievements on their application in lighting, artificial illumination, and scintillators. Among family crystals, zero‐dimensional (0D) materials been featured lowest dimensionality, a consequence, strongest quantum confinement, softest lattice, electron–phonon coupling further translated into near‐unity photoluminescence (PL) efficiency with broadband emission. However, far it is known, 0D structures are significantly underexplored. Herein, an overview provided advances focus comprehensive understanding insightful perspectives behind photophysical mechanism. Additionally, challenges future opportunities currently faced by bulk metal halides discussed order to provide roadmap for development novel versatile optical suited practical applications.
Язык: Английский
Процитировано
175
ACS Applied Energy Materials, Год журнала: 2021, Номер 4(11), С. 12007 - 12031
Опубликована: Окт. 26, 2021
Photoelectrochemical (PEC) water splitting offers a sparkling and sustainable strategy for hydrogen generation, significant research enhancing the conversion efficiency of electrocatalysts is underway, since huge number publications have been reported in this field. Hence, it urgent to write comprehensive updated review order highlight latest progress design, fabrication, modification high-efficiency PEC splitting. In review, we describe basic mechanism utilizing detail. Further, highlighted recent advancements energy conversion. addition, catalysts' surface passivation, heterojunction constructions, defect engineering, photovoltage photocurrent enhancements are also highlighted.
Язык: Английский
Процитировано
139
Advanced Energy Materials, Год журнала: 2021, Номер 12(4)
Опубликована: Май 5, 2021
Abstract In recent years, halide perovskite materials have sparked intensive research, including their burgeoning development in the field of photo(electro)chemical catalysis. Halide are based on abundant and low‐cost elements with a rich structural composition variety molecular morphological dimensionalities. They possess versatile advantages over other photo(electro)catalytic owing to facile adjustment electronic properties via compositional engineering. Thus, rapid photo(electro)catalysts past 4–5 years has opened up new opportunities for diverse applications, ranging from photocatalytic organic reactions (e.g., chemical transformations, photopolymerization, degradation) solar‐to‐chemical fuel conversion water splitting CO 2 reduction). This review aims provide an up‐to‐date discussion applications materials, emphasizing crystal dimensionality, synthetic methodologies, heterojunction structures, fundamental structure‐activity relationships. Furthermore, current challenges future research directions rational design boost overall catalytic performance stability identified envisaged respectively.
Язык: Английский
Процитировано
122
Nature Communications, Год журнала: 2023, Номер 14(1)
Опубликована: Авг. 1, 2023
Metal halide perovskites have shown great promise as a potential candidate for next-generation solid state lighting and display technologies. However, generic organic ligand-free antisolvent-free solution method to fabricate highly efficient full-color perovskite light-emitting diodes has not been realized. Herein, by utilizing porous alumina membranes with ultra-small pore size templates, we successfully fabricated crystalline all-inorganic quantum wire arrays ultrahigh density excellent uniformity, using anti-solvent-free method. The confinement effect, in conjunction the high light out-coupling efficiency, results photoluminescence yield blue, sky-blue, green pure-red wires arrays. Consequently, LED devices spectrally stable electroluminescence fabricated, demonstrating external efficiencies of 12.41%, 16.49%, 26.09% 9.97%, respectively, after introducing dual-functional small molecule, which serves surface passivation hole transporting layer, vacancy healing agent.
Язык: Английский
Процитировано
70
Advanced Materials, Год журнала: 2024, Номер 36(21)
Опубликована: Фев. 11, 2024
Abstract Photoelectrochemical (PEC) catalysis provides the most promising avenue for producing value‐added chemicals and consumables from renewable precursors. Over last decades, PEC catalysis, including reduction of feedstock, oxidation organics, activation functionalization C─C C─H bonds, are extensively investigated, opening new opportunities employing technology in upgrading readily available resources. However, several challenges still remain unsolved, hindering commercialization process. This review offers an overview targeted at synthesis high‐value sustainable First, fundamentals evaluating reactions context product both anode cathode recalled. Then, common photoelectrode fabrication methods that have been employed to produce thin‐film photoelectrodes highlighted. Next, advancements systematically reviewed discussed conversion various feedstocks highly valued chemicals. Finally, prospects field presented. aims facilitating further development precursors products other pharmaceuticals.
Язык: Английский
Процитировано
31
Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(33), С. 18265 - 18271
Опубликована: Июнь 4, 2021
Abstract Optoelectronically active hybrid lead halide perovskites dissociate in water. To prevent this dissociation, here, we introduce long‐range intermolecular cation‐π interactions between A‐site cations of perovskites. An aromatic diamine like 4,4′‐trimethylenedipyridine, if protonated, can show a stacking, and therefore, serves as our cation. Consequently, 4,4′‐trimethylenedipyridinium bromide [(4,4′‐TMDP)Pb 2 Br 6 ], one‐dimensional perovskite, remains completely stable after continuous water treatment for six months. Mechanistic insights about the are obtained by single‐crystal X‐ray diffraction nuclear magnetic resonance spectroscopy. The concept interaction is further extended to another cation 4,4′‐ethylenedipyridinium ion (4,4′‐EDP), forming water‐stable (4,4′‐EDP)Pb perovskite. These then used fabricate white light‐emitting diode light up‐conversion through tunable third‐harmonic generation. Note that achieved stability intrinsic perovskite composition, unlike prior approach encapsulating unstable material (or device) water‐resistant materials. introduced be breakthrough strategy designing many more compositions low‐dimensional
Язык: Английский
Процитировано
98
Advanced Optical Materials, Год журнала: 2022, Номер 11(3)
Опубликована: Дек. 3, 2022
Abstract Recently, metal halide perovskites have attracted extensive attentions owing to their superior optoelectronic properties in various device applications, such as solar cells, photodetectors, light‐emitting diodes, lasing, photocatalysis, etc. Up now, the state‐of‐the‐art developments of perovskite‐based devices are most using lead‐halide perovskite system. However, presence lead (Pb) these devices, which is insidious bioaccumulative hazard human bodies, and a poor stability against light, heat, humidity hamper practical applications future commercialization. Therefore, scientific community searching for low‐toxicity environmental‐friendly lead‐free perovskite‐type materials back‐up strategy. Among possible Pb‐substitution strategies, trivalent bismuth cation (Bi 3+ ) possesses same electronic configuration Pb 2+ , some emerging Bi‐based derivatives experimentally characterized, exhibit comparable Pb‐based perovskites. In this review, comprehensive overview currently explored reported, with an emphasis on synthesis methods, structural diversity, photophysical properties, current potential categories. Finally, review finished critical outlook into challenges development prospects toward versatile applications.
Язык: Английский
Процитировано
71
The Journal of Physical Chemistry Letters, Год журнала: 2021, Номер 12(14), С. 3607 - 3617
Опубликована: Апрель 6, 2021
Semiconducting polycrystalline thin films are cheap to produce and can be deposited on flexible substrates, yet high-performance electronic devices usually utilize single-crystal semiconductors, owing their superior electrical mobilities longer diffusion lengths. Here we show that the performance of metal-halide perovskites (MHPs) approaches single crystals at room temperature. Combining temperature-dependent terahertz conductivity measurements ab initio calculations uncover a complete picture origins charge scattering in CH$_3$NH$_3$PbI$_3$. We Fr\"ohlich carriers with multiple phonon modes is dominant mechanism limiting mobility, grain-boundary further reducing mobility films. reconcile large discrepancy lengths between by considering photon reabsorption. Thus, MHPs offer great promise for beyond solar cells, including transistors modulators.
Язык: Английский
Процитировано
65
Advanced Materials, Год журнала: 2022, Номер 34(50)
Опубликована: Окт. 11, 2022
The interaction mechanism between the reacting species and active site of α-Fe2 O3 -based photoanodes in photoelectrochemical methanol conversion reaction is still ambiguous. Herein, a simple two-step strategy demonstrated to fabricate porous /CoFe2 O4 heterojunction for reaction. influence electronic structure interfacial effect on are investigated by constructing two different FeO6 octahedral configurations heterogeneous structures. optimal sample ZnFeCo-2 affords high photocurrent density 1.17 mA cm-2 at 0.5 V vs Ag/AgCl, which 3.2 times than that ZnFe (0.37 ). Meanwhile, also exhibits 97.8% Faraday efficiency CH3 OH HCHO, long-term stability over 40 h. Furthermore, functional theory calculations reveal heterostructured with favorable electron transfer effectively lowers adsorption, C-H bond activation, HCHO desorption energy relative pristine , resulting excellent efficiency.
Язык: Английский
Процитировано
61
Angewandte Chemie International Edition, Год журнала: 2022, Номер 62(9)
Опубликована: Дек. 29, 2022
Photoelectrochemical (PEC) water splitting is a promising approach for renewable solar light conversion. However, surface Fermi level pinning (FLP), caused by trap states, severely restricts the PEC activities. Theoretical calculations indicate subsurface oxygen vacancy (sub-Ov ) could release FLP and retain active structure. A series of metal oxide semiconductors with sub-Ov were prepared through precisely regulated spin-coating calcination. Etching X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), energy loss spectra (EELS) demonstrated Ov located at sub ∼2-5 nm region. Mott-Schottky open circuit photovoltage results confirmed states elimination de-pinning. Thus, superior performances 5.1, 3.4, 2.1 mA cm-2 1.23 V vs. RHE achieved on BiVO4 , Bi2 O3 TiO2 outstanding stability 72 h, outperforming most reported works under identical conditions.
Язык: Английский
Процитировано
50