Ceramics International, Год журнала: 2023, Номер 50(7), С. 10241 - 10251
Опубликована: Дек. 29, 2023
Язык: Английский
Advanced Science, Год журнала: 2024, Номер 11(22)
Опубликована: Март 22, 2024
Abstract Hydrogen storage in MgH 2 is an ideal solution for realizing the safe of hydrogen. High operating temperature, however, required hydrogen induced by high thermodynamic stability and kinetic barrier. Herein, flower‐like microspheres uniformly constructed N‐doped TiO nanosheets coated with TiN nanoparticles are fabricated to integrate light absorber thermo‐chemical catalysts at a nanometer scale driving using solar energy. situ transformed into x O y Ti/TiH distributed inside matrix during cycling, which pairs serve as absorbers that exhibit strong localized surface plasmon resonance effect full‐spectrum absorbance capability. On other hand, it theoretically experimentally demonstrated intimate interface between TiH can not only thermodynamically kinetically promote H desorption from but also simultaneously weaken Ti─H bonds hence turn improve combination weakened bonds. The uniform integration photothermal catalytic leads direct action heat generated on initiating capacity 6.1 wt.% under 27 sun.
Язык: Английский
Процитировано
18
Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(3), С. 112490 - 112490
Опубликована: Март 13, 2024
Язык: Английский
Процитировано
15
Industrial & Engineering Chemistry Research, Год журнала: 2024, Номер 63(15), С. 6743 - 6753
Опубликована: Апрель 5, 2024
The Zr-based metal–organic framework (MOF) nanoparticles by varying three different ligands (2-methylimidazole, 2-aminoterephthalic acid, and terephthalic acid) are synthesized using a solvothermal method impregnated into polysulfone membranes. These MOF membranes served as photocatalytic facilitated both the separation degradation of dyes in water. Both XRD IR analysis revealed that MOFs well interacting with membrane matrix, manifesting effective hydrophilic surface potential properties confirmed contact angle, water uptake, zeta analyses. FESEM images exposed on surface, supporting enhanced dye properties. Further, cross-sectional showed pore channels block-free, smooth, uniform. features flux antifouling compared to bare ones. As result, optimized (i.e., amine functionalized Zr-MOF-impregnated membrane) an around 57 L/m2 h, while it is ∼25 h case membrane. (rhodamine B Congo red) rejection efficacy values this 81.6 75.8%, respectively, which 2-fold higher than one. Similarly, RhB/CR solution 39.6/33.3%, only 10.2/10.4% also fouling resistance ones, estimated through reversible irreversible estimations. Furthermore, efficiency appreciable, degraded 10.7/8.2% dye, respectively. add-on induced can considerably reduce overall process cost and, especially, involving not regeneration self-cleaning but safe disposal separated surface.
Язык: Английский
Процитировано
7
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Окт. 10, 2024
Abstract Micro energy storage devices (MESDs) have emerged as promising providers for micro applications due to their integrated performance. However, the limited cycle life and low power density of microbattery, microsupercapacitor consistently impeded broader practical implementation. Herein, obtain a MESD with long life, excellent density, superior novel battery‐supercapacitor hybrid (MBSH) device is fabricated. Two types 3D microelectrodes are fabricated, namely, nanowire network anode based on PEDOT‐TiON porous cathode Ni(OH) 2 . Benefiting from unique hydrophobic characteristics PEDOT layer, high electrical conductivity TiON, conductivity, abundant ion diffusion channels microstructure, NW demonstrate exceptional cycling stability by retaining 70% capacity after 40 000 cycles. The achieved MBSH exhibits an extended voltage window ranging 0 1.9 V, impressive 77.5 mW cm −2 , 55.6 µWh Furthermore, it maintains remarkable retention rate 71.6% even undergoing 30 This innovative design paves way developing high‐performance microdevices electrochemical properties.
Язык: Английский
Процитировано
7
The Journal of Physical Chemistry C, Год журнала: 2025, Номер unknown
Опубликована: Фев. 2, 2025
The present paper reports on the fabrication, detailed structural characterizations, and theoretical modeling of titanium nitride (TiN) its isostructural oxide derivative, oxynitride (TiNO) thin films that have excellent plasmonic properties also potential to overcome limitation noble metal refractory metals. TiNO deposited at 700 °C in high vacuum conditions highest reflectance (R = ∼ 95%), largest negative dielectric constant (ε1 −161), maximal figure merit (FoM −ε1/ε2) 1.2, followed by 600 samples a 85%, ε1 −145, FoM 0.8) °C–5 mTorr sample 82%, −8, 0.3). To corroborate our experimental observations, we calculated phonon dispersions Raman active modes using virtual crystal approximation. From studies, multilayer optical model has been proposed for TiN/TiNO epitaxial obtaining individual complex functions from which many other parameters can be calculated. advantages derivatives TiN are continuation similar free electron density as acquisition additional features such oxygen-dependent semiconductivity with tunable bandgap.
Язык: Английский
Процитировано
1
ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 11(42), С. 15192 - 15206
Опубликована: Окт. 7, 2023
In the present work, a phase engineering strategy is explored toward forming titanium oxynitride (TiOxNy) by nitriding sol–gel-derived TiO2-based precursor at different nitridation temperatures ranging from 450 °C to 950 in an ammonia gas environment. The evolved Ti-oxynitride confirmed using XRD, Rietveld refinement, micro-Raman, and HRTEM lattice fringes analysis. Various physicochemical properties of are investigated comparison with Ti-oxide nitride phases obtained this study. XPS analysis shows dual +3/+4 oxidation states Ti, which can be attributed Ti–N Ti–O network system. optical absorption band gap energy found favorably altered, compared typical Ti-oxides, plasmonic material-like feature Ti-nitride From time-resolved photoluminescence spectra, lifetime excited carriers oxide, nitride, systems estimated ∼3.89, 3.83, 4.59 ns, respectively, ascribed Ohmic-interface-driven improved electron delocalization corroborated various photoelectrochemical voltammetry (cyclic linear sweep), impedance, photocurrent measurements. photocatalytic dye degradation (expressed as percentage), H2 evolution (in units μmol g–1 h–1) NH3 formation over developed system (∼91–96/1278.2/215) sole oxide (∼85–88/458.6/102) (∼79–77/619.32/174) systems. UV–visible light conversion efficiency ∼2.55%. manifested could synergy oxide-nitride facilitating effective harvesting via features inter/intratransfer charge Ohmic contacts, eventually promote multifacet redox reactions applications, demonstrated
Язык: Английский
Процитировано
12
Solar RRL, Год журнала: 2024, Номер 8(12)
Опубликована: Май 23, 2024
The present study investigates the phase formation of titanium oxynitride (TiO x N y ) system using “oxide‐to‐oxynitride” and “nitride‐to‐oxynitride” synthesis strategies. XRD patterns both materials show peaks corresponding to Ti–N Ti–O lattices, confirming Ti–oxynitride system. Accordingly, presence Ti 3+ –N 3− 4+ –2O 2− signals is also confirmed by XPS analysis. TiO derived from oxide (TO‐TON) exhibits wide visible light absorption with a narrow‐bandgap energy ≈2.30 eV, while nitride‐derived–TiO (TN‐TON) relatively wide‐bandgap (≈2.92 eV) along plasmonic band TiN. In line this, an enhanced recombination resistance charge carriers extended lifetime are observed for TN‐TON (4.47 ns) TO‐TON (4.33 systems via photoluminescence time‐resolved Consequently, demonstrates superior H 2 /NH 3 production at rate ≈1432/646 μmol g −1 h under solar irradiation, it ≈1136/553 These efficiencies ≈20× 3× times higher than bare TiN , respectively, toward production. insights this demonstrate that nitride‐ oxide‐based precursors likely manifest synergistic competitive properties, in resulting
Язык: Английский
Процитировано
4
Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Compositional engineering of Cu/oxide/nitride-rich systems, exhibiting synergistic plasmonic properties and band alignments for multiplex photocatalysis, is described.
Язык: Английский
Процитировано
0
Journal of Energy Chemistry, Год журнала: 2025, Номер 108, С. 47 - 56
Опубликована: Апрель 18, 2025
Язык: Английский
Процитировано
0
Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown
Опубликована: Апрель 21, 2025
This study presents a facile strategy for synthesizing in situ N-doped Fe2O3 from iron nitride to tune its band structure photocatalytic applications. XRD analysis confirms the structural formation α-Fe2O3, while XPS verifies nitrogen incorporation of 8.87% and 5.52% obtained by oxidizing at 450 °C 550 °C, corresponding high-doped low-doped (HD-FO LD-FO) systems. FESEM BET showed that N-doping influenced particle aggregation, surface area, porosity, with bare (FO) exhibiting highest area (43.9 m2/g), followed HD-FO (34.39 m2/g) LD-FO (25.79 m2/g). UV-vis valence XPSs revealed bandgap narrowing 2.80 eV 2.71 (LD-FO) 2.53 (HD-FO), improving visible light absorption. Mott-Schottky plots more negative conduction potentials (-0.46 eV) (-0.54 compared FO (-0.39 eV), indicating enhanced electron transfer properties Photocatalytic RhB degradation under sunlight achieved ∼97%, 90%, 87%, H2 production rates 839.6, 749.4, 656.9 µmol g-1 h-1 LD-FO, HD-FO, FO, respectively. The results highlight efficacy as precursor doping N efficient
Язык: Английский
Процитировано
0