Current trends: Zinc oxide nanoparticles preparation via chemical and green method for the photocatalytic degradation of various organic dyes DOI Creative Commons
Jyoti Gaur, Sanjeev Kumar, Mohinder Pal

и другие.

Hybrid Advances, Год журнала: 2023, Номер 5, С. 100128 - 100128

Опубликована: Дек. 12, 2023

Nanotechnology, which focuses on creating and applying materials at the nanoscale (ranging from 1 to 100 nm), opens-up a realm of possibilities. Nanoparticles, known for their minuscule size exceptional surface area-to-volume ratio, exhibit distinct physical chemical attributes compared bulk materials. Green zinc oxide nanoparticles, among myriad metal-oxide have gained significant attention due broad applicability, showcasing antibacterial, anti-inflammatory, antioxidant, optical properties. This is attributed expansive bandwidth elevated exciton binding energy. In this comprehensive study, we investigate intricacies nanoparticle synthesis, uncovering biological processes that underscore unique features applications, especially in photocatalysis. Various synthesis methods, including sol-gel, hydrothermal, precipitation techniques, are scrutinized efficacy tailoring shape nanoparticles. exploration not only provides insights into mechanical nanoparticles formation but also evaluates potential advancing fields such as antibacterial treatments optoelectronic applications. The novelty work lies meticulous examination diverse methods presenting understanding intricacies. Moreover, study digs photocatalysis, exploring how can revolutionize field with Through exploration, aim unravel shed light limitations various providing roadmap future research development nanotechnology.

Язык: Английский

Molten salts etching strategy construct alloy/MXene heterostructures for efficient ammonia synthesis and energy supply via Zn-nitrite battery DOI

Zhijie Cui,

Pengwei Zhao,

Honghai Wang

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 348, С. 123862 - 123862

Опубликована: Апрель 24, 2024

Язык: Английский

Процитировано

37
Tandem catalysis in electrocatalytic nitrate reduction: Unlocking efficiency and mechanism DOI Creative Commons
Ziyang Wu, Yanhui Song,

Haocheng Guo

и другие.

Interdisciplinary materials, Год журнала: 2024, Номер 3(2), С. 245 - 269

Опубликована: Фев. 28, 2024

Abstract The electrochemical nitrate reduction reaction (NO 3 RR) holds promise for ecofriendly removal. However, the challenge of achieving high selectivity and efficiency in electrocatalyst systems still significantly hampers mechanism understanding large‐scale application. Tandem catalysts, comprising multiple catalytic components working synergistically, offer promising potential improving NO RR. This review highlights recent progress designing tandem catalysts RR, including noble metal‐related system, transition metal electrocatalysts, pulsed electrocatalysis strategies. Specifically, optimization active sites, interface engineering, synergistic effects between catalyst components, various situ technologies, theory simulations are discussed detail. Challenges opportunities development scaling up RR further discussed, such as stability, durability, mechanisms. By outlining possible solutions future design, this aims to open avenues efficient comprehensive insights into mechanisms energy sustainability environmental safety.

Язык: Английский

Процитировано

26
Room-temperature and carbon-negative production of biodiesel via synergy of geminal-atom and photothermal catalysis DOI

Jinshu Huang,

Tengyu Liu, Keping Wang

и другие.

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(4), С. 1607 - 1613

Опубликована: Март 19, 2024

Язык: Английский

Процитировано

24
Phosphorus-doped Ti3C2Tx MXene nanosheets enabling ambient NH3 synthesis with high current densities DOI

Yuchuan Qi,

Xianghua Hou, Ziying He

и другие.

Chemical Communications, Год журнала: 2024, Номер 60(66), С. 8728 - 8731

Опубликована: Янв. 1, 2024

Herein, we show that P-doped Ti

Язык: Английский

Процитировано

21
Recent Progress and Perspectives on Transition Metal-Based Electrocatalysts for Efficient Nitrate Reduction DOI
Jun Zhou,

Sanshuang Gao,

Guangzhi Hu

и другие.

Energy & Fuels, Год журнала: 2024, Номер 38(8), С. 6701 - 6722

Опубликована: Апрель 8, 2024

Electrochemical nitrate reduction is the process of converting into ammonia or nitrogen using electric energy. This saves energy, protects environment, and an important technology for resource recovery water purification. paper examines recent advances in electrochemical research analyzes reaction mechanism path as well influence various factors on through thermodynamic kinetic principles. Second, catalytic performances transition metal electrocatalysts form single metals, alloys, oxides, composites are analyzed detail, which lays foundation rational development new, efficient, stable electrocatalysts. Finally, future directions prospects envisioned.

Язык: Английский

Процитировано

20
Modified Ag-ZnO coated graphene oxide ternary composite for superior photocatalytic degradation of crystal violet dye under visible light irradiation DOI
Mansimran Kaur, Bonamali Pal, Davinder Kaur

и другие.

Diamond and Related Materials, Год журнала: 2024, Номер 143, С. 110935 - 110935

Опубликована: Фев. 22, 2024

Язык: Английский

Процитировано

17
Graphdiyne Enabled Nitrogen Vacancy Formation in Copper Nitride for Efficient Ammonia Synthesis DOI
Zixuan Zhang,

Xueting Feng,

Zedong Zhang

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(21), С. 14898 - 14904

Опубликована: Май 15, 2024

The electrocatalytic reduction of nitrate is promising for sustainable ammonia synthesis but suffers from slow kinetics and multiple competing reactions. Here, we report a catalyst featuring copper nitride (Cu3N) anchored on novel graphdiyne support (termed Cu3N/GDY), which used to produce ammonia. GDY absorbed hydrogen enabled nitrogen (N) vacancy formation in Cu3N the fast reaction (NO3RR). Further, distinct absorption sites formed by N excellent selectivity stability NO3RR. Notably, Cu3N/GDY achieved high yield (YNH3) up 35280 μg h–1 mgcat.–1 Faradaic efficiency (FE) 98.1% using 0.1 M NO3– at −0.9 V versus reversible electrode (RHE). Using electron paramagnetic resonance (EPR) technology situ X-ray fine structure (XAFS) spectroscopy measurement, visualized NO3RR GDY. These findings show promise highlight efficacy as catalyst.

Язык: Английский

Процитировано

17
Effective adsorption and visible light driven enhanced photocatalytic degradation of rhodamine B using ZnO nanoparticles immobilized on graphene oxide nanosheets DOI Creative Commons

Md. Abdulla Sayem,

Md Amran Hossen Suvo, Ishtiaque M. Syed

и другие.

Results in Physics, Год журнала: 2024, Номер 58, С. 107471 - 107471

Опубликована: Фев. 12, 2024

In this study, graphene oxide (GO), ZnO nanoparticles (NPs) and GO based nanocomposites (GO-ZnO) have been successfully synthesized by modified Hummer's method, chemical co-precipitation method ultrasonication respectively. Powder X-ray diffraction (PXRD), transmission electron microscopy (TEM) Fourier transform infrared (FTIR) spectroscopy were employed to study the crystallographic structure, phase, surface micro-morphology different functional groups in prepared catalysts. The optical band gap of pristine NPs was found UV region (3.2 eV), whereas immobilized on nanosheets possesses it visible wavelength (2.67 eV). GO-ZnO catalysts demonstrate excellent degradation efficiency (97.7 %) within just 85 min due its effective adsorption light driven photocatalytic activity rhodamine B (RhB) dye. capacity ∼ 24 times higher with second order kinetic rate constant as low 0.0014 ∙ g/mg 9 faster when compared unmodified catalyst. Effect catalyst dosages RhB also conducted. scavenger test firmly evidenced that super radicals (•O2–) play lead role dye process nanocomposites. Reusability studies more than 91 % up 4 back-to-back cycles along retaining crystal structure. These findings suggest viable application for wastewater.

Язык: Английский

Процитировано

16
Electrochemical conversion of biomass-derived aldehydes into fine chemicals and hydrogen: A review DOI
Jayaraman Theerthagiri, K. Karuppasamy,

Juhyeon Park

и другие.

Environmental Chemistry Letters, Год журнала: 2022, Номер 21(3), С. 1555 - 1583

Опубликована: Ноя. 23, 2022

Язык: Английский

Процитировано

57
Enhancement of Nitrate‐to‐Ammonia on Amorphous CeOx‐Modified Cu via Tuning of Active Hydrogen Supply DOI
Yufeng Li, Chaochen Wang,

Lekuan Yang

и другие.

Advanced Energy Materials, Год журнала: 2023, Номер 14(7)

Опубликована: Дек. 22, 2023

Abstract The electrochemical nitrate reduction reaction (NO 3 RR) is an environment‐friendly and promising alternative to the conventional Haber–Bosch ammonia synthesis process, which a complex process of proton‐coupled electron transfer. Hereon, amorphous CeO x support introduced construct Cu/a‐CeO heterostructure prepared provide sufficient *H synergistically catalyze NO RR. achieves maximum yield 1.52 mmol h −1 mg cat . In flow cell, NH reaches 17.93 at 1 A cm −2 , exceeds most state‐of‐the‐art catalysts. situ X‐ray diffraction (XRD) in Raman observe that catalyst undergoes structural reconfiguration under operating conditions, thus confirming Cu 2 O not true active center catalytic process. Furthermore, characterizations density functional theory (DFT) calculations demonstrate modulates electronic structure overcomes higher potential barrier required for decomposition water on Cu, greatly facilitates hydrolysis provides H‐coverage rate hydrogenation − realizing dynamic equilibrium between production consumption hydrogen. This component design strategy centered opens up new pathway

Язык: Английский

Процитировано

40