Green Synthesis of Carbon Quantum Dots and Carbon Quantum Dot-Gold Nanoparticles for Applications in Bacterial Imaging and Catalytic Reduction of Aromatic Nitro Compounds

ACS Omega, Год журнала: 2024, Номер 9(22), С. 23573 - 23583

Опубликована: Апрель 24, 2024

This study delves into the green synthesis and multifaceted applications of three types carbon quantum dots (CQDs), namely, CQDs-1, CQDs-2, CQDs-3. These CQDs were innovatively produced through a gentle pyrolysis process from distinct plant-based precursors: genipin with glucose for extracted gardenia seeds whole Advanced analytical techniques, including X-ray photoelectron spectroscopy (XPS) Fourier-transform infrared (FT-IR), employed to detail CQDs' structural surface characteristics, revealing their unique functional groups chemistries. The further explores bioimaging potential, where confocal fluorescence microscopy evidenced swift uptake by

Язык: Английский

---

Catalytic reduction of nitrophenols and dyes by HKUST-1/hydrogel composite

RSC Advances, Год журнала: 2025, Номер 15(9), С. 6974 - 6983

Опубликована: Янв. 1, 2025

The effective removal of nitrophenols from wastewater is crucial due to their high carcinogenic risk. This research presents the development a copper-based metal-organic framework (HKUST-1) integrated into chitosan-graft-poly(acrylic acid) hydrogel. hydrogel composite was evaluated as catalyst for reducing and dyes using sodium borohydride (NaBH4) agent. Various conditions were investigated reduction 4-nitrophenol (4-NP) less harmful 4-aminophenol (4-AP), including dosage, NaBH4 concentration, initial 4-NP temperature, pH. able completely reduce within 25 minutes at dosage 3 g L-1 concentration 300 mM. rate increased with higher temperatures, an Arrhenius activation energy 54.4 kJ mol-1. Common anions found in surface water, such Cl-, NO3 -, SO4 2-, HCO3 had slight impact on 4-NP. When tested real water environments, decreased, but complete conversion still achieved. Additionally, successfully reduced 100% 2-nitrophenol, methyl orange, 69% Congo red. Overall, has shown significant potential various organic pollutants efficiency easy separation through filtration.

Язык: Английский

---

A bifunctional MoS2/SGCN nanocatalyst for the electrochemical detection and degradation of hazardous 4-nitrophenol

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 282, С. 116701 - 116701

Опубликована: Июль 16, 2024

Herein, we reported the dual functions of molybdenum disulfide/sulfur-doped graphitic carbon nitride (MoS

Язык: Английский

---

Immobilization of nano-Cu on ceramic membrane by dopamine assisted flowing synthesis for enhanced catalysis

Separation and Purification Technology, Год журнала: 2023, Номер 326, С. 124781 - 124781

Опубликована: Авг. 9, 2023

Язык: Английский

---

Synergistic effects of Curcuma amada functionalized ZnO nanostructures: bioactivity, catalytic, photocatalytic, and supercapacitor application

Applied Nanoscience, Год журнала: 2024, Номер 14(7), С. 891 - 916

Опубликована: Июнь 4, 2024

Язык: Английский

---

A review of recent advances in green and sustainable technologies for removing 4-nitrophenol from the water and wastewater

Sustainable Chemistry and Pharmacy, Год журнала: 2024, Номер 43, С. 101867 - 101867

Опубликована: Дек. 4, 2024

Язык: Английский

---

Reshape Iron Nanoparticles Using a Zinc Oxide Nanowire Array for High Efficiency and Stable Electrocatalytic Nitrogen Fixation

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 21, 2025

As a type of century-old catalyst, the use iron-based materials runs through Haber–Bosch process and electrochemical synthesis ammonia because its excellent capability, low cost, abundant reserves. How to continuously improve catalytic activity stability for nitrogen fixation has always been goal pursued by scientific researchers. Herein, we develop free-standing i.e., iron nanoparticles with zinc oxide nanowire array support (Fe/ZnO NA), which exhibits high yield ∼54.81 μg h–1 mgcat.–1 Faradaic efficiency (FE) ∼9.56% in 0.5 M potassium hydroxide solution, along good reusability durability. Its electrocatalytic ability is superior that commercial Fe most reported Fe-based catalysts, thus showing great competitiveness. This ZnO NA not only supplies stable homogeneous dispersion but also provides very beneficial synergy their activity. The work renews traditional catalysts significance promoting industrialization synthesis.

Язык: Английский

---

Critical role of copper ions and active hydrogen for fast reduction of 4-nitrophenol using CuS mesh

Chemical Engineering Science, Год журнала: 2025, Номер unknown, С. 121303 - 121303

Опубликована: Фев. 1, 2025

Язык: Английский

---

Facile synthesis of PVA-supported ZnS nano-cottons as recyclable catalyst for the efficient reduction of p-nitrophenol and photodegradation of solochrome dark blue under the sunlight irradiation

Discover Catalysis., Год журнала: 2025, Номер 2(1)

Опубликована: Фев. 13, 2025

Язык: Английский

---

Electrochemical sensing and catalytic water processing using CoFe-PBA: Experimental and DFT insights

Journal of Water Process Engineering, Год журнала: 2025, Номер 71, С. 107301 - 107301

Опубликована: Фев. 22, 2025

Язык: Английский

---