Rationally Designing Efficient Biomass Carbon Electrocatalysts for H2O2 Synthesis and Near-Neutral Zn–Air Batteries with Preliminary Machine Learning Guidance DOI
Jiawei He,

Zijun Shen,

Shengchun Hu

и другие.

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

Опубликована: Апрель 8, 2025

Biomass-based carbon materials are considered promising metal-free catalysts for the 2e- oxygen reduction reaction (ORR) to synthesize H2O2 and act as air electrodes in Zn-air batteries. However, optimization of catalyst structure is a complex process due diversity biomass precursors synthesis parameters. Machine learning, new artificial intelligence technology, has recently been used various fields owing its ability rapidly analyze large amounts data guide material synthesis. Consequently, we constructed machine learning model based on previously reported experimental guided fabrication boron-doped ORR. The achieved catalytic performance exceeded most ORR terms selectivity (90-95% broad potentials 0.30-0.68 V vs reversible hydrogen electrode), stability (maintaining over 90% 12 h), yield (3450 mmol gcatalyst-1 h-1), Faraday efficiency (over 90%). We applied batteries showed high capacity (2856 mAh g-1) twice that traditional commercial metal catalysts. Therefore, this study proposed an effective biomass-based field electrocatalysis.

Язык: Английский

Atmosphere Engineering of Metal-Free Te/C3N4 p-n Heterojunction for Nearly 100% Photocatalytic Converting CO2 to CO DOI Creative Commons

Huange Liao,

Kai Huang, Weidong Hou

и другие.

Advanced Powder Materials, Год журнала: 2024, Номер unknown, С. 100243 - 100243

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

26
Carbon quantum dot-mediated binary metal–organic framework nanosheets for efficient oxygen evolution at ampere-level current densities in proton exchange membrane electrolyzers DOI

Qianjia Ni,

Shi‐Yuan Zhang, Kang Wang

и другие.

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(45), С. 31253 - 31261

Опубликована: Янв. 1, 2024

The widespread utilization of noble metal-based catalysts for the oxygen evolution reaction (OER) is hindered by their rarity and substantial expense, posing significant challenges large-scale applications.

Язык: Английский

Процитировано

23
Hydrophobic carbon quantum dots with Lewis-Basic nitrogen sites for electrocatalyst CO2 reduction to CH4 DOI
Shuai Fu, Bijun Tang, Zeming Wang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157207 - 157207

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

18
Vacancy‐Activated B‐Doping for Efficient 2e‐ Oxygen Reduction through Suppressing H2O2 Decomposition at High Overpotential DOI Open Access

Wangyang Cui,

Zhiyuan Zhen, Yuanyuan Sun

и другие.

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Abstract The production of hydrogen peroxide (H 2 O ) through two‐electron oxygen reduction reaction (2e − ORR) has emerged as a more environmentally friendly alternative to the traditional anthraquinone method. Although oxidized carbon catalysts have intensive developed due their high selectivity and activity, yield conversion rate H under overpotential still limited. produced was rapidly consumed by increased intensity reduction, which could ascribe decomposition radicals voltage in catalyst. To overcome this issue, B doped been catalyze 2e ORR with efficient suppressing at potential. Thus, thermal reducing containing groups (OCGs) on graphite construct defects vacancies, situ convert B−C x subunits edge graphene sheets. introduction effectively prevented *O−O bond provided suitable adsorption capacity for *OOH, achieving excellent across wide range. Finally, remarkable 7.91 mmol cm −2 h −1 delivered an industrial current density 600 mA , provide “green” pathway scale‐upable synthesis .

Язык: Английский

Процитировано

4
Unlocking the potential of green-engineered carbon quantum dots for sustainable packaging biomedical applications and water purification DOI Creative Commons
Yasaman Esmaeili, Farzad Toiserkani, Zeinab Qazanfarzadeh

и другие.

Advances in Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 103414 - 103414

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

4
Rapid synthesis of carbon quantum dot-integrated metal–organic framework nanosheets via electron beam irradiation for selective 5-hydroxymethylfurfural electrooxidation DOI Creative Commons

Qianjia Ni,

Mingwan Zhang,

Bijun Tang

и другие.

Advanced Powder Materials, Год журнала: 2025, Номер unknown, С. 100267 - 100267

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

4
Tailoring Electronic and Morphology Features of Iron‐Doped Ni2P Nanoflowers for Enhanced Ammonia Electrosynthesis in Solid Electrolyte Reactors DOI Open Access
Qi Zhang,

Congcong Ni,

Ning Deng

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Electrochemical nitrate (NO 3 − ) reduction to ammonia (NH presents a promising route for both wastewater treatment and generation but still suffers from sluggish catalytic activity, insufficient mass transfer, the reliance on high‐concentration supporting electrolytes. This work reports an innovative efficient electrosynthesis reactor by integrating self‐assembled iron‐doped Ni 2 P (Fe‐Ni P/NF) nanoflower cathode with solid‐electrolyte (SE). The SE design eliminates need electrolytes, providing highly ion‐conducting pathway enabling direct production of NH NO . Through tailoring electronic surface characteristics Fe‐Ni P/NF, this achieves complete reduction, 96.7% selectivity, 81.8% faradaic efficiency concentration 100 m at current density mA −2 Density functional theory (DFT) calculations reveal that phosphating Fe doping synergistically enhance adsorption increase availability active hydrogen, thus favoring low energy barrier 0.695 eV. Additionally, superhydrophilicity P/NF catalyst promotes transfer facilitating electrolyte access ensuring rapid gas bubble release. study provides sustainable scalable method converting ‐laden into valuable products.

Язык: Английский

Процитировано

2
Carbon quantum dots: Classification-structure-property-application relationship for biomedical and environment remediation DOI
Akash S. Rasal,

T.M. Subrahmanya,

Shamsa Kizhepat

и другие.

Coordination Chemistry Reviews, Год журнала: 2025, Номер 533, С. 216510 - 216510

Опубликована: Фев. 21, 2025

Язык: Английский

Процитировано

2
Fluorescence Quenching of Graphene Quantum Dots from Orange Peel for Methyl Orange Detection DOI Creative Commons
Weitao Li, Yang Liu,

Xinglong Pang

и другие.

Nanomaterials, Год журнала: 2025, Номер 15(5), С. 376 - 376

Опубликована: Фев. 28, 2025

Methyl orange (MO) is an organic synthetic dye widely used in laboratory and industrial applications. In settings, it serves as acid-base indicator due to its distinct color change both acidic alkaline environments. Industrially, primarily utilized the textile industry for ultraviolet (UV) absorption properties. However, discharge leakage of methyl into environment can cause severe ecological damage pose potential carcinogenic teratogenic risks human health. Therefore, detecting quantifying concentration various matrices crucial. This study reports synthesis graphene quantum dots (GQDs) from peel a precursor, using ethanol dimethylformamide (DMF) solvents. Cyan (c-GQDs) yellow (y-GQDs) were synthesized through bottom-up hydrothermal method. The difference attributed redshift caused by varying ratio pyridine nitrogen pyrrole nitrogen. These GQDs exhibited notable optical properties, with c-GQDs emitting cyan fluorescence y-GQDs under UV light. To investigate quenching effects, nine commonly dyes tested, all found quench y-GQDs, having most significant effect. peel-derived presence poor dispersion DMF solution. Additionally, possess high specific surface area, abundant functional groups, excellent electronic conductivity, which contribute their effective performance. average thickness (the vertical dimension substrate upwards) was 3.51 nm, confirming graphene-like structure. They emitted within wavelength range 450-530 nm. Notably, linear correlation between intensity (regression coefficient = 0.9954), indicating sensing materials pollutant detection.

Язык: Английский

Процитировано

2
Verifying the Unique Charge Migration Pathway in Polymeric Homojunctions for Artificial Photosynthesis of Hydrogen Peroxide DOI Creative Commons
Qiang Cheng, Jingping Li,

Yuxin Huang

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Artificial photosynthesis for producing high-value hydrogen peroxide (H2O2) using carbon nitride-based systems holds immense potential. However, understanding the charge transfer dynamics in homojunction photocatalysts remains a significant challenge owing to limitations of current characterization techniques. Here, polymeric C3N5/C3N4 (CNHJ) is employed as model system probe interfacial electron transfer. Bimetallic cocatalysts serve sensitive probes, enabling situ tracking S-scheme between C3N5 and C3N4 via X-ray photoelectron spectroscopy. Leveraging unique advantages this S-scheme, CNHJ demonstrates substantially enhanced performance two-electron oxygen reduction reaction, achieving an impressive H2O2 production rate 8.78 mmol g-1 h-1 under visible light irradiation. Furthermore, robust continuous-flow setups, natural sunlight, photocatalytic disinfection tests, highlighting its practical This approach offers new insights into dynamic mechanisms paves way advancing artificial technologies.

Язык: Английский

Процитировано

2