Gold Nanoparticles Adsorbed on Graphene as Nanozymes for the Efficient Elimination of Dye Pollutants DOI
Qin Li, Deshuai Yu,

Chaoyu Fan

et al.

ACS Applied Nano Materials, Journal Year: 2021, Volume and Issue: 5(1), P. 94 - 100

Published: Dec. 22, 2021

Over the past several decades, design and development of nanomaterials with intrinsic enzyme-mimicking activities (nanozymes) have attracted increasing attention. Herein, we present a simple strategy for construction graphene–gold nanoparticle (Graphene/Au-NPs) nanozymes via one-step hydrothermal reaction, which can act as highly efficient dye scavenger synergetic effect adsorption degradation. The as-prepared nanocomposites overcome drawbacks single-component Au-NPs, such ease aggregation cannot capture substrates effectively. In our catalytic system, Graphene/Au-NPs readily adsorb organic dyes onto their surfaces, catalyze H2O2 to generate •OH radicals, then exhibit outstanding removal performance toward different dyes. Their mechanism is analogous that natural enzymes, in specific high efficiency depends mainly on capacity keep substrate close active site enzyme. Collectively, work may pave way apply multifunctional research areas, environmental treatment, sensing, biotechnology.

Language: Английский

Insights on catalytic mechanism of CeO2 as multiple nanozymes DOI Open Access
Yuanyuan Ma, Zhimin Tian, Wenfang Zhai

et al.

Nano Research, Journal Year: 2022, Volume and Issue: 15(12), P. 10328 - 10342

Published: July 11, 2022

Language: Английский

Citations

130
Synergistic Lewis and Brønsted Acid Sites Promote OH* Formation and Enhance Formate Selectivity: Towards High‐efficiency Glycerol Valorization DOI
Junqing Ma,

Xunlu Wang,

Junnan Song

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 15, 2024

As a sustainable valorization route, electrochemical glycerol oxidation reaction (GOR) involves in formation of key OH* and selective adsorption/cleavage C-C(O) intermediates with multi-step electron transfer, thus suffering from high potential poor formate selectivity for most non-noble-metal-based electrocatalysts. So, it remains challenging to understand the structure-property relationship as well construct synergistic sites realize high-activity high-selectivity GOR. Herein, we successfully achieve dual-high performance low potentials superior GOR by forming Lewis Brønsted acid Ni-alloyed Co-based spinel. The optimized NiCo oxide solid-acid electrocatalyst exhibits (1.219 V@10 mA/cm

Language: Английский

Citations

22
B, N Codoped Defective Reduced Graphene Oxide as a Highly Efficient Frustrated Lewis Pairs Catalyst for the Selective Hydrogenation of α,β-Unsaturated Aldehydes to Unsaturated Alcohols DOI
Linhao Zhong,

Xiaoqing Liao,

Huaquan Huang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

The development of all-solid-state frustrated Lewis pairs (FLPs) metal-free hydrogenation catalysts with excellent activity and stability remains a significant challenge. In this work, B, N codoped FLPs (De-rGO-NxBy) were prepared by the strategy fabricating carbon defects heteroatom doping on surface reduced graphene oxide applied in selective α,β-unsaturated aldehydes to unsaturated alcohols. It was found that electron-rich pyridine-N (Lewis base) adjacent electron-deficient B–N acid) sites could be constructed using dicyandiamide metaboric acid as B sources, thus forming sites. More importantly, facilitate formation pyridinic-N/B–N sites, thereby improving catalytic selectivity Furthermore, situ DRIFTS DFT calculations show can efficiently activate C═O H2 molecules only 0.53 eV dissociation energy H–H bond. Also, catalyst presents performance transfer reactions cyclohexanol its derivatives hydrogen sources. This study provides new ideas for design preparation promotes green synthesis

Language: Английский

Citations

2
Bimetallic Metal–Organic Framework Fe/Co-MIL-88(NH2) Exhibiting High Peroxidase-like Activity and Its Application in Detection of Extracellular Vesicles DOI

Qiaoshi Jiang,

Yuchen Xiao, Anh N. Hong

et al.

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(37), P. 41800 - 41808

Published: Sept. 9, 2022

Metal-organic frameworks (MOFs) have many attractive features, including tunable composition, rigid structure, controllable pore size, and large specific surface area, thus are highly applicable in molecular analysis. Depending on the MOF a high number of unsaturated metal sites can be exposed to catalyze chemical reactions. In present work, we report that using both Co(II) Fe(III) prepare MIL-88(NH2) MOF, produce bimetallic conversion 3,3',5,5″-tetramethylbenzidine (TMB) color product through reaction with H2O2 at higher rate than monometallic Fe-MIL-88(NH2). The Michaelis constants (Km) catalytic for TMB 3-5 times smaller, (kcat) 5-10 those horseradish peroxidase (HRP), supporting ultrahigh peroxidase-like activity. These values also much more superior HRP-mimicking MOFs reported previously. Interestingly, coupled glucose oxidase (GOx) trigger cascade enzymatic sensitive detection extracellular vesicles (EVs), family important biomarkers. Through conjugation aptamer recognizes marker protein EV surface, help isolate EVs from biological matrices, which subsequently labeled by GOx via antibody recognition. between enables concentration as low 7.8 × 104 particles/mL. assay applied monitor secretion cultured cells successfully detect different quantities sera samples collected cancer patients healthy controls. Overall, prove Fe/Co-MIL-88(NH2) its activity biocompatibility, is valuable tool deployable clinical assays facilitate disease diagnosis prognosis.

Language: Английский

Citations

46
ZIF-90 with biomimetic Zn–N coordination structures as an effective nanozyme to mimic natural hydrolase DOI

Chaoyu Fan,

Yonghua Tang, Hao Wang

et al.

Nanoscale, Journal Year: 2022, Volume and Issue: 14(22), P. 7985 - 7990

Published: Jan. 1, 2022

Inspired by the structures of enzymes, a fast and robust strategy for generating ZIF-90 metallo-nanozymes is presented.

Language: Английский

Citations

45
Co‐based Nanozymatic Profiling: Advances Spanning Chemistry, Biomedical, and Environmental Sciences DOI

Jingqi Li,

Xinda Cai,

Peng Jiang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(8)

Published: Sept. 19, 2023

Nanozymes, next-generation enzyme-mimicking nanomaterials, have entered an era of rational design; among them, Co-based nanozymes emerged as captivating players over times. been developed and garnered significant attention the past five years. Their extraordinary properties, including regulatable enzymatic activity, stability, multifunctionality stemming from magnetic photothermal conversion effects, cavitation relaxation efficiency, made a rising star. This review presents first comprehensive profiling in chemistry, biology, environmental sciences. The begins by scrutinizing various synthetic methods employed for nanozyme fabrication, such template sol-gel methods, highlighting their distinctive merits chemical standpoint. Furthermore, detailed exploration wide-ranging applications biosensing biomedical therapeutics, well contributions to monitoring remediation is provided. Notably, drawing inspiration state-of-the-art techniques omics, analysis undertaken, employing analogous statistical methodologies provide valuable guidance. To conclude, outlook on challenges prospects presented, spanning microscopic physicochemical mechanisms macroscopic clinical translational applications.

Language: Английский

Citations

41
Interfacial engineering-induced Janus heterostructures with enhanced electronic regulation for efficient oxygen electrocatalysis in rechargeable Zn-air batteries DOI
Jie Zhang, Xinran Dong, Gang Wang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 342, P. 123459 - 123459

Published: Nov. 1, 2023

Language: Английский

Citations

38
Recent progress of nanozymes with different spatial dimensions for bioanalysis DOI

Mengying An,

Mengqi He,

Caishi Lin

et al.

Materials Today Nano, Journal Year: 2023, Volume and Issue: 22, P. 100330 - 100330

Published: March 31, 2023

Language: Английский

Citations

34
Defective nickel sulfide hierarchical structures for efficient electrochemical conversion of plastic waste to value-added chemicals and hydrogen fuel DOI
Zhijie Chen, Wei Wei, Yansong Shen

et al.

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(15), P. 5979 - 5988

Published: Jan. 1, 2023

Hierarchical defective nickel sulfide catalysts enable efficient electro-upcycling of plastic waste to value-added chemicals and hydrogen fuel.

Language: Английский

Citations

28
Robust Zn(II)-Organic Framework for High Catalytic Activity on Cycloaddition of CO2 with Epoxides and Reversible Iodine Uptake DOI
Chong Li, Hongtai Chen, Liming Fan

et al.

Crystal Growth & Design, Journal Year: 2023, Volume and Issue: 23(7), P. 4953 - 4960

Published: June 2, 2023

Increasingly serious natural disasters caused by excessive CO2 emission have given birth to a series of carbon-neutral technologies, among which the chemical transformation catalyzed metal–organic framework (MOF)-based catalysts has become focus. Herein, self-assembly zinc(II) cation and designed flexible multifunctional ligand 1,3-di(5,6-dicarboxylbenzimidazol-1-ylmethyl)benzene (H4DDBB) generated highly robust microporous material {[Zn(H2DDBB)]·2NMP}n (NUC-69) with 1D rectangle open channels (10.0 × 7.6 Å2). Because inner wall voids is densely functionalized free −COOH groups, Nimidazole atoms, tetra-coordinated metal sites, activated NUC-69a exhibits high catalytic performance on cycloaddition reactions epoxides under mild conditions turnover number frequency. In addition, can be used as an efficient iodine adsorbent maximum adsorption capacity 0.94 g/g (4.26 I2 molecules per formulation unit) 1.28 (5.81 in hexane solution volatilization phase. Hence, this work provides productive insight into design MOFs enhancing types active makes developed materials broader application prospect.

Language: Английский

Citations

24