ChemCatChem
·
2022
·Vol. 14
·期 15
·e202101954
·
IF 5.497
Lulu Bai,Hao Sun,Qiang Wu,Weifeng Yao
Graphical Photocatalytic H 2 O 2 evolution : A new P-doped carbon nitride loaded with ruthenium single atoms and clusters was successfully synthesized by photoreduction method. It has exhibited an excellent photocatalytic activity toward H 2 O 2 evolution. This study surmounts people‘s understanding that precious metal loading is not conducive to H 2 O 2 selectivity and provides ideas for the design of extremely active and stable single-atom and clusters. Photocatalytic H 2 O 2 evolution via two-electron oxygen reduction is a promising path for renewable and on-the-spot H 2 O 2 production compared with the traditional anthraquinone method. However, the efficiency of photocatalytic production of H 2 O 2 is usually very low. Herein, P-doped carbon nitride loaded with ruthenium single atoms and clusters (Ru atom /P-CN) is reported as an efficient photocatalyst for H 2 O 2 production. The yield of H 2 O 2 over Ru atom /P-CN (385.8 mmol g −1 h −1 ) is about 4.3 times higher than that of P-CN (88.9 mmol g −1 h −1 ) and 3.6 times higher than that of ruthenium nanoparticles loaded P-CN (105.9 mmol g −1 h −1 ). Further mechanistic study indicates that the presence of Ru in the form of single atoms and clusters not only improves the separation efficiency of photogenerated carriers and inhibits the recombination of photogenerated electron-hole pairs, but also increases the reactive sites of this catalytic system. This study breaks through people‘s understanding that precious metal loading is not conducive to H 2 O 2 selectivity and provides a new way to prepare low-metal loading, high-activity photocatalysts for H 2 O 2 production.
研究领域:
材料科学
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环境科学
·
化学工程
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yi-Lin Zhao,Lu-Hui Li,Li-Na Zhu,Xin Wang
Hydrogen peroxide (H₂O₂) is a crucial oxidative stress biomarker associated with various diseases, especially tumor progression and inflammatory disorders. Accurate monitoring of H₂O₂ is essential for understanding the microenvironmental dynamics involved in disease development. However, traditional metal oxide-based electrochemical sensors often suffer from low catalytic efficiency and nanoparticle aggregation. Herein, we report a high-performance, binder-free H₂O₂ sensor based on a rationally engineered Au–CoMn₂O₄/Ni foam heterostructure. This integrated architecture leverages the conductive 3D Ni foam and an interface-mediated interaction-enhanced charge transfer interface to significantly enhance sensing performance. The resulting sensor exhibits two sensitivities, 3100.04 μA·mM⁻¹·cm⁻² (2–666 μM) and 821.41 μA·mM⁻¹·cm⁻² (1.066–22.166 mM), an ultralow detection limit of 0.036 μM, and a practical linear detection range spanning 2 μM–22.166 mM (R² = 0.99). It also demonstrates excellent selectivity, long-term stability (<3% signal decay over 30 days), and reproducibility (RSD ≈ 2.5%). Notably, the sensor enables real-time electrochemical monitoring of H₂O₂ released by A549 lung cancer cells under phorbol 12-myristate 13-acetate (PMA) stimulation, highlighting its potential as a platform for advanced electrochemical sensing. Importantly, the sensing mechanism can be well interpreted via interfacial structure analysis and electrochemical validation, without requiring theoretical simulations.
研究领域:
生物医学工程
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肿瘤学
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电化学分析
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生物传感器
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氧化应激
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纳米材料
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转化医学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Ran Tao,Feifei Mu,Jérome Chauvin,Serge Cosnier,Xue-Ji Zhang,Dan Shan
Rational design of highly dispersed CeO 2 nanozymes with abundant oxygen vacancies is critical for achieving efficient and sensitive H 2 O 2 detection. Herein, we report a deep eutectic solvent (DES)-guided engineering strategy to construct an N-doped carbon (NC) framework integrated with mussel-inspired, uniformly dispersed CeO 2 nanoparticles. The DES acts both as a green C/N source and a self-templating medium, regulating heteroatom distribution and graphitization degree to yield a conductive carbon scaffold. Dopamine undergoes oxidative self-polymerization under mild alkaline conditions, and its catechol–amine functionalities strongly chelate Ce 3+ ions, directing homogeneous nucleation and suppressing nanoparticle aggregation. This molecularly engineered architecture produces an oxygen-vacancy-rich interface enriched with redox-active Ce 3+ /Ce 4+ sites, enabling rapid electron transfer and accelerated H 2 O 2 redox kinetics. The optimized CeO 2 /NC electrode delivers a diffusion-controlled amperometric response with dual linear ranges (0.05–60 and 60–300 μM), a low detection limit of 0.036 μM, and sensitivities of 94.8 and 49.3 mA M -1 cm -2 , respectively, surpassing most reported CeO 2 -based sensors. Furthermore, the sensor exhibits excellent selectivity and retains 89 % of its initial response after prolonged operation. This work provides a scalable, eco-friendly pathway for constructing bioinspired, oxygen-vacancy-rich nanozymes, offering broad applicability in advanced electrocatalytic sensing platforms.
研究领域:
材料科学
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电化学
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纳米技术
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传感器与生物传感器
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环境化学
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产品关联
DOI
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Huadan Zhang,Congcong Sun,Kailin Li,Xianliang Luo,Zebin Guo,Song Miao,Baodong Zheng
Fucoidan, a marine-derived sulfated polysaccharide, possesses a diverse range of bioactive properties. This study aimed to evaluate the physicochemical characteristics and anti-inflammatory activity of Laminaria japonica fucoidan (LJF) and degradation fractions (DLJF-Ts) obtained through ultrasonic-assisted H 2 O 2 /Vitamin C (VC) treatment (1, 3, and 6 h). The molecular weights of LJF, DLJF-1, DLJF-3, and DLJF-6 were 225, 101, 45, and 31 kDa, respectively. The fucose was the major monosaccharide, and structural analysis demonstrated that the main functional groups were unchanged, while their sheets changed from larger to smaller. Meanwhile, the DLJF-3 showed the superior effects of in vitro antioxidant and anti-inflammatory. Furthermore, after 48 h of colitis mice fecal fermentation, the DLJF-3 was metabolized by gut microbiota, leading to a marked elevation in short-chain fatty acids. The content of Bacteroides increased and the Desulfovibrio reduced significantly. Overall, the obtained results revealed that DLJF-3, as the anti-inflammatory agent, could be used for the development of functional foods and healthcare products.
研究领域:
海洋生物技术
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食品科学
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药理学
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免疫学
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微生物学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Qiuying Wang,Zhiyuan Sang,Wei Liu,Zhenxin Li,Jun Li,Jiahuan Nie,Qichen Wang,De'an Yang,Feng Hou,Ji Liang
Industrial-level hydrogen peroxide (H 2 O 2 ) electrosynthesis is a promising alternative for the energy-intensive anthraquinone process. However, during repeated H 2 O 2 synthesis under harsh electrochemical conditions, active species could be leached away, undergo compositional segregation, or suffer from reconstruction, resulting in a loss in catalytic activity and efficiency. Besides, typical powder-form catalysts inevitably limit their performance enhancement, owing to the large interface resistance and peeling-off of powder catalysts from electrodes. Addressing these, a fine nickel particle catalyst that is with high-density defects and embedded in thin carbon substrates, via a rapid ultraviolet laser treatment, is reported. The high-density defects (i.e., twin boundaries, vacancies, and dislocations) in the Ni particles induce subtle and strong strain, which optimizes electrocatalytic activity and prevents catalyst deactivation effectively. By fabricating the catalyst into a free-standing form, the electronic conductivity and durability of the catalytic electrode can be significantly improved, therefore achieving stable H 2 O 2 production at an industrial-level current density of 250 mA cm −2 over 100 h with a Faradaic Efficiency of over 90% and a high yield of 4.27 mmol cm −2 h −1 . These results provide a promising pathway for the industrial and large-scale H 2 O 2 electrosynthesis, and highlight the potential application of electro-synthesized H 2 O 2 , such as rapid dye degradation.
研究领域:
材料科学
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电化学工程
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催化化学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Shengjia Ma,Bingtao Dong,Yuxin Zheng,Shuai Tang,Tao Zhang,Yaping Zhao
This work elucidated the dual-substrate activation mechanism of a Fenton-like system, enabled by the upcycling of plastics into a highly efficient catalyst. A synergistic pyrolysis strategy was employed to upcycle polyethylene microplastics into nitrogen-doped carbon while simultaneously constructing Fe clusters and WS 2 co-catalyst (WS 2 /Fe-N-C). In the H 2 O 2 activation system, WS 2 /Fe-N-C achieved a remarkable rate constant of 0.949 min −1 toward bisphenol A, which was 52 times higher than that of Fe-N-C, outperforming previously reported representative co-catalyst systems and Fe-based carbon catalysts. Correlation analysis, electrochemical tests and theoretical calculations demonstrated that Fe sites primarily activated H 2 O 2 to generate •OH, while WS 2 adsorbed bisphenol A and facilitated a non-radical electron transfer pathway, enabling dual-substrate synergistic catalysis for highly efficient pollutant removal. This work provides a feasible strategy for plastic upcycling and offers innovative insights into the synergy between metal centers and cocatalysts, paving the way for the rational design of high-performance catalysts.
研究领域:
环境科学
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催化化学
·
材料科学
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产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Hang Ao,Jinshan Xiong,Wencheng Xiao,Wenrui Hu,Jie Wu,Huangxian Ju
Owing to the continuous mutations of the coronavirus, the sensitive and accurate detection of the SARS-CoV-2 nucleocapsid protein is still necessary in clinical diagnosis. Aim to the challenge of sensitivity in chemiluminescence (CL) imaging detection and the need for high-throughput clinical screening, this work used imidazole (Im) as an enhancer for hemin-DNA/luminol/H 2 O 2 CL system to propose a CL imaging method for SARS-CoV-2 nucleocapsid protein detection. In this system Im could reduce the hemin-DNA catalyzed oxidation energy of luminol by H 2 O 2 to promote the CL emission through the accelerated breaking of O-O bond of dianionic cyclic peroxide. The enhancement mechanism was demonstrated with theoretical calculations and several characterization techniques. By combining the proximity-induced initiator release with immunological recognition, an initiator-triggered DNA nanomachine was designed to achieve the release of abundant primers for activating hemin-DNA switch. This signal amplification strategy led to strong CL emission for highly sensitive imaging detection of the target. The Im-enhanced hemin-DNA/luminol/H 2 O 2 CL imaging assay exhibited a linear detection range over 4 orders of magnitude with a detection limit down to 2.75 pg/mL for SARS-CoV-2 nucleocapsid protein, exhibiting promising potential of both Im sensitization and the proposed DNA nanomachine to improve the sensitivity of high-throughput CL biosensing for the early diagnosis and clinical screening of the coronavirus and other diseases.
研究领域:
生物分析化学
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生物传感器
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临床诊断
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病毒学
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纳米生物技术
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Qing-Shuai Zhang,Yu-Le Wang,Li Yue,Yu-Dong Shan,Song-Hai Wu,Yong Liu,Xu Han
Although selective oxidation of benzene to phenol (SOBP) by H2O2 is an important chemical process, overoxidation of benzene by the produced nonselective •OH during the activation of H2O2 inevitably reduces the oxidation selectivity. We, therefore, attempt to mediate the oxidation selectively by using electrophilic KHCO3 in the oxidation system. In this study, Mo–Cu/NC has been successfully synthesized via ball-milling bimetallic Mo–Cu and N-doped carbon, which exhibits high reactivity in SOBP by H2O2 and KHCO3 with a desirable phenol yield of 25.1% and selectivity of 100%. A series of characterizations and DFT calculations reveal that the reaction between H2O2 and KHCO3 produces HCO4–, which is then moderately activated on Mo1Cu2/NC via the nonradical pathway with the formation of Mo-(η2-O2) peroxo. Meanwhile, Ov at Mo1Cu2/NC facilitates the adsorption of benzene, which is then selectively oxidized by Mo-(η2-O2) peroxo to phenol via the oxygen atom transfer pathway. This study provides new insights on the importance of Mo-(η2-O2) peroxo mediated by H2O2–KHCO3 in selective oxidation of aromatic C–H bond via the nonradical pathway.
研究领域:
化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Lihong Tan,Xinhe Wu,Jiachao Xu,Mahmoud Sayed,Guohong Wang
The construction of crystalline/amorphous g-C 3 N 4 homojunctions presents a versatile strategy to obtain all-organic homojunction photocatalysts with better interface matching and lower interface charge carrier movement resistance for optimized photocatalytic activity. However, the process entails a complex multi-step workup, which compromises its feasibility. To overcome this challenge, this work provided an innovative Na 2 CO 3 -induced crystallinity modulation strategy to construct a Na-doped crystalline/amorphous g-C 3 N 4 S-scheme homojunction photocatalyst in a single step. The approach involves the initial pre-assembling of melamine and cyanuric acid molecules, and subsequent introduction of Na 2 CO 3 before the calcination. Na 2 CO 3 plays key roles to induce in-situ crystallinity modulation during the calcination and as a source for Na-doping. The prepared g-C 3 N 4 S-scheme homojunction photocatalyst demonstrated a prominent H 2 O 2 -production rate of 444.6 μmol·L –1 ·h –1 , which is 6.1-fold higher than that of bulk g-C 3 N 4 . The enhanced activity was attributed to the synergistic effect of charge carrier separation induced by the S-scheme homojunction system, and the optimized interfacial H 2 O 2 generation kinetics. The latter was fostered by the Na-doping. This study provides an innovative approach for the one-step construction of g-C 3 N 4 S-scheme homojunction and its integration in photocatalytic applications.
研究领域:
材料科学
·
光催化
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无机化学
·
能量转换
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环境科学
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产品关联
DOI
高影响因子
Chem
·
2019
·
IF 18.205
Rongan Shen,Wenxing Chen,Qing Peng,Siqi Lu,Lirong Zheng,Xing Cao,Yu Wang,Wei Zhu,Juntao Zhang,Zhongbin Zhuang,Chen Chen,Dingsheng Wang,Yadong Li
Summary The electrochemical direct synthesis of hydrogen peroxide (H 2 O 2 ) is significant but still challenging because of the lack of highly selective and active catalysts. Here, we report the synthesis of hollow nanospheres constructed by atomically dispersing platinum in amorphous CuS x support (h-Pt 1 -CuS x ) with a high concentration of single atomic Pt sites (24.8 at%), and this catalyst can consistently reduce O 2 into H 2 O 2 with selectivity of 92%–96% over a wide potential range of 0.05–0.7 V versus RHE in HClO 4 electrolyte. Scanning transmission electron microscopy and X-ray absorption fine structure spectroscopy confirmed the atomically isolated form of Pt with a low valance of +0.75. An electrochemical device that can synthesize H 2 O 2 directly from H 2 and O 2 is fabricated with H 2 O 2 productivity as high as 546 ± 30 mol kg cat − 1 h −1 . The well-defined and high-concentration single atomic Pt sites result in ultrahigh productivity of H 2 O 2 .
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Jianghong Ouyang,Ziwei Hang,Qichao Chen,Yan Qing,Yanmei Zheng,Zupeng Chen
Photocatalytic hydrogen peroxide (H 2 O 2 ) production presents a sustainable alternative to the energy-intensive anthraquinone process. However, its efficiency is limited by rapid charge recombination, and the need for sacrificial agents poses challenges for practical deployment. Herein, we develop an S-scheme cadmium sulfide/graphite phase carbon nitride (CdS/CN) heterojunction for H 2 O 2 photosynthesis coupled with glycerol (GLY) oxidation. The optimized CdS/CN demonstrates enhanced charge separation due to interfacial band bending and internal electric fields, achieving a 10.75-fold higher H 2 O 2 yield (3.01 mM) than pristine CN (0.28 mM). Moreover, GLY serves as a dual mediator that enables electron-proton synergy within the photocatalytic system, by acting as both a hole scavenger and a proton donor, effectively increasing H 2 O 2 production while simultaneously undergoing selective oxidation to yield high-value C3 oxidation derivatives such as dihydroxyacetone (DHA) and glyceraldehyde (GLAD), with >99% selectivity. Mechanism studies reveal that the photogenerated electrons drive two-electron O 2 reduction to H 2 O 2 while holes promote GLY oxidation. This electron-proton synergistic coupling system enables simultaneous solar-driven H 2 O 2 production and the selective oxidation of biomass, offering a sustainable pathway for green chemical manufacturing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MINERALS ENGINEERING
·
2026
·
IF 5
Yunzhen Hu,Kangjing Wu,Shuai Wang,Zhanfang Cao,Xin Ma,Hong Zhong
The flotation separation of chalcopyrite and galena remains challenging due to their similar surface properties. Here, we demonstrate that H 2 O 2 pretreatment passivates Cu sites (forming Cu–O) while activating Pb sites (forming Pb–O) on mineral surfaces, which transforms sodium 2-(dithiocarboxylato)ethyl acetate (DTCA) from non-selective into a galena-selective depressant. Micro-flotation experiments indicate that with H 2 O 2 oxidation duration of 30 min, pH of 10, and DTCA dosage of 100 mg/g, galena recovery can be reduced to below 5% while maintaining chalcopyrite recovery above 90%. Following oxidation, the adsorption amount of chalcopyrite decreased from 96.54 to 7 mg/g, while that of galena increased from 101.32 to 102.45 mg/g. Multiscale characterizations (FTIR, XPS, ToF-SIMS) indicate that DTCA adsorbs onto the surfaces of chalcopyrite and galena, respectively, via chelation between S–Cu–S and S–Pb–S bonds. Density functional theory (DFT) calculations confirm that oxidation enhanced the adsorption strength of DTCA on the surface of galena, with the adsorption energy shifting from −2.571 to −2.645 eV. Conversely, adsorption strength decreased significantly after oxidation of chalcopyrite, with the adsorption energy shifting from −2.470 to −1.588 eV. Closed-circuit tests on industrial concentrates yielded copper recovery and grade reached 93.13% and 27.43%, respectively, while lead achieved 96.33% recovery and 43.21% grade, with a separation index (SI) of 2.55, surpassing that achieved by the toxic potassium dichromate(K 2 Cr 2 O 7 ) method. This study proposes a Cr (VI)-free flotation strategy for efficient Cu–Pb separation, offering a promising alternative to conventional environmentally hazardous methods.
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产品关联
DOI
高影响因子
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