Catalysts
·
2026
·Vol. 16
·期 7
·663
·
IF 4.5
Yuping Dai,Wei Feng,Zhaolian Zhu,Muyao Li,Dejing Jin,Xuefei Gao,Hailing Wang
Low-cost, efficient, and durable electrocatalysts for two-electron oxygen reduction (2e−ORR) to synthesize hydrogen peroxide (H2O2) are essential for sustainable chemical manufacturing. Herein, we report a sustainable route to prepare activated carbon electrodes (ASC) from municipal sludge via chemical activation and pyrolysis. The electrode activated with 30 wt.% H3PO4and calcined at 600 °C for 2 h exhibited high catalytic activity. This electrode featured a hierarchical micro-/meso-/macroporous structure with a high BET surface area of 806.20 m2·g−1, abundant carboxyl groups (surface O content of 4.0 at.%), and high hydrophobicity (contact angle of 121.6°). The unique hierarchical porosity, high surface area, hydrophobic surface, and carboxyl functionalities synergistically enhanced O2mass transfer, exposed abundant accessible active sites, and stabilized the triple-phase interface. Electrochemical evaluation revealed that 30 wt.% H3PO4-ASC achieved a high H2O2selectivity of 86–92% with an electron transfer number of 2.2, approaching the ideal 2e−ORR pathway. Under optimized conditions (pH = 3, j = 5.0 mA·cm−2), it produced 997.3 mg·L−1of H2O2in 90 min, with a current efficiency of 68.8% and an energy consumption of 27.6 kWh·kg−1H2O2. Moreover, the electrode retained 81.1% of its initial H2O2production after 15 cycles, demonstrating good reusability and long-term stability. This work offers a sustainable strategy for high-value utilization of municipal sludge and advances the development of efficient electrocatalysts for green H2O2production.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 22
·1771
·
IF 3.2
Zhang Enlei,Xu Zhiyi,Song Xiaowen,Wang Shuyuan,Zhang Bengui,Xie Yingpeng,Wang Guosheng
Hydrogen peroxide (H 2 O 2 ) detection is of great significance in environmental monitoring, food safety, and clinical diagnosis. Copper doping into α-FeOOH nanorods significantly enhanced the sensitivity and stability for electrochemical detection of H 2 O 2 . The structure and surface morphology of the products were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The electrochemical properties of CuFe 2 O 4 /α-FeOOH were studied by cyclic voltammetry and amperometry. The results showed that the composition and morphology of the as-prepared products were dependent on the Cu doping level. When the Cu doping level was up to 10 mol%, a spinel copper ferrite (CuFe 2 O 4 ) phase was formed in the product, accompanied by a morphological evolution into nanoparticles. The CuFe 2 O 4 /α-FeOOH/FTO (Fluorine-doped tin oxide) electrode exhibited excellent performance to detection of H 2 O 2 with high sensitivity (125.86 μA·mM −1 ·cm −2 ) and a low detection limit (0.56 μM, S/N = 3). Finally, the possible mechanism of the CuFe 2 O 4 /α-FeOOH catalysts for H 2 O 2 detection was analyzed and discussed.
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ACS Applied Polymer Materials
·
2026
·Vol. 8
·期 14
·11353-11365
·
IF 5.2
Lu Junwei,Pei Caifeng,Yang Nuo,Wu Wei,Zhang Linping,Xu Hong,Mao Zhiping,Ji Bolin
Porous organic polymer (POP)-based photocatalysts can
generate
H 2 O 2 under light irradiation. However, their
performance is suppressed by strong polarization and low π-conjugation,
which limit the photogenerated electron separation and the selectivity
of two-electron oxygen reduction reaction (2e – ORR).
In this study, three kinds of POPs were designed and prepared from
1,3,5-tris( p -formylphenyl)benzene (TFPB) with different
nitrogen-containing (N-containing) monomers, including melamine (MA),
2,4,6-triaminopyrimidine (TA), and 1,3,5-triaminobenzene (TAB), yielding
POP-MA, POP-TA, and POP-TAB, respectively. Results demonstrated that
variations in the monomer structure significantly regulated the π-conjugation
degree and localized polarization of POPs, consequently influencing
the charge-carrier migration and the 2e – ORR pathway.
POP-TAB exhibited the most favorable conjugated structure and moderate
polarization and delivered the highest photocatalytic activity of
H 2 O 2 generation (1291.5 μmol g –1 h –1 ) as expected, significantly outperforming
POP-TA (919.6 μmol g –1 h –1 ) and POP-MA (260.9 μmol g –1 h –1 ). Furthermore, the superoxide radical anion ( • O – 2 )
was confirmed as the key reactive intermediate, and H 2 O 2 was predominantly generated via the 2e – ORR pathway. This work elucidates the synergistic roles of electronic
structure and polarization of N-containing monomers in regulating
H 2 O 2 generation over metal-free POP photocatalysts.
It provides a promising design strategy for achieving efficient solar-driven
H 2 O 2 generation through the combined engineering
of π-conjugation and localized polarization.
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Theranostics
·
2025
·Vol. 15
·期 12
·5953
·
IF 13.3
Rui Zhang,Danhua Mao,Yiyong Fu,Rong Ju,Guoqing Wei
Background: The pursuit of effective antibacterial strategies aimed at mitigating pathogenic bacterial infections while minimising drug resistance remains of paramount importance. A combinational therapeutic strategy that integrates distinct treatment components can enhance overall efficacy and mitigate undesired effects, thereby exhibiting considerable promise in combating bacterial infections. Methods: In this study, a meticulously engineered self-assembling hybrid nanoprodrug (CPBP NPs) has been devised, functioning as a hybrid prodrug of Ciprofloxacin (Cip) and hydroxybenzyl alcohol (HBA). Results: CPBP molecules can generate nanoassemblies via self-assembly and subsequently undergo decomposition to synchronously release Cip and HBA upon hydrogen peroxide (H 2 O 2 ) exposure. The CPBP NPs exert antibacterial and anti-inflammatory properties through the controlled release of Cip and HBA, while also facilitating the scavenging of reactive oxygen species. These CPBP NPs exhibit broad-spectrum antibacterial activity against both Gram-negative bacteria ( E. coli , 98.4%) and Gram-positive bacteria ( S. aureus , 98.5%). Notably, CPBP NPs not only accumulate in the lungs to facilitate organ-specific infection treatment but also expedite the healing process of infected wounds. Conclusions: Consequently, this H 2 O 2 -activatable hybrid nanoprodrug, possessing excellent biocompatibility, holds substantial promise for advancing clinical applications in managing bacterial infections.
研究领域:
药学
·
生物医学工程
·
感染病学
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CHEMOSPHERE
·
2020
·
IF 5.778
Jiafeng Ding,Lilai Shen,Ruopeng Yan,Shihuan Lu,Yinan Zhang,Xiaofang Zhang,Hangjun Zhang
Advanced oxidation processes (AOPs) based on the activation of hydrogen peroxide (H 2 O 2 ) and persulfate (PS) by minerals have received increasing interest for environmental remediation. Herein, H 2 O 2 and PS activation systems employing goethite as a catalyst were discovered for the rapid degradation of BPA with the generation of reactive oxidation species (ROS) and for the reduction of total organic carbon (TOC) in aqueous solutions. The morphology of goethite were characterized by XRD, SEM, BET, TEM, etc. As a result, the oxidant efficiency of the goethite/H 2 O 2 system (75.9%) was higher than that of the goethite/PS system (61.4%) after 240 min due to the restricted radical scavenging. According to the results of electron paramagnetic resonance (EPR) and radical quenching experiments, the main active ROS during the BPA degradation process were OH and SO 4 − . The two reaction systems were all pH-dependent that BPA can be effectively degraded in the goethite/PS system under acidic, neutral and weakly alkaline conditions, while the most inefficient degradation under alkaline conditions in the goethite/H 2 O 2 system. Moreover, goethite showed good structural stability in the two systems. Several reaction products were detected using LC-MS, and the mechanisms for three systems were proposed. Density functional theory (DFT) was employed to study the conceivable degradation pathways of BPA in the two processes. This work reveals novel mechanistic insights regarding H 2 O 2 and PS activation over goethite and implies the great potential application of the PS/mineral process in water and wastewater treatment .
研究领域:
环境科学
·
化学工程
·
水处理
·
高级氧化过程
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Chaoqing Xiang,Yuelan Chen,Baoping Qi,Hongjun Wu
Graphitic carbon nitride (g-C 3 N 4 ) exhibits significant potential in photocatalytic hydrogen peroxide (H 2 O 2 ); however, its practical application is constrained by narrow spectral light absorption, high charge carrier recombination rates, and insufficient surface-active sites due to inherent structural defects. Herein, ultrathin carbon nitride (UCN) nanosheets were coupled with porphyrin-based covalent organic frameworks (COFs) via π-π interaction and H-bond to construct 2D COF/UCN heterojunctions. The optimized catalysts demonstrated a remarkable H 2 O 2 production rate of 418.93 μmol·g −1 ·h −1 under visible light, representing a 5.3-fold enhancement over intrinsic g-C 3 N 4 . Crucially, band structure analysis and in situ infrared spectroscopy confirmed that the heterojunction of enhanced interfacial charge migration and spatial separation facilitated efficient H 2 O 2 generation via a single-step two-electron oxygen reduction pathway (O 2 + 2H + + 2e - → H 2 O 2 ). This work demonstrates that heterojunction engineering synergistically optimizes light harvesting, charge separation, and surface reactions, providing a novel paradigm for carbon nitride modification and establishing a design platform for solar-driven H 2 O 2 production.
研究领域:
材料科学
·
光催化
·
能源化学
·
纳米材料
·
环境科学
·
物理化学
·
可再生能源
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jingwen Wang,Muhammad Rauf,Peng Liu,Chaolin Li
Coupling the two-electron water oxidation reaction and two-electron oxygen reduction reaction to ensure the concurrent production of H 2 O 2 can remarkably improve its current efficiency and production rate, which is the bottleneck for H 2 O 2 electrosynthesis. However, ion crossover between cathode and anode chambers may significantly restrain two-electron water oxidation reaction and two-electron oxygen reduction reaction. Herein, we report a zero anion crossover system for simultaneous production of H 2 O 2 enables an outstanding overall current efficiency of 156% and a high generation rate of 385 µmol min –1 . The substantially improved performance is resulted from confining the essential anions (e.g., HO 2 – ) for two-electron oxygen reduction reaction in the cathode and maintaining the high activity of CO 3 2− mediator for two-electron water oxidation reaction in the anode. This work underscores the importance of ion crossover in paired electrochemical synthesis cells and provides a practical approach to developing a highly efficient electrogeneration system for H 2 O 2 .
研究领域:
电化学
·
能量转换
·
化学工程
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Wang Guancheng,Wei Xiaoli,Feng Kaizheng,Wu Yunfei,Dong Haijiao,Lu Mingze,Du Wei,Fang Qianglong,Ju Ming-Gang,Ma Jing-Yuan,Jiang Yali,Wu Haoan,Ma Ming,Zhang Yu
Prussian blue nanoparticles (PBNPs) have emerged as versatile nanozymes with reactive oxygen species (ROS)-scavenging capabilities, predominantly applied in antioxidant therapies. In this work, we present a combined theoretical and experimental study demonstrating that modulating Fe coordination environments can fundamentally reconfigure PBNPs’ catalytic properties, enabling ROS generation and pro-oxidative functionality. Ab initio molecular dynamics revealed different H 2 O 2 lysis mechanisms at Fe sites with varying coordination numbers: Low-coordinated center (FeN 4 ) induced hydrogen atom transfer to form Fe=O species, while high-coordinated FeN 5 generated ·OH radicals via H + -assisted homolysis under acidic conditions. Guided by calculations, Cs-doped PBNPs (Cs-PBs) with elevated coordination numbers were synthesized via alkali cation stoichiometric control, leveraging high distribution coefficient and low hydration energy of Cs + . Experimental results confirmed radical generation in Cs-PBs aligned with theoretical predictions. The size-optimized Cs-PBs demonstrated ultrahigh peroxidase-like activity (1182.26 U·mg -1 ) and outperformed ROS generating properties in both pollutant degradation and chemodynamic therapy. This work redefines PBNPs’ catalytic potential beyond conventional antioxidant roles, and lays the foundation for innovative environmental and therapeutic solutions.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zhenyu Zhang,Changlei Huang,Ze Liu,Chengkai Li,Danni Zeng,Rongfeng Guan,Changjian Zhou
Clean and sustainable energy conversion technology is a key contemporary scientific topic, and photocatalytic hydrogen production offers a new way to address the energy crisis. Here, based on the synergistic strategy of vacancy engineering and S-scheme heterostructure construction, a bifunctional photocatalyst of MoS 2 /ZnIn 2 S 4 -Vs (MoS 2 /ZIS-Vs) with sulfur vacancies (Vs) was developed by one-pot hydrothermal method. The best sample’s hydrogen production efficiency was 75.34 mmol·g −1 ·h −1 , which is 21 times higher than that of unmodified ZIS (3.42 mmol·g −1 ·h −1 ). Meanwhile, under air atmospheric conditions, its H 2 O 2 yield is 1126.66 μmol·g −1 ·h −1 , which is approximately 1.92 times that of ZIS (587.20 μmol·g −1 ·h −1 ). Under oxygen atmosphere conditions, this rises to 2144.84 μmol·g −1 ·h −1 , which is approximately twice the amount in an air atmosphere. Multiple characterizations show MoS 2 /ZIS-Vs’s vacancy engineering and heterostructure adjust ZIS’s band structure, enhance light absorption, and boost charge separation/transfer, with good stability. The DFT calculations show that MoS 2 /ZIS-Vs has an extremely low Gibbs free energy (−0.03 eV). This indicates that the synergistic action of the S-scheme heterojunction and sulfur vacancies significantly reduces the reaction barrier, thereby improving hydrogen and H 2 O 2 production efficiency. The research findings show that it has important application value in the field of solar energy conversion.
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POLYMER INTERNATIONAL
·
2025
·
IF 3.6
Kaiwen Mou,Fancheng Meng,Xiaomeng Li,Zixing Zhang,Yang Jiao,Bai Xue,Fan Zhang
Assembling various organic building blocks through carbon–carbon double-bond linkages is highly efficient for constructing high-performance organic semiconductors. Microporous/nanoporous structures can provide robust mass collection accommodation and reactive reaction sites. Here, we report the synthesis of a series of vinylene-linked conjugated porous polymers by Knoevenagel condensation of a tetratopic monomer tetramethyl-2,2′-bipyridine with different ditopic monomers. The presence of the 2,2′-bipyridine building blocks created π-extended conjugation polymeric frameworks, substantial n -type semiconducting properties and coplanar conformation. These frameworks also exhibit strong electron-deficient characters and finely tuned energy levels. Upon visible light irradiation, they exhibited the highest activity of hydrogen peroxide generation up to 1413 μmol h −1 g −1 in pure water. Their excellent recycling and reusability suggest their potential applications in green chemical transformation. © 2025 Society of Chemical Industry.
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CHEMOSPHERE
·
2018
·
IF 4.427
Xiang Li,Minghua Zhou,Yuwei Pan
Diclofenac sodium (DCF) is frequently detected as a non-steroidal pharmaceutical in the aquatic environment. In this study, the degradation of DCF in two heterogeneous systems, pre-magnetization Fe 0 /H 2 O 2 (Pre-Fe 0 /H 2 O 2 ) and Fe 0 /H 2 O 2 system, was comparably studied. Our findings proved that Pre-Fe 0 could significantly improve the degradation and dechlorination of DCF due to the change of Fe 0 characteristics after pre-magnetization. Compared with Fe 0 /H 2 O 2 process, Pre-Fe 0 /H 2 O 2 process has 2.1–7.0 times higher rate constant for DCF degradation at different H 2 O 2 dosages (0.25–2.0 mM), initial pH (3.0–6.0) and Fe 0 dosages (0.25–1.5 mM). The characterizations by X-ray Photoelectron Spectroscopy and Electron Paramagnetic Resonance confirmed that the enhancement attributed to the increase of Fe 0 corrosion and fast generation of OH . In addition, preliminary degradation mechanism was elucidated by major products identification using UPLC-MS, through which the degradation intermediates, such as 4-hydroxy-diclofenac or 5-hydroxydiclofenac, 2,6-dichloroaniline, phenylacetic acid, 1,3-dichlorobenzene and 2-aminophenylacetic acid were identified. Hydroxylation, decarboxylation , C N bond cleavage and ring-opening involving the attack of OH or other substances, were the main degradation mechanism. Therefore, Pre-Fe 0 /H 2 O 2 process, which does not need extra energy and costly reagents, is an efficient and environmental-friendly process to degrade DCF.
研究领域:
环境科学
·
化学工程
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高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Yifang Wu,Jianwang Wu,Mei Lin,Zuliang Chen
The Fenton oxidation system is a widely employed advanced oxidation processes (AOPs) in wastewater treatment. However, the traditional Fenton oxidation system suffers from low oxidant utilization efficiency, leading to significant resource wastage. This study presents a novel self-Fenton Cu-Mn bimetallic catalyst (with a Cu:Mn ratio of 10:1), which is capable of simultaneously activating O 2 to generate H 2 O 2 in situ and further catalyzing the decomposition of H 2 O 2 to produce reactive oxygen species (ROS). Notably, this self-Fenton system demonstrate high removal efficiency for ciprofloxacin (CIP) across a broad pH range (2−9), achieving up to 92.55 % removal in water. Quenching experiments, electron paramagnetic resonance (EPR) analysis, steady-state concentration measurements, and Galvanic oxidation reactor (GOR) experiments collectively confirmed the generation of multiple ROS species (·OH, ·O 2 − , and 1 O 2 ) and indicated that electron transfer plays a significant role in pollutant degradation. X-ray photoelectron spectroscopy (XPS) analysis revealed that Cu 0 exhibited high catalytic activity, enabling simultaneous generation and activation of H 2 O 2 . Liquid chromatography-mass spectrometry (LC-MS) and toxicity assessments demonstrated a significant reduction in the toxicity of CIP degradation products. This work elucidates a novel Cu-Mn synergistic mechanism wherein Mn facilitates the generation of H 2 O 2 , while Cu effectively activates it into ROS. This synergism effect enables the removal of pollutants through both radical and non-radical pathways, thereby offering an innovative strategy for environmental remediation and AOPs.
研究领域:
环境科学
·
化学工程
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高影响因子
危险品化学品经营许可证（带存储）