Journal of Water Process Engineering
·
2026
·
IF 6.6
Yichao Wang,Xuan Wu,Quanyou Zhao,Yujie Fu,Xijin Li,Ruidian Su,Mengchun Gao
Electro-Fenton (EF) technique is recognized as one of efficient advanced oxidation technologies for degrading recalcitrant biological pollutants. However, the practical application of EF technique suffers from poor 2e − oxygen reduction reaction (ORR) selectivity and low H 2 O 2 production efficiency. To settle above-mentioned issues, a natural air diffusion electrode (NADE)-EF system was constructed by using S doped N-rich biochar as a cathode, which was synthesized from waste mantis shrimp shells and thiourea. By modulating the biochar/thiourea ratio, the S doped N-rich biochar cathode achieved selective 2e − ORR and highly efficient H 2 O 2 production. The production rate of H 2 O 2 on the S doped N-rich biochar cathode was 1.56 times that on the undoped biochar cathode. The S doping enhanced the O 2 adsorption and electron transfer and facilitated the *OOH intermediate formation. The tetracycline degradation rate in the S doped N-rich biochar NADE-EF system was 2.29 times that of the undoped biochar NADE-EF system. The S doped N-rich biochar NADE-EF system showed good cyclic stability and anti-interference ability. This work provides the insights into the structure-activity relationship between heteroatom doping and H 2 O 2 production through 2e − ORR and proposes an efficient NADE-EF technique to remove antibiotics from water.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Mengying Wang,Xinxuan Wang,Hai Chen,Zhonglei Zhang,Qi Yang,Zhilin Yang
EB–oxidant systems greatly enhanced quinoline removal and mineralization. • Oxidant coupling redirected degradation from bi-aromatics to rapid ring-cleavage. • EB/PMS enabled fastest detoxification; EB/H₂O₂ ensured deepest oxidation. In present work, the degradation of quinoline, the intermediates produced and their toxicity were evaluated using electron beam (EB) irradiation and its coupling with oxidants (H 2 O 2 and peroxymonosulfate) processes. Under the conditions of an initial quinoline concentration of 50 mg/L and pH= 9, a complete removal of 100% and 40% mineralization was achieved at an absorbed dose of 5 kGy. EB irradiation efficiently decomposes quinoline, with ·OH identified as the dominant reactive species. However, high initial substrate concentration, low pH, and elevated salinity reduced mineralization efficiency by promoting radical scavenging. Coupling oxidants significantly enhances system performance. EB/H 2 O 2 amplified ·OH generation, achieving the highest TOC removal, while EB/PMS rapidly removed quinoline even in coking wastewater, demonstrating strong resistance to complex matrices. EB alone generated multiple bi-aromatic intermediates, limiting mineralization. EB/H 2 O 2 redirected degradation toward the C9 pathway, producing fewer intermediates and facilitating deep oxidation. EB/PMS accelerated ring-cleavage, preferentially forming mono-aromatic end-products. Toxicity evaluation showed that intermediates formed under EB alone were more toxic than quinoline. EB/PMS achieved the fastest detoxification and EB/H 2 O 2 achieved the highest mineralization. This work provides new mechanistic insights into EB-based advanced oxidation and supports its application in real industrial wastewater treatment. Download: Download high-res image (146KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Jianying Li,Mingyue Luo,Kehui Zhang,Honghong Rao,Haile Liu,Ruibin Qiang,Zhentong Zhu,Marcin Frankowski,Zhonghua Xue
Conventional lateral flow immunoassay (LFIA) based on gold nanoparticles (AuNPs) often suffer from low detection sensitivity. Current signal enhancement strategies, such as metal in situ growth and enzyme catalysis, still face challenges, including poor stability of exogenous chromogenic reagents (prone to aggregation/degradation), uncontrollable enhancement processes, and strong background interference. To address these critical limitations, we developed an in situ, controllable, and background-free self-color-changing enhanced LFIA (SCCE-LFIA) utilizing novel cerium oxide nanoparticles coated with a polydopamine layer (CeO2@PDA NPs). The core of this method involves the H2O2-triggered oxidation of Ce3+ to Ce4+ on the nanoprobe surface, inducing a distinct colorimetric signal change from colorless/light brown to yellow/orange directly at the test line (T line). This intrinsic chemical-state-transition-driven signal enhancement fundamentally circumvents issues of uncontrollable enhancement processes, diffusion of chromogenic products, and nonspecific adsorption, thereby eliminating severe background interference. It strongly enables rapid and sensitive detection of cardiac troponin I (cTnI), a crucial clinical biomarker, with a low visual limit of detection (vLOD) of 0.8 ng/mL with only 30 s of coloration. This work establishes a precedent for the design of in situ, controllable, and background-free signal enhancement strategies, confirms the effectiveness of CeO2@PDA NPs as substitutes for traditional chromogenic substrates, and paves the way for the development of accurate and reliable point-of-care testing (POCT) in analytical chemistry and clinical diagnostics.
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2026
·
IF 11.8
Qian Ning,Chengcheng He,Xiaolin Xue,Yan Zhang,Longqing Zhang,Yuhong Liang,Yang Ren,Jing Xu,Xucai Yin
The two-electron oxygen reduction reaction (2e − ORR) provides a sustainable route for green hydrogen peroxide (H 2 O 2 ) synthesis, but the development of p -block metal catalysts that combine high activity with long-term stability remains challenging. Herein, we propose a hierarchical core-shell catalyst, SiO 2 @C/Sn. Mesoporous silicon dioxide (SiO 2 ) serves as a rigid confinement scaffold to effectively suppress the migration and aggregation of Sn nanoparticles. Simultaneously, a conductive carbon layer was in-situ formed on the SiO 2 surface, markedly enhancing interfacial charge transport. Importantly, the interfacial electronic structure of the Sn nanoparticles is moderately tuned by the combined effect of SiO 2 confinement and the continuous electronic interface provided by the carbon layer, thereby maintaining an optimal adsorption-desorption balance for the *OOH intermediate and significantly improving selectivity toward the 2e − pathway. SiO 2 @C/Sn achieves H 2 O 2 selectivity exceeding 97% and a production rate of 16.15 mol·g − 1 ·h − 1 in alkaline media, while 80% selectivity with a yield of 8.13 mol·g − 1 ·h − 1 in neutral media. The catalytic activity shows almost no decay after 100 h of continuous operation. In-situ spectroscopies combined with DFT calculations further reveal that polarization coupling at the SiO 2 -carbon interface induces electronic redistribution that optimizes the electronic states of Sn sites and thereby stabilizes the 2e − reaction pathway.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Henan Peng,Fengqin Hong,Pan Chen,Chunhai Chen,Daming Wang,Hongwei Zhou
In this study, a novel organic solvent-resistant nanofiltration membrane was prepared on a polyimide ultrafiltration base membrane using a copper sulfate (CuSO 4 )/hydrogen peroxide (H 2 O 2 ) oxidation triggered polydopamine (PDA)/polyethyleneimine (PEI) deposition interlayer. The PDA/PEI interlayer exhibits strong adhesion with base membrane, effectively connecting the ultrafiltration base membrane to the polyamide active layer, thus enhancing the solvent resistance of the nanofiltration membrane. The CuSO 4 /H 2 O 2 catalyst significantly reduces the deposition time of PDA/PEI on polyimide base membrane. Additionally, copper (II) ions (Cu 2+ ) can form complexes with the amino groups (NH 2 ) of the aqueous phase monomer m-phenylenediamine (MPD), thereby slowing the diffusion rate of MPD into the organic phase. The interlayer contains a significant number of hydroxyl and amino groups, which can engage in hydrogen bonding interactions with MPD, thereby further regulating the reaction rate. The resulting nanofiltration membranes exhibit excellent hydrophilicity, as demonstrated by their minimal water contact angle, and are capable of positively influencing the permeance of polar solvents. Notably, the nanofiltration membrane prepared with a deposition time of 15 min and a CuSO 4 concentration of 45 mmol/L exhibited optimal performance, achieving a methanol permeance of 16.20 L m -2 h −1 bar −1 and Rhodamine B dye rejection rate of 96.9 %. The permeance of different solvents was determined to rely on the inherent characteristics of those solvents. Furthermore, the membrane maintained good separation performance after being immersed in N, N-dimethylformamide at 80 °C for 6 days. This method offers a novel perspective for the development of nanofiltration membranes that are resistant to organic solvents.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Chenyu Zhou,Jianxin Qiang,Wanyi Zhang,Yuntai Lv,Xingguang Su
The application of peroxidase-like nanozymes in on-site detection was often restricted due to the cumbersome operation caused by necessary step of adding H 2 O 2 . Herein, a novel composite peroxidase mimic CuO 2 @S/Cu-NC with self-supplying H 2 O 2 function was prepared by in situ synthesis of the copper peroxide nanodots (CuO 2 ) on the S/N co-doping carbon-based copper nanozyme (S/Cu-NC). The CuO 2 could produce H 2 O 2 in acidic environment, and the in situ formed H 2 O 2 could immediately bind to the active sites of S/Cu-NC, resulting in the greatly accelerated catalytic reaction efficiency. Because of the property of H + -induced H 2 O 2 production of CuO 2 @S/Cu-NC, the changes of pH value could affect its peroxidase-like activity. Therefore, a sensitive and convenient method for histamine sensing was established. Furthermore, a convenient test swab was designed for the portable histamine detection and visual monitoring the of seafood freshness, which showed great potential of multifunctional nanozyme in the field of food monitoring.
研究领域:
食品安全
·
纳米技术
·
生物传感器
·
分析化学
·
食品质量监控
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Dahua Yu,Qingdan Liao,Xitong Li,Fumin Liu,Jingxin Huang,Huilin Guan,Yizong Huang
The pore confinement environment critically restricts mass transfer efficiency in advanced oxidation process (AOPs). Hydrothermal carbons with hierarchical pore architectures significantly influence mass transfer of substances in AOPs, resulting in notable differences in performance. In this study, Fe-modified spent coffee grounds hydrothermal carbon (Fe@SCGSHC) contains Fe 2+ active sites, was synthesized using coffee grounds. We systematically compared the mass transfer and activation differences between persulfate (PMS) and hydrogen peroxide (H₂O₂) within a confinement pore environment, elucidating a micropore-mediated regulatory mechanism for performance of dual oxidizers. The diffusion constant of H₂O₂ ( K d₂ = 0.1953 mg/g·min 1/2 ) was 466 times greater than that of PMS ( K d₂ = 0.000419 mg/g·min 1/2 ). Besides, the oxidation rate constant of H₂O₂ increased from 0.026 to 8.481 (mg/L) −1 ·h −1 . 0.1 g Fe@SCGSHC achieved 100 % degradation of 5 mg/L sulfamethoxazole (SMX) within 5 min. The mechanistic study showed that the microporous structure enhances the Fe 2+ /Fe 3+ cycling within confined spaces, accelerating reaction kinetics and shifting traditional Fe-based catalysts from radical pathways (SO₄ •- , •OH) to singlet oxygen ( 1 O₂) pathways, revealing the selective advantage of micropores for H₂O₂ activation to generate 1 O₂. The stability experiments results indicated that 0.01 g Fe@SCGSHC achieved a 70.71 % removal of total organic carbon (TOC) in 5 mg/L SMX aquatic environments, exhibiting good anti-interference capability and ecological safety. In conclusion, the adoption of an appropriate pore structure can enhance the mass transfer efficiency of AOPs, leading to the effective degradation of pollutants. This study provides a scientific foundation for the preparation and modification of hydrothermal carbon and the mass transfer of substances in AOPs.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jiabao Wu,Meiyu Xu,Bo Wang,Lijun Liao,Mingxia Li,Wei Zhou
The low utilization of solar energy and rapid recombination of photogenerated carriers severely restrict the development of photocatalytic H 2 O 2 production. In this study, a Ni/NiTiO 3 heterojunction (Ni/NTO) with an atomically shared heterointerface is synthesized via an in-situ reduction strategy. The constructed Ni/NTO heterojunction possesses an intimate interface originating from the shared Ni atoms between metallic Ni nanoparticles and NiTiO 3 nanorods (NTO), effectively facilitating interfacial charge transfer and separation between the two components. Additionally, the localized surface plasmon resonance (LSPR) effect induced by oxygen vacancy defects endows the Ni/NTO heterojunction with enhanced near-infrared (NIR) light-harvesting capability and substantial photothermal conversion efficiency. The synergistic effect between oxygen vacancy defects and the strongly coupled interface with shared Ni atoms significantly enhances solar energy utilization efficiency and photogenerated charge carrier separation efficiency of Ni/NTO heterojunction. The Ni/NTO heterojunction exhibits excellent photocatalytic H 2 O 2 production performance, achieving an H 2 O 2 generation rate of 10608 µM/g/h, which is approximately 55 times higher than pristine NTO. Notably, under NIR light (λ > 800 nm) irradiation, a H 2 O 2 production rate of 4022 µM/g/h is achieved. This work is anticipated to provide valuable guidance for the rational design of high-efficiency full-spectrum-responsive heterojunction photocatalysts through coupling interface and defect engineering.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Huage Lin,Mengjiao Yu,Dehui Zhang,Jiangang Han,Guangyu Wu,Weinan Xing
Low charge separation efficiency remains a key bottleneck limiting the performance of photocatalysts. In this study, we propose a novel van der Waals (vdW) heterojunction photocatalyst—ReS 2 supported on S-doped porous carbon nitride nanosheets (denoted as ReS 2 @CNS)—synthesized via a pre-coordination confinement strategy. This work introduces an innovative integration of interface engineering and band structure modulation to simultaneously promote spatial charge separation and extend visible light absorption. The novelty lies in the rational design of the vdW heterojunction interface, which not only facilitates efficient migration of photogenerated electrons by suppressing charge recombination, but also leverages ReS 2 as a high-efficiency electron acceptor. The resulting composite demonstrates significantly enhanced multifunctional photocatalytic performance, achieving an H 2 evolution rate of 5693.04 μmol g −1 h −1 (3.8 times that of CNS), a CO generation rate of 63.17 μmol g −1 h −1 (approximately 3.0 times that of CNS), and an H 2 O 2 production rate of 200.70 μmol g −1 h −1 . This study pioneers a synergistic approach by combining vdW heterojunction construction with targeted electron acceptor design, providing a new paradigm for the development of high-performance, multifunctional photocatalysts and offering valuable theoretical and practical insights for solar-to-chemical energy conversion.
研究领域:
材料科学
·
纳米技术
·
光催化
·
能量转换
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yandong Xu,Wenhao Su,Zihui Jing,Zhouyu Jiang,Mingliang Wang
The development of highly active photocatalysts for H 2 O 2 production is of significant practical importance for addressing environmental issues and energy shortages. In this study, an S-scheme heterojunction photocatalyst with strong redox performance was synthesized through the in-situ growth of the TpPa-Cl covalent organic framework (COF) material on the surface of Cu-loaded ZnO nanorods. The incorporation of Cu disrupts the charge shielding effect of ZnO, promotes the spatial separation of charge carriers, and enhances piezoelectric catalytic activity. Furthermore, the porous ultra-thin COF layer extends carrier lifetime and increases the contact area with reactants, endowing the composite with strong light absorption capacity and excellent oxygen reduction performance. Under the combined influence of the piezoelectric-photocatalytic dual electric field, the H 2 O 2 yield of the composite in pure water reached 1838.8 μmol g −1 h −1 , and the resulting H 2 O 2 solution can be directly utilized for pollutant removal and water disinfection. In situ X-ray photoelectron spectroscopy, density functional theory calculations, and electron spin resonance studies elucidate the S-scheme electron transfer mechanism, which accelerates the transfer of photogenerated carriers and enhances the utilization of electron-hole pairs. This research offers a novel approach for the design and development of catalysts aimed at efficient H 2 O 2 production.
研究领域:
光催化
·
材料科学
·
环境科学
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Kang-Le Xie,Huan Zhang,Dan-Dan Jiang,Jun-Jie Hu,He-Rui Wen
The efficiency of photocatalytic H 2 O 2 synthesis by polymer carbon nitride (CN) is impeded by insufficient exciton dissociation and charge carrier transport, and sluggish redox reaction dynamics. However, no report has systematically clarified these specific impacts based on precise intramolecular donor-acceptor (D-A) structural models of CN. Herein, three newly designed CN-based polymers are firstly reported for the first time by introducing different numbers of thiophene groups (n = 1, 2, 3) as electron donors. The introduction of different conjugated thiophene enables modulation of the conjugations within the CN plane, thereby achieving different photocatalytic activity for H 2 O 2 production in pure water under air. The optimal photocatalyst (named as CN-DTD) exhibits the highest H 2 O 2 evolution rate of 14200 μM g −1 h −1 without additional sacrificial agents, which is 6.3-fold of bulk CN (2267 μM g −1 h −1 ), and exceeding numerous reported CN-based materials. Comprehensive experimental characterizations and theoretical calculations disclose that increasing the number of thiophene groups, from 2.43 D to 3.67 D, contributes to a larger dipole moment, generating a robust internal electric field that not only weakens exciton effect and promotes subsequent intramolecular charge transfer, but also enhances O 2 adsorption and activation while lowering the activation energy barrier of ∗OOH, thereby accelerating H 2 O 2 formation. This work provides new insights for designing molecular-level catalysts for the green synthesis of H 2 O 2 .
✓ 已验证
DOI
高影响因子
MOLECULAR NEUROBIOLOGY
·
2025
·Vol. 63
·期 1
·1-14
·
IF 4.3
Cai Minghui,Guo Qi,Li Jiaxin,Dai Xiaoqi,Su Huiyu,Zhang Wenwen,Qiang Na,Li Geng,Jin Zihan,Zhu Hui
The factors influencing hippocampal aging are complex, and it remains challenging to identify effective anti-aging drugs and reveal pharmacological mechanisms. This study investigates the effects of autophagy mediated by the SIRT1/FoxO1 signaling pathway on resveratrol resistance to H 2 O 2 -induced aging and apoptosis in mouse hippocampal neurons. HT22 cells were treated with resveratrol and H 2 O 2 to evaluate the effects of resveratrol on H 2 O 2 -induced aging and apoptosis. The levels of P21, P53, BAX, Cleaved Caspase-3, and Bcl-2 were measured to estimate aging and apoptosis. Western blot, immunofluorescence assays, and transmission electron microscopy observation were used to detect the regulation of resveratrol on autophagy. 3-Methyladenine was used to block autophagy, and EX-527 was used to inhibit SIRT1. The changes of autophagy factors and the levels of SIRT1/FoxO1 signaling pathway were assayed. H 2 O 2 treatment induced aging in HT22 cells, manifesting increased levels of P21 and P53 and decreased cell viability. H 2 O 2 treatment aggravated apoptosis, showing increased levels of BAX and Cleaved Caspase-3, decreased levels of Bcl-2, and increased apoptotic cells. Resveratrol alleviated aging and apoptosis in H 2 O 2 -induced HT22 cells. Mechanically, resveratrol activated autophagy by up-regulating the levels of LC3B Ⅱ/Ⅰ and Beclin1 and down-regulating P62 against aging and apoptosis, which was abolished by 3-Methyladenine. Western blot results showed resveratrol activated SIRT1/FoxO1 signaling pathway which was related to regulation of autophagy. EX-527 treatment suggested resveratrol could not activate autophagy when the SIRT1/FoxO1 signaling pathway was blocked. These findings indicated that resveratrol activated autophagy via SIRT1/FoxO1 signaling pathway to protect against H 2 O 2 -induced aging and apoptosis in HT22 cells.
研究领域:
神经科学
·
分子生物学
·
细胞生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）