MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Xizhen Huang,Yongzheng Duan,Xili Shang,Yuejin Li,Dongmei Jia,Changhai Li
Fenton-like oxidation is a widely used advanced oxidation processes (AOPs) for the removal of persistent organic compounds. However, its development is significantly constrained by low H 2 O 2 utilization, the loss of transition metal ions, and the presence of harsh acidic conditions. Herein, a catalyst composed of MgO supported on porous P-doped graphitic C 3 N 4 (P-CN) was fabricated using a straightforward stepwise calcination process. The catalyst exhibited excellent performance in catalyzing the degradation of tetracycline (TC) through activated H 2 O 2 in the dark. The maximum reaction rate constant of the synthesized catalyst for TC degradation was 0.034 min −1 , which was nearly 62 times that of MgO and 18 times that of CN. The enhancement of catalytic properties was attributed to the doping of g-C 3 N 4 by P and the N-Mg bonds formed between g-C 3 N 4 and MgO, which not only enhanced charge transfer capabilities but also promoted the conversion of H 2 O 2 into 1 O 2 , •OH, and •O 2 − , thereby benefiting the degradation of pollutants. The effects of various parameters, including catalyst dosage, pH level, common interfering substances, and H 2 O 2 and TC concentrations, on degradation efficiency were examined in detail, and the ecological risk associated with the catalytic degradation of TC was predicted. In addition, the MgO/P-CN catalyst exhibited high stability, low H 2 O 2 consumption, and a broad pH range, had no transition metal components, and did not require an external energy input, demonstrating potential for the removal of organic pollutants and toxic waste.
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RSC Advances
·
2026
·Vol. 16
·期 30
·27756-27764
·
IF 6.1
Chunchun Wei,Mixia Chen,Wei Hu,Fei Yan,Yu Cui
An enzymatic electrochemiluminescence (ECL) sensor based on a ternary luminol system is developed for highly sensitive detection of uric acid (UA). The platform integrates nanochannel-confined platinum nanoparticle (PtNPs) and nitrogen-doped graphene quantum dot (NGQDs) nanocomposites (PtNPs–NGQDs) as coreaction accelerators, with urate oxidase (Uox) covalently immobilized at the nanochannel entrances. In this design, an amino-functionalized vertically ordered mesoporous silica film (NH2-VMSF) confined the PtNPs–NGQDs within its nanochannels, while Uox is attached to the outer surface. The confined PtNPs–NGQDs exhibit a synergistic catalytic effect, amplifying the ECL signal of the luminol–H2O2 system by 16.1-fold. In the presence of UA, immobilized Uox catalyzes its oxidation to generate H2O2, which is subsequently decomposed by the PtNPs–NGQDs nanocomposite, leading to enhanced ECL emission. Under optimized conditions, the sensor exhibits two linear response ranges for UA (0.01–1 µM and 1–50 µM) and a low detection limit of 8.1 nM (S/N = 3). The sensor also demonstrates good selectivity and stability, enabling reliable UA quantification in complex urine samples. This work provides a simple and versatile strategy for constructing sensitive ECL enzymatic platforms suitable for the detection of metabolites.
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Analytical Methods
·
2026
·Vol. 18
·期 21
·4433-4443
·
IF 3
Weitian Chen,Hui Dong,Siyu Wang,Yitong Jiang,Yujia Qian,Aixin Chang,Jiahui Ding,Xue Yang,Yanli Zhou,Yintang Zhang,Zhaohui Li,Maotian Xu
Hydrogen peroxide (H2O2), as a crucial intracellular reactive oxygen species (ROS) and secondary messenger, plays a key role in various physiological and pathological processes. Therefore, accurate detection of H2O2 is of great significance for investigating disease mechanisms. In this study, a novel fluorescence and colorimetric dual-mode probe, Re-FS, was designed and synthesized based on a resorufin (Re) scaffold, employing a pentafluorobenzenesulfonyl (FS) group as the recognition moiety. Upon reaction with H2O2, the FS group undergoes a nucleophilic substitution reaction, releasing Re and triggering a fluorescence “turn-on” response accompanied by a distinct color change. The detection limits were determined to be 5 µM for the fluorescence mode and 10 µM for UV-vis mode, both exhibiting a linear range of 0–1 mM. Benefiting from the strong electron-withdrawing effect of the fluorine atoms in the FS group, the probe demonstrates excellent selectivity against various potential interferents. It has been successfully applied for the effective sensing and imaging of H2O2 in serum and living cell environments. Furthermore, the visible color transition of the probe solution facilitates the development of a portable H2O2 visual detection platform based on smartphone RGB analysis. This dual-mode detection strategy enables cross-validation of results, providing a promising tool for monitoring neurodegenerative diseases.
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CATALYSIS TODAY
·
2026
·
IF 5.1
Xiangdi Liu,Yihang Zhang,Wenwen Tian,Hongshang Peng
The solar-driven synthesis of hydrogen peroxide (H 2 O 2 ) using graphitic carbon nitride (g-C 3 N 4 ) is inherently limited by rapid charge recombination and insufficient light absorption. To address this issue, pre-synthesized nitrogen and sulfur co-doped carbon dots (N,S-CDs) were introduced onto g-C 3 N 4 nanosheets via a hydrothermal pre-anchoring strategy followed by calcination. The as-synthesized N,S-CDs/g-C 3 N 4 composites exhibited an enhanced H 2 O 2 production rate (1162.8 μmol·g −1 ·h −1 ), which was approximately 4.7 times higher than that of pristine g-C 3 N 4 . The improvement of photocatalytic activity was primarily attributable to the construction of step-scheme (S-scheme) heterojunction, which not only expedited the spatial separation of photogenerated charge carriers but also preserved the high redox potentials essential for efficient H 2 O 2 synthesis. Furthermore, the N,S-CDs broadened the light absorption range, enabling more effective utilization of visible light. This work provides a promising strategy for rational design of CD-based heterojunctions toward high-efficiency solar-driven H 2 O 2 production.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
PengJiang Chao,Sheng Zhang,EnZhou Liu,Bing Wang,XiaoXun Ma,Zhuo Li
Bi/Sb dual-doping forms synergistic site pairs in ZnIn 2 S 4 , switching O 2 to Yeager-type adsorption. • Yeager-type enables direct 2e - ORR, suppresses •O 2 - , and boosts H 2 O 2 selectivity. • Bi/Sb-ZIS achieves 2612.6 μmol·g⁻¹·h⁻¹ H 2 O 2 and 91.8% TC degradation for integrated purification. Photocatalytic oxygen reduction provides a sustainable route for green hydrogen peroxide (H 2 O 2 ) synthesis, yet its efficiency is often hindered by slow multi‑step electron transfer and competing side reactions. Here, we engineer the surface microenvironment of ZnIn 2 S 4 through Bi/Sb dual doping, creating spatially and electronically complementary “Bi–Sb synergistic site pairs”. These dual sites collectively steer O 2 into a Yeager adsorption configuration and promote direct one‑step 2e - reduction, shifting the dominacnt ORR mechanism from the conventional, radical-prone two-step route to a highly efficient and selective direct pathway. The optimized catalyst achieves a high H 2 O 2 production rate of 2612.6 μmol·g −1 ·h −1 in simulated antibiotic wastewater while simultaneously degrading 91.8% of tetracycline. Mechanistic studies reveal that this pathway switching originates from the synergistic electron transfer at the dual sites, which not only stabilizes the Yeager‑type adsorption conformation but also largely suppresses the formation of •O 2 - intermediates. This work provides an effective bifunctional photocatalyst for integrated “Pollutant Solutions purification–chemical synthesis” systems and establishes a general design principle for controlling multi‑electron reaction pathways through the rational construction of synergistic active sites. Download: Download high-res image (191KB) Download: Download full-size image Bi/Sb-ZIS promotes Yeager-type O 2 adsorption and direct 2e - ORR, delivering exceptional H 2 O 2 yield and pollutant degradation in a dual-functional photocatalytic system.
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Molecular Catalysis
·
2025
·
IF 4.9
Haipeng Xiao,Hongyan Pan,Weiyue Zhao,Chunliang Yang,Zheng Chen,Mingrui Liao,Qian Lin,Song Li
The direct synthesis of hydrogen peroxide (DSHP) through the reaction of hydrogen and oxygen under atmospheric pressure offers a highly atom-economic and environmentally friendly approach. However, this process is hindered by low productivity and selectivity of H 2 O 2 . Inspired by the adhesive properties of mussels, we successfully developed a bimetallic nanocluster catalyst, Pd x Ni y /SiO 2 @PDA, leveraging strong metal-support interactions (SMSI) for enhanced catalytic performance. Among these, the catalyst Pd 0.7 Ni 0.3 /SiO 2 @PDA demonstrated exceptional catalytic activity, achieving H 2 O 2 productivity and selectivity of 7210.60 mmol/g Pd ·h -1 and 95.30 %, respectively—representing improvements of 319.51 % and 33.50 % over the unmodified Pd/SiO 2 catalyst (1718.84 mmol/g Pd ·h -1 and 61.80 %). The anchoring mechanism of phenolic hydroxyl and amino groups on the polydopamine (PDA) coating was systematically investigated using control groups modified with tea polyphenols (TP) and 3-aminopropyltriethoxysilane (APTES), rich in phenolic hydroxyl and amino groups, respectively. Characterization revealed that amino groups on the PDA layer served as the primary anchoring sites, and the phenolic hydroxyl and quinone groups play a role in optimizing the electronic structure of Pd in an electron-deficient state. Synchrotron-based X-ray absorption fine structure (XAFS) analysis and density functional theory (DFT) calculations further revealed that the incorporation of Ni, a metal with a smaller atomic radius and lower electronegativity, reduced the Pd-Pd interatomic distance and shift the d -band center downwards from -1.72 eV to -1.94 eV. This modification inhibited the dissociative adsorption of O 2 * at Pd sites, thereby significantly enhancing H 2 O 2 productivity and selectivity.
研究领域:
催化化学
·
材料科学
·
环境科学
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ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Ruonan Jiang,Zhenzhen Cai,Huazangnaowu Bai,Yali Liu,Baiyi Zu,Xincun Dou
The precise modulation of the π-conjugated bridge within a probe is of considerable importance for the development of reaction-based fluorescent probes endowed with specific functionalities. Here, a series of naphthalimide-based fluorescent probes with a fluorescence ratio and attenuated sensing properties for H2O2 have been designed by precisely tuning the type of the π-conjugated bridge located between the boric acid recognizing the moiety and the naphthalimide fluorophore. The modulation of the π-conjugated bridge species mainly focused on three structural units, thiophene, benzene, and furan, among which the thiophene helped us to construct the most efficient naphthalimide-based fluorescent probe (E)-(5-(((2-(2-mercaptoethyl)-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)imino)methyl)thiophen-2-yl)boronic acid (MOHB-IMTP). It demonstrated the most remarkable fluorescence changes before and after the reaction and thus a significantly superior sensing performance for H2O2, including fairly good selectivity and a lower limit of detection (LOD, 38.5 nM). In addition, based on cellulose-induced aggregation of the reaction products, the MOHB-IMTP/cellulose probe was further developed and proven to have a faster and more sensitive (4.0 nM) detection toward H2O2. We postulate that this π-conjugated bridge modulation and cellulose signal enrichment strategy will actively promote the development of high-performance fluorescent probes and sensing devices.
研究领域:
分析化学
·
生物传感
·
材料科学
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Materials
·
2025
·Vol. 18
·期 8
·1786
·
IF 3.2
Xu Wang,Nan Wang,Kunpeng Liu,Meinan Yang,Ruiyong Zhang,Sikandar Khan,Jinhui Pang,Jizhou Duan,Baorong Hou,Wolfgang Sand
Marine biofouling causes significant economic losses, and conventional antifouling methods are often associated with environmental pollution. Hydrogen peroxide (H2O2), as a clean energy source, has gained increasing attention in recent years. Meanwhile, electrocatalytic 2e−oxygen reduction reaction (ORR) for H2O2production has received growing interest. However, the majority of current studies are conducted on acidic or alkaline electrolytes, and research on 2e−ORR in neutral NaCl solutions remains rare. Here, a bimetallic Zn-Cd zeolitic imidazolate framework (ZnCd-ZIF) is rationally designed to achieve chloride-resistant 2e−ORR catalysis under simulated seawater conditions (pH 7.5, 3.5% Cl−). Experimental results demonstrate that the ZnCd-ZIF catalyst exhibits an exceptional H2O2selectivity of 70% at 0.3 VRHE, surpassing monometallic Zn-ZIF (60%) and Cd-ZIF (50%). Notably, H2O2production reaches 120 mmol g−1in a Cl−-containing neutral electrolyte, exhibiting strong resistance to structural corrosion and Cl−poisoning. This work not only pioneers an effective strategy for designing ORR catalysts adapted to marine environments but also advances the practical implementation of seawater-based electrochemical H2O2synthesis.
研究领域:
材料科学
·
电化学
·
环境科学
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Chen Yu,Dawei Liang,Chao Qu,Na Ren,Qinghao Wu,Xiaohu Li,Jingjing Yao
Electro-oxidation is a promising technology for treating refractory organic pollutants in landfill leachate but faces challenges of high energy consumption and inefficient degradation of complex organics. This study introduces a manganese single-atom catalyst (MnSAC) doped on carbon nanotubes (CNTs) within a gas-diffusion electrode to enhance electro-oxidation performance. The bifunctional catalyst simultaneously promotes 2e oxygen reduction reaction for H 2 O 2 generation and in-situ activation of H 2 O 2 to produce reactive oxygen species, primarily hydroxyl radicals ( • OH). In a system employing a Ni-Sb-SnO 2 anode and operating under the operation conditions (initial chemical oxygen demand: 478 mg L 1 ; electrolyte: 0.1 mol L 1 Na 2 SO 4 , current density: 10 mA cm 2 , volume: 100 mL), a 90% removal rate (reduced to 49 mg L 1 ) was achieved. The core innovation lies in the unique N-coordinated MnSAC (Mn-N 4 ) sites on CNTs, identified via Density Functional Theory calculations to exhibit ΔG of −3.46 eV for H 2 O 2 activation and organic adsorption. The Mn-N-C structure modulates the d-band center to optimize electron/charge distribution and transfer. This synergistic design: 1) enhances H 2 O 2 activation and radical generation, 2) accelerates organic pollutant adsorption/degradation, and 3) improves reaction kinetics. The catalyst addresses critical issues like metal leaching and energy inefficiency, offering a robust, sustainable solution for refractory organic wastewater treatment.
研究领域:
环境科学
·
催化
·
电化学
·
材料科学
·
废水处理
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2025
·Vol. 40
·期 6
·1739-1749
·
IF 1.1
Zeng Fanbiao,Liu Zhanwei,Yan Hengwei,Li Lan,Li Mengnan,Hu Mingyi
To efficiently address the current high cost associated with preparing pseudo-boehmite from organic aluminum, a low-cost alternative, AlCl 3 , is employed as the raw material. The sol-gel method is utilized, and H 2 O 2 is incorporated for the modification of pseudo-boehmite. The modification mechanism is thoroughly investigated through the use of X-ray powder diffractometer, scanning electron microscope, and BET data analysis, as well as molecular dynamics simulations. Under specific conditions (temperature at 80 °C, pH=7, and H 2 O 2 volume ratios of 0.5:1, 1:1, and 2:1), mesoporous pseudo-boehmite is synthesized with a specific surface area of 227 m 2 /g, a pore volume of 0.281 cm 3 /g, a pore size of 6.78 nm, and a peptizing index of 99.47%. A novel and innovative methodology for the cost-effective production of high-performance alumina is offered through the approach.
研究领域:
材料科学
·
化学工程
·
纳米技术
·
计算化学
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Journal of Environmental Health Science and Engineering
·
2025
·Vol. 23
·期 2
·1-15
·
IF 2.8
Luo Weishi,Cao Jiayu,Dai Weixuan,Geng Qingfen,Qiu Yuankai,Yu Hanying,Ye Zhuotian,Liu Huan
Background Antibiotic contamination in aquatic systems demands advanced oxidation solutions. This study develops a nano zero-valent iron (nZVI)-activated peroxide system to address sulfadiazine (SDZ) persistence and associated ecological risks. Methods Structural properties of nZVI were analyzed by TEM/XRD. Process parameters were optimized through Box-Behnken design. Degradation mechanisms were investigated via radical quenching experiments, HPLC-MS analysis, and acute toxicity bioassays. Significant findings The system achieved complete SDZ (20 mg L⁻¹) removal within 5 min under optimal conditions (pH 2.44, 0.12 g L⁻¹ nZVI, 0.009% H₂O₂), showing strong agreement with pseudo-first-order kinetics (k = 0.637 min ⁻¹, R²=0.998). Hydroxyl radicals dominated SDZ degradation, generating 12 transformation products through amino oxidation, hydroxylation, and sulfonamide bridge cleavage. Toxicity reduction (60–90% EC50 improvement) confirmed effective detoxification. This work establishes nZVI-driven peroxide activation as a viable strategy for antibiotic wastewater remediation. Graphical abstract
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Catalysts
·
2025
·Vol. 15
·期 6
·544
·
IF 4
Tingting Hu,Baozeng Ren,Liang Zhao
Hydrogen peroxide (H2O2) is an important industrial chemical that is widely applied in many areas. The direct synthesis of H2O2from H2and O2has proved to be a green and economic pathway. Pd-based bimetallic catalysts, due to their superior catalytic performances in this reaction, have attracted intensive attention. Herein, Tetrakis(hydroxymethyl)phosphonium chloride (THPC) was adopted as the protective ligand to immobilize Pd-Au alloy nanoparticles onto activated carbon (AC). The varied Pd/Au molar ratios demonstrated homogeneously distributed Pd-Au nanoalloys with average particle sizes ranging from 3.51 to 5.75 nm. The optimal ratio was observed over the Pd3Au1/AC-THPC catalyst with a maximum H2O2productivity of 165 mol/(kgPd·h) and selectivity of 82.3% under ambient pressure. The relationship between the electronic structure and catalytic activity indicated Pd0was the active site, while the presence of Au inhibited H2O2degradation rate. This research could help in the design efficient bimetallic catalysts for the direct synthesis of H2O2.
研究领域:
化学
·
催化材料科学
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