CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.7
Rundong Chen,Yuhang Zhang,Bingquan Xia,Xianlong Zhou,Yanzhao Zhang,Shantang Liu
Photocatalysis is deemed a green approach to sustainable energy conversion with great promise for addressing future energy challenges. However, traditional photocatalytic systems are often inhibited by rapid recombination of photogenerated electron-hole pairs and low light-harvesting efficiency. To overcome these challenges, an S-scheme heterojunction integrating Zn x Cd 1– x S y (ZCS) nanocrystals with FePS 3 (FPS) nanosheets was designed to facilitate both photocatalytic hydrogen evolution and the conversion of benzyl alcohol to benzaldehyde (BAD). The obtained ZCS/FPS-15 (ZCSF-15) heterostructure exhibits remarkable visible-light-harvesting enhancement and charge separation efficiency, delivering a hydrogen evolution rate of 73.06 mmol g −1 h −1 and a BAD production rate of 46.68 mmol g −1 h −1 , corresponding to 22.34- and 53.65-fold performance enhancements, respectively, compared with that of bare ZCS. To reveal the charge transfer dynamics and clarify the reaction mechanisms, in-situ diffuse-reflectance Fourier-transform infrared spectroscopy was used to identify key oxidation intermediates, coupled with interfacial charge transfer dynamics probed using in-situ X-ray photoelectron spectroscopy and atomic force microscopy-Kelvin probe force microscopy. This work establishes a dual-function heterojunction model, offering valuable insights into how to design S-scheme heterojunctions for simultaneous green fuel generation and selective organic synthesis.
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GREEN CHEMISTRY
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2026
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IF 9.2
Yujie Yuan,Ziyu Yang,Hao Wang,Tong Wu,Xiaoyi Zhang,Lin Chen,Zhaohuan Wei,Rui Wang,C. Venkata Reddy,Jaesool Shim,Hui Tang
Electrocatalytic seawater splitting holds immense promise as a green hydrogen production technology; however, the anodic oxygen evolution reaction (OER) confronts formidable challenges arising from the high concentration of chloride ions (Cl -) and other impurities in seawater. Herein, we develop a facile two-step immersion corrosion strategy to successfully construct a Ni 3 S 2 @FeOOH heterojunction electrocatalyst on nickel foam (NF) tailored for industrial alkaline seawater oxidation. Integrating density functional theory (DFT) calculations and experimental characterizations, we demonstrate that Ni 3 S 2 @FeOOH selectively enriches OH -while repelling Cl -during OER in alkaline seawater electrolytes. Notably, in situ leaching of SO 4 2-from the electrode triggers efficient self-reconstruction, facilitating the generation of high-valence metal active sites. The asfabricated catalyst exhibits remarkable OER performance with a low overpotential of 390.5 mV at an ultrahigh current density of 1000 mA cm -2 in alkaline seawater. Moreover, it maintains exceptional electrochemical stability for over 1000 hours at the industrial current density of 1000 mA cm -2 . This work provides a scalable strategy for constructing self-reconstructing electrocatalysts that promote highvalence metal site formation and efficient Cl -repulsion in alkaline seawater oxidation.
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MACROMOLECULES
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2026
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IF 5.7
Zuo Peng,Li Tingting,Song Shihao,Chu Weizhuo,Gu Xiaoyan,Zhu Youliang,Li Haolong
Sulfonated poly(arylene alkane)s with all-carbon aromatic backbones are promising proton exchange membrane (PEM) materials, but their high conductivity generally relies on a high degree of sulfonation, which often causes excessive water swelling and compromises dimensional stability. Here, we report a side-chain design that introduces sulfur-containing hydrogen-bonding sites to promote proton transport while preserving dimensional stability. Haloalkyl-functionalized poly(arylene alkane)s were grafted with mercaptoalkyl sulfonates, yielding sulfonic acid-terminated side chains bridged by thioether linkages. The resulting polymers form continuous ionic domains through backbone/side-chain microphase separation, while thioether and sulfonic acid groups cooperate to construct dense hydrogen-bonding networks for proton hopping. The optimized SPBT-1 membrane exhibits a high proton conductivity of 308 mS cm –1 at 80 ° C, 1.6 times that of NR212, with comparable swelling. The H 2 /air fuel cell based on SPBT-1 achieves a high power density of 780 mW cm –2 and stable open-circuit operation over 80 h. These results demonstrate side-chain sulfur functionalization as an effective strategy for highly conductive PEMs.
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AICHE JOURNAL
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2026
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IF 4.4
Yaxin Cai,Xiaoyan Chen,Fuying Zhang,Ting Qiu,Qinglian Wang,Jie Chen
Ethyl methyl carbonate (EMC) is mainly prepared via the transesterification between ethanol (EtOH) and dimethyl carbonate (DMC) using alkaline catalysts. However, reported catalysts exhibit deactivation, environmental pollution, and low efficiency. Herein, we prepared a heterogeneous catalyst based on phenolate anion ([PhO] − )-functionalized poly(ionic liquid)s (PILs). Catalytic performance improved via rational PIL framework design with quaternary ammonium cations, which co-tuned polymer swelling and [PhO] − electronegativity. Among the series, [N 3 PIL][PhO], the most active catalyst, featuring high swelling degree and strong [PhO] − electronegativity, was validated by experiments and DFT calculations. Under optimized conditions (DMC/EtOH molar ratio = 3, catalyst dosage = 5 wt%, reaction time = 5 h, temperature = 100°C), EMC yield and selectivity reached 53.57% and 95.75%, respectively. This work offers a viable strategy to overcome conventional catalyst drawbacks and new insights for efficient heterogeneous EMC synthesis catalyst design.
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Nanomaterials
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2026
·Vol. 16
·期 16
·984
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IF 4.8
Yangfan Du,Guanglong Jing,Keyi Han,Xin Zhang,Liang Hou,Yong Li
The global demand for hydrogen peroxide (H2O2) continues to increase, and photocatalytic H2O2production is regarded as a promising alternative technology due to its mild, safe, and environmentally friendly characteristics. ZnIn2S4has demonstrated promising application potential in photocatalytic H2O2production owing to its unique two-dimensional layered structure and broad spectral response. However, its performance is severely limited by rapid charge recombination and sluggish charge migration. To address this challenge, a ZnIn2S4/C3N4S-scheme heterojunction was successfully constructed via a simple oil-bath method by assembling ZnIn2S4nanoflowers on C3N4nanosheets. Systematic structural characterizations and performance evaluations demonstrate that the construction of the S-scheme heterojunction effectively promotes the spatial separation and surface migration of photogenerated charge carriers, thereby significantly enhancing photocatalytic activity. Under optimal conditions, the ZIS/CN-10 sample (C3N4to ZnIn2S4mass ratio of 10%) achieves the highest photocatalytic H2O2production rate of 825.8 μmol g−1h−1. This work provides new insights and theoretical guidance for the rational design of efficient and stable ZnIn2S4-based photocatalysts.
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ChemistrySelect
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2026
·Vol. 11
·期 30
·e74050
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IF 2.3
Yuqing Jiang,Guowei Liu,Hongxu Jia,Yuyue Zhang,Hongzhe Tian
Due to the potential risks, pesticide residue analysis has attracted widespread attention. In this study, an “off-on” fluorescence sensor for rapid detection of three target insecticide residues has been developed based on the cascade reaction system caused by acetylcholinesterase/choline oxidase dual enzyme. N and S-doped carbon quantum dots (N, S-CQDs) were used as the fluorescent probe. The substrate acetylcholine chloride was hydrolyzed to choline by acetylcholinesterase. Subsequently, choline oxidase oxidized the resulting choline to betaine and H 2 O 2 , and the generated H 2 O 2 quenched the fluorescence of N, S-CQDs. The selected insecticides inhibited acetylcholinesterase activity, and therefore the sensing system's fluorescence was recovered. The linear ranges for indoxacarb, propamocarb, and fenobucarb were 3.0×10 −3 –8.0×10 −2 mg/L, 2.0×10 −3 –5.5×10 −2 mg/L, and 2.2×10 −3 –6.5×10 −2 mg/L, respectively. The corresponding limits of detection ranged from 2×10 −3 to 3×10 −3 mg/L. For spiked concentrations between 5 µg/L and 0.1 mg/L, the average recoveries of the selected insecticides ranged from 99.6% to105%, with relative standard deviations in the range of 1.2% to 4.8%. The proposed method presents the advantages of simple operation without using requiring specialized apparatus, fast speed, low cost, and environmental friendliness. These benefits make it suitable for rapid detection of the selected insecticide residues in real samples. Graphical In the present study, a fluorescence sensor was developed based on enzyme-mediated cascade reaction on N, S-CQDs. N, S-CQDs in the sensor present excellent fluorescence properties. Three target insecticides can be rapidly detected in real samples with easy operation and cost-effectiveness. The selected insecticides can be detected with the LODs from 2.0 ng/mL to 3.0 ng/mL.
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ACTA PHYSICO-CHIMICA SINICA
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2026
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IF 13.5
Yanyan Zhao,Jing Zhang,Xiaolong Li,Hailun Su,Lin Yang,Jianjun Zhang
A stable Py-HOF was prepared by employing H 4 TBAPy as precursor. • A TiO 2 /Py-HOF composite with excellent photocatalytic activity was constructed. • T/Py-HOF shows stability due to strong H-bonds and π–π interactions of H 4 TBAPy. • S-scheme charge transfer pathway was verified via ISI-XPS, fs-TAS, and DFT. • T/Py-HOF display good photocatalytic H 2 O 2 production yield and sterilization. Hydrogen-bonded organic frameworks (HOFs) hold substantial potential for application in photocatalysis. However, their practical application in photocatalytic H 2 O 2 generation and antibacterial activity remains hampered by intrinsically inefficient electron-hole separation and inadequate structural stability. Herein, a Py-HOF photocatalyst was prepared by employing 1,3,6,8-tetrakis (p-benzoic acid) pyrene (H 4 TBAPy) as precursor via self-assembly method, and the titanium dioxide/Hydrogen-bonded organic framework (TiO 2 /Py-HOF, T/Py-HOF) S-scheme heterojunction was rationally fabricated via an in-situ synthesis. Due to the strong hydrogen bonds and π–π interactions of H 4 TBAPy, the T/Py-HOF S-scheme heterojunction displays super stability. Furthermore, in-situ irradiated XPS, femtosecond transient absorption spectroscopy, and DFT calculations verify the S-scheme carrier migration mechanism within the T/Py-HOF heterojunction. Thanks to the ultrafast charge-transfer and excellent redox ability of the T/Py-HOF S-scheme photocatalyst, the optimally formulated T/Py-HOF-5% achieves a remarkable H 2 O 2 production rate of 1890 μmol g −1 h −1 , corresponding to approximately 15.24 and 6.19-fold enhancements compare to the pure TiO 2 and bare Py-HOF, respectively, along with excellent stability. Furthermore, the T/Py-HOF heterojunction also exhibits superior photocatalytic sterilization activity against Escherichia coli (E. coli) , achieving almost 100% of E. coli inactivation after 90 min light irradiation. Collectively, this work offers a novel insight for designing high-efficiency HOF-based S-scheme photocatalysts in energy and environment applications. A novel TiO 2 /Py-HOF S-scheme heterojunction was fabricated for efficient photocatalytic H 2 O 2 production and excellent photocatalytic E. coli sterilization. Download: Download high-res image (202KB) Download: Download full-size image
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INORGANIC CHEMISTRY COMMUNICATIONS
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2026
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IF 5.9
Ying-hong La,Wen-jia Ha,Yong-hu Ma,Zhi-qiang Wu,Hong-jian Zhao
In this work, an S-scheme heterojunction photocatalyst composed of Fe-MOF-NH 2 -modified BiOCl (denoted as BFN) was successfully prepared via a one-step hydrothermal technique for the efficient photocatalytic (PC) decomposition of tetracycline hydrochloride (TC-HCl). The morphology, crystal structure, composition, specific surface area, and photoelectric characteristics of BFN were systematically characterized using multiple techniques. XRD patterns confirm the successful fabrication of Fe-MOF-NH 2 /BiOCl (BFN) heterostructures. Introducing Fe-MOF-NH 2 shrinks BiOCl lattices via partial replacement of Bi 3+ with smaller Fe 3+ , which further exposes more active BiOCl (110) facets. SEM images display BiOCl nanosheets evenly grown on spindle hexagonal Fe-MOF-NH 2 to create compact heterointerfaces. This structure optimizes pore configuration and light capture. Owing to its elaborate heterojunction and regulated crystal texture, BET data confirm the optimal BFN possesses a high specific surface area of 116.2 m 2 ‧g −1 . UV–vis DRS further verifies a 420 nm red shift in its light absorption edge. XPS and EPR analyses reveal that the oxygen vacancy concentration in the heterojunction is significantly increased, 3 and 8 times higher compared to those of Fe-MOF-NH 2 and BiOCl, respectively. The compact S-scheme heterojunction constructs a directional charge-carrier transfer pathway. This structure strongly suppresses photocarrier recombination while preserving robust redox potentials. Higher photocurrent density and lower EIS impedance jointly confirm accelerated charge separation. PC experiments demonstrate that the 70% BFN sample achieves markedly higher degradation efficiency for TC-HCl under Light-emitting diode (LED) lamp irradiation compared with the individual components, and the degradation process involves multiple reactive species, including h + , ·O 2 − , and ·OH. LC-MS analysis revealed three possible degradation pathways, and hydroponic toxicity tests using mung bean as the model plant confirmed that the TC-HCl degradation products exhibit substantially reduced biotoxicity and even exert a certain growth-promoting effect. This study unveils the quadruple synergism of extended light absorption, S-scheme carrier migration, abundant oxygen vacancies and enhanced surface adsorption, offering experimental and theoretical support for bismuth/MOF photocatalysts in antibiotic wastewater remediation and agricultural ecological protection.
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EUROPEAN POLYMER JOURNAL
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2026
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IF 6.8
Di Ma,Xiaoming Huang,Pengfei Jiang,Minghao Zhai,Chunli Ma,Na Wei,Hongting Han,Wanan Cai,Tingting Zhou,Haijun Niu
Electrochromic supercapacitors (ECSCs) find extensive applications in flexible wearable, self-powered smart windows because of their visual energy storage characteristics. ECSCs simultaneously achieve rapid response, high transmittance and high specific capacity. Due to O, S heterocycle with more electron cloud which will bring more electroactive properties, two monomers and a series of polyamides (PAs) films containing furan, thiophene blocks (named as PA1, PA2, PA3, PA4, PA5 and PA6) are designed and synthesized. All the six PAs demonstrate a colorless to dark green/dark blue, while PA2 shows an initial optical contrast of 86 %, bleaching time (t b ) and coloring time (t c ) of 0.9 s and 1.2 s. Simultaneously PA2 delivers a specific capacitance of 197.2F g −1 at a current density of 1 A g −1 . When the current density rises to 20 A g -1 from 1 A g −1 , its capacitance retention rate remains at 79 % of its initial capacitance after undergoing 3000 charge–discharge cycles. ECSCs with PA1, PA2 assembled exhibit a ΔT of 70 % and 76 %. The ECSCs have a specific capacitance (60.1F g −1 and 69.1F g −1 at 1 A g −1 ), with 70 %, 69 % of initial specific capacitance following 2000 consecutive charge–discharge cycles. These PAs containing O, S heterocycle cores demonstrate promising prospect for ECSCs.
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POLYMER DEGRADATION AND STABILITY
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2026
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IF 8.1
Nanshan Wu,Shukang Zhou,Wuxiang Chen,Suqin He,Miaoming Huang,Wanlin Xu,Chengshen Zhu,Wentao Liu,Hao Liu
Balancing performance, cost, and end-of-life management remains a challenge for sustainable polyethylene alternatives. This work investigates the thermal degradation pathways of fully bio-based poly(alkylene sebacate)s synthesized from sebacic acid and C 2 -C 6 α,ω-alkanediols. By systematically varying diol length and parity, we reveal that the pyrolysis kinetics are fundamentally governed by the interplay between ester dipole alignment and methylene segment length. In poly(ethylene sebacate) (PESe), the combination of antiparallel dipoles and short ethylene glycol segments induces dense inter-chain interactions and a homogeneous activation energy landscape, triggering a single-stage F1 random chain scission. Conversely, polyesters lacking this structural uniformity, whether due to odd-even parity (PPdSe, PPtSe) or extended even-even segments (PBSe, PHSe), preserve the energetic distinction between amorphous and crystalline domains. This phase separation leads to a sequential two-stage F2 to F3 degradation. Beyond programmable thermal stability, these polyesters exhibit tensile strengths comparable to high-density polyethylene (HDPE), resist neutral hydrolysis, yet are susceptible to enzymatic degradation and closed-loop chemical recycling into monomers. These findings establish diol parity and conformational constraints as precise design parameters for tailoring the end-of-life profiles of sustainable polyesters.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Xiaoyan Xiang,Yang Liang,Jincheng Liu,Wenxin Yang,Bingjie Li,Lei Li,Yanxiong Fang
VO 2 nanorods and V 3 O 7 nanowires were synthesized and coupled with ZnIn 2 S 4 via solution method. • V 3 O 7 -ZIS and VO 2 -ZIS exhibit opposite interfacial charge transfer: ZIS.→V 3 O 7 vs. VO 2 →ZIS. • Both composites show broadened visible-light absorption and enhanced charge separation efficiency. • Optimized V 3 O 7 -ZIS-150 delivers 30.14 mmol g −1 h −1 H 2 evolution with excellent stability. • S-scheme V 3 O 7 -ZIS preserves strong redox power and promotes ·O 2 − and ·OH generation. Solar-driven photocatalytic hydrogen evolution is crucial for sustainable energy conversion but is limited by insufficient charge separation and weak redox capability. Herein, VO 2 -ZnIn 2 S 4 (ZIS) and V 3 O 7 -ZIS heterojunctions were rationally constructed via a two-step synthesis, anchoring ZIS nanosheets onto VO 2 nanorods and V 3 O 7 nanowires. Optimized V 3 O 7 -ZIS-150 achieves an exceptional H 2 evolution rate of 30.14 mmol g −1 h −1 , 2.72 times higher than VO 2 -ZIS. X-ray Photoelectron Spectroscopy (XPS), electrochemical, and electron spin resonance (ESR) analyses reveal S-scheme configurations for both heterojunctions: electrons transfer from the V 3 O 7 conduction band (CB) to the ZIS valence band (VB), and from the ZIS CB to the VO 2 VB, preserving strong reduction/oxidation potentials. V 3 O 7 -ZIS has a more negative VB potential than VO 2 -ZIS, enhancing hole oxidation and •O 2− /•OH generation, thereby boosting H 2 activity. This comparative study demonstrates that engineering V 3 O 7 -based S-scheme heterojunctions is effective for high-performance photocatalysts, providing mechanistic insights for sustainable energy applications. Download: Download high-res image (353KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Huijun Liang,Mengyao Ma,Chencong Li,Lixia Li,Xin Li,Mengjun Sun,Xiang Zhen,Hongjun Chen,Diandian Shi,Jianxun Dong,Xiaobing Wang
Sn 4+ modulated FeSn bimetallic MOF-on-MOF S-scheme heterojunctions are fabricated. • pH and Sn 4+ synergistically control catalyst morphology and composition distribution. • Optimized NM-FeSn exhibits superior N 2 photoreduction activity and stability. • Sn 4+ doping modulates Fe redox state and optimizes interfacial charge kinetics. • In-situ DRIFTS identifies the full NRR pathway on NM-FeSn heterostructure. Solar-driven photocatalytic nitrogen fixation (PNF) represents a sustainable and eco-friendly alternative to the energy-intensive Haber–Bosch process. Nevertheless, its practical implementation is greatly restricted by sluggish N N bond activation, rapid photogenerated carrier recombination, and insufficient multi-electron/proton transfer kinetics. Herein, dual-phase MOF-on-MOF S-scheme heterojunctions with well-tuned Fe Sn bimetallic active sites (NM-FeSn) are rationally constructed by introducing high-valent Sn 4+ via a facile one-pot solvothermal strategy. Benefiting from the unique 4d 10 5s 0 5p 0 electronic configuration, the incorporated Sn 4+ effectively modulates the electronic structure of the NH₂-MIL framework, optimizes the Fe 2+ /Fe 3+ redox ratio, and improves the structural and chemical stability of the catalyst. The optimal NM-FeSn delivers a prominent NH 3 evolution rate of 2.85 mmol L −1 g −1 h −1 and a high apparent quantum yield of 2.49% at 420 nm, which outperforms previously reported Sn-doped MOF-5 and ZIF-8 photocatalysts. On the basis of systematic photoelectrochemical tests, multi-spectroscopic characterizations, and in-situ DRIFTS measurements, the intrinsic S-scheme charge transfer mechanism and Fe Sn bimetallic synergistic effect are unambiguously revealed. Such synergistic effects significantly accelerate interfacial spatial charge separation, suppress photogenerated carrier recombination, and prolong carrier lifetime. This work systematically clarifies the electronic modulation mechanism of high-valent Sn 4+ doping and provides a versatile structural regulation strategy for the rational design of high-efficiency MOF-based heterojunction catalysts toward artificial nitrogen fixation and other energy conversion applications. Download: Download high-res image (106KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）