CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 13.2
Jie Huang,Ziang Zong,Penghui Wang,Hong Zhou,Yuxuan Zhang,Zhanjun Li
Photocatalytic CO₂ reduction is a promising route for solar fuel production, yet it is often hampered by inefficient charge separation and compromised redox power in conventional heterojunctions. Here, we report a thermal-mediated strategy that intelligently reconfigures the charge transfer pathway in In 2 O 3 /BiOCl heterojunctions from a conventional Type-II to a S-scheme. This transition is driven by the in situ formation of synergistic dual defects—oxygen vacancies and metallic bismuth—enabled by precise solvothermal control. The oxygen vacancies serve as efficient CO 2 adsorption and activation sites, while metallic Bi functions as effective electron bridges. This defect synergy collectively reconstructs the interfacial electronic structure, as directly evidenced by in situ XPS and EPR and confirmed by DFT calculations, which reveal a reversed band alignment conducive to S-scheme charge flow. The resulting S-scheme In 2 O 3 /BBC-Ov heterojunction (InBBC-4) achieves a superior CO production rate of 96.11 μmol g −1 h −1 with 96.7 % selectivity, substantially outperforming its Type-II counterpart. This work offers profound atomic-level insights and establishes a simple thermal-tuning paradigm for designing high-performance photocatalysts through defect-mediated control of charge pathways.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiaoyi Hu,S. Ravi P. Silva,Peng Zhang,Kangli Liu,Shijie Zhang,Guosheng Shao
A main huddle against the practical application of lithium-sulfur battery lies in serious safety concerns due to liquid organic electrolyte, shuttling of polysulfides and formation of lithium dendrites. Herein, we have devised an asymmetric and structurally stable gel electrolyte system to enable high ionic conductivity, flame-retardancy, and effective blockage of shuttling. Such a multi-functional gel electrolyte utilizes an electro-spun network of interwoven nano-fibers of poly vinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) as structural scaffolds, with SiO 2 -polyvinyl alcohol (SiO 2 @PVA) suspension being loaded at one surface by blade coating. Such asymmetrically coated PVDF-HFP membranes are highly wettable that is essential to thorough gelling, with its well-connected porous channels to enable outstanding ionic conductivity above the limit by conventional Celgard separator, to accommodate huge volumetric changes over redox reactions, to shield polysulfides and fend off lithium dendrites. Ultimately, application of the gel electrolyte to a model Li-S cell with cathode containing 90% S delivered high initial capacity of 1439 mA h g −1 at 0.1C and a remarkable cycling stability over 300 cycles at 1C. The current gel electrolyte is expected to provide a valuable means for developing safe low-cost and durable Li–S batteries of practical importance.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
·
IF 4.6
Guofa Sun,Ziwei Pan,Man Zhang,Shaozhi Yang,Peng Yang,Jincheng Chen,Xie Fu,Wenqiang Lu
Lithium‑sulfur (Li-S) batteries are a highly promising energy storage technology due to their exceptionally high theoretical energy density. However, their practical implementation faces significant challenges, including sluggish redox kinetics and the troublesome shuttling of lithium polysulfides (LiPSs). In this work, a hierarchical TiO 2-x nanostructure was utilized as the sulfur host. Sulfur was uniformly integrated into the structure through a melt-diffusion infiltration process. The introduced oxygen vacancies in TiO 2-x provide strong chemical adsorption of polysulfides, effectively suppressing the shuttle effect and reducing active material loss. The nanoflower architecture-composed of interconnected nanosheets-offers a high specific surface area (104.45 m 2 g −1 ) and large pore volume (0.4698 cm 3 g −1 ). This design not only increases the number of accessible active sites but also helps accommodate volume changes during cycling. Furthermore, electron paramagnetic resonance (EPR) confirms the abundance of oxygen vacancies, which act as catalytic sites to enhance polysulfide anchoring and accelerate Li 2 S nucleation kinetics. As a result, the TiO 2-x -CNS@S cathode achieves a high initial discharge capacity of 1398 mAh g −1 at 0.1C and demonstrates remarkable long-term cycling stability. At 1C, it maintains an ultralow capacity decay rate of 0.054% per cycle over 1000 cycles. This dual-functional host design offers an effective and scalable strategy to simultaneously improve reaction kinetics and cycling durability in high-performance Li-S batteries.
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Journal of Energy Storage
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2026
·
IF 10.7
Mengyao Li,Liangtao Yang,Xinyao Bian,Hailiang Cao,Min Zhao,Peizhi Liu,Zhi Zheng,Wei Deng,Junjie Guo
The practical implementation of lithium‑sulfur (Li - S) batteries is critically hindered by the polysulfide shuttle effect and the sluggish conversion kinetics of lithium polysulfides (LiPSs). Herein, we design a freestanding interlayer comprising bimetallic phosphide nanoparticles embedded within interconnected porous carbon nanofibers (NiCoP@PCNF). In this architecture, the conductive PCNF skeleton functions as a physical barrier and facilitates rapid electron/ion transport, while the polar NiCoP nanoparticles serve as robust chemical anchors for LiPSs. Notably, density functional theory calculations and electrochemical analyses reveal that NiCoP acts as an efficient electrocatalyst by modulating its d-p band center, which optimizes electron transfer and substantially accelerates the liquid-solid conversion of LiPSs. Benefiting from this synergistic adsorption-catalysis effect, Li-S cells equipped with the NiCoP@PCNF interlayer deliver outstanding electrochemical performance, including a high initial capacity of 1652 mAh g −1 at 0.1C, an excellent rate capability of 1013 mAh g −1 at 2C, and exceptional cycling stability with a retained capacity of 757 mAh g −1 after 200 cycles at 3.0C. This work highlights a strategic design for multifunctional interlayers through the integration of conductive carbon frameworks with bimetallic phosphides, offering a promising pathway toward high-performance Li-S batteries.
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Forests
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2026
·Vol. 17
·期 8
·956
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IF 3.1
Yong Wang,Yongyao Li,Zhongjun Cheng,Caiyun Wang,Min Liu,Maochang Zhou,Xiangyu Zhang
Under-forest wild-simulated cultivation ofGastrodia elataBl.f. glauca S. Chow(Wu Tianma, WTM) offers a viable pathway for reconciling ecological conservation with economic and health benefits, yet optimal seed tuber regimes remain understudied. We established nine planting regimes varying in single-tuber weight and per-hole dosage in a karst plateau area, monitored tuber yield and bioactive components (gastrodin,p-Hydroxybenzyl alcohol, and parishin), and evaluated performance via one-way ANOVA and a comprehensive index. At equal per-hole dosage, individual tubers of 10–15 g achieved the highest comprehensive index (57.13%), whereas those <5 g performed poorly (28.66%). With respect to seeding rate, the maximum yield (5.27 kg/m2) was achieved at 250 g per hole, while the highest combined content of gastrodin andp-Hydroxybenzyl alcohol (0.29%) and the peak parishin content were observed at 350 g and 150 g per hole, respectively. While tuber weight and seeding rate significantly affected yield, they had minor impacts on bioactive composition, suggesting that medium-sized seed tubers with moderately increased dosage can synergistically improve yield and quality. Our findings provide empirical benchmarks for germplasm selection and agronomic optimization in WTM cultivation, and call for multi-scale studies integrating soil microbiota and microclimate to unravel cascading mechanisms for sustainable quality enhancement.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Jun-Chuan Wang,Peng-Liang Zhang,Wen-Bo Zhang,Tai-Sen Zhang,Zi-Yan Zhen,Tian-Yu Wang,Xiang-Xiang Jia,Gang Yu
Modulating localized electronic structures and interfacial charge-transfer pathways in metal-organic framework (MOF)-based heterogeneous catalysts remains a critical challenge for achieving efficient and durable advanced oxidation processes. Herein, a highly crystalline S-scheme NH₂-MIL-101(Fe)@DQ-TFP (NM@DT) core-shell heterojunction was constructed through a microwave-assisted MOF-first in situ growth strategy. Distinct from conventional physical assembly, the anthraquinone-based β-ketoenamine covalent organic framework (COF) shell was integrated with the amino-functionalized MOF core through chemically coupled growth and interfacial hydrogen-bonding interactions, generating a robust core-shell interface. This intimate interfacial coupling induces spontaneous electronic redistribution and charge polarization, which are verified by X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and density functional theory calculations, thereby providing the electronic basis for an internal electric field-assisted S-scheme charge-transfer pathway. The optimized NM@DT-3 heterostructure exhibits enhanced photocatalytic tetracycline degradation performance, achieving 90.70% removal efficiency within 180 min without external H₂O₂ addition. The core-shell configuration not only promotes interfacial charge separation but also creates a spatially confined catalytic microenvironment, enabling efficient oxygen activation and reactive oxygen species evolution coupled with localized H₂O₂ activation at adjacent Fe centers. Mechanistic investigations reveal that freely diffusing hydroxyl radicals (·OH) make only a minor contribution under the tested conditions, whereas superoxide radicals (·O₂⁻), photogenerated holes (h⁺), and singlet oxygen (¹O₂) participate in TC oxidation. In this reaction network, ·O₂⁻ acts as a key intermediate linking photocatalytic O₂ reduction to both H₂O₂ formation and a proposed h⁺-mediated ¹O₂ generation pathway. The reduced reliance on conventional bulk ·OH-dependent chemistry is consistent with the retained catalytic activity of NM@DT-3 under alkaline conditions, with a TC removal efficiency of 77.74% at pH 10. Meanwhile, the chemically integrated core-shell structure effectively suppresses iron leaching, with only 0.107 mg L⁻¹ Fe released during the photocatalytic process. This work provides new insights into engineering chemically coupled MOF/COF interfaces for regulating interfacial charge migration and ROS evolution, offering an effective strategy for constructing stable photo-self-Fenton catalysts for environmental remediation.
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LUMINESCENCE
·
2026
·Vol. 41
·期 9
·e70613
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IF 2.8
Dajie Zou,Chenyan Lu,Huye Li,Xiaohua Xu,Min Ma,Chengdangzhi Wen,Huan Wang,Jiuli Wang
Dopamine hydrochloride (DPH) is a key neurotransmitter, and its dysregulated concentration has been linked to various neurological disorders. Meanwhile, potassium permanganate (MnO 4 − ), a potent oxidant, poses significant environmental risks when discharged in excess. Therefore, sensitive detection of MnO 4 − and DPH is essential. In this work, nitrogen, sulfur, and fluorine tridoped carbon dots (N,S,F-CDs) were prepared through a hydrothermal route using Aconitum pendulum Busch extract as a biomass-derived carbon source, with thiourea and sodium fluoride serving as heteroatom dopants. The obtained N,S,F-CDs exhibited bright blue emission, good aqueous dispersibility, and a fluorescence quantum yield of 43.16%, with strong emission at 408 nm under 345-nm excitation. Upon addition of MnO 4 − , the fluorescence was efficiently suppressed owing to the combined contribution of inner-filter effect and dynamic quenching. Subsequent introduction of DPH reduced MnO 4 − and recovered the fluorescence signal, enabling the construction of an “ON–OFF–ON” sensing platform. Under optimized conditions, the sensor displayed linear responses of 5.03–275.23 μM for MnO 4 − and 6.11–371.02 μM for DPH, with detection limits of 0.25 and 0.68 μM, respectively. The method was further applied to tap water, serum, and orange juice samples with satisfactory recoveries, indicating its potential for environmental and bioanalytical detection.
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2022
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IF 6.437
Zhong-Qiu Liu,Guo-Qiang Zhang,Xin Huang,Yuan-Yuan Yu,Yu-Jing Liu,Anguo Ying
The precise synthesis of multifunctional poly(ionic liquid)s (MFPILs) featuring basic sites, mesoporous channels, and hydrophobicity continues to be a substantial challenge. Moreover, the directional conversion of lignite to monocyclic arenes (MCAs) is highly attractive but particularly challenging on account of its geometrical complexity and chemical inertness. The efficiency of lignite directional conversion to MCAs over solid bases is substantially decreased by the presence of water molecules leading to the deactivation and leaching of basic sites. Herein, the novel solid bases, i.e. , MFPILs with dibasic sites, unique hydrophobicity , and abundant mesoporous channels, were successfully fabricated by a radical multicomponent cross-linked copolymerization for the first time. Even more excitedly, the resulting MFPILs were demonstrated to be very efficient for directional catalytic hydroconversion of extraction residue from Dahuangshan lignite (DL ER ) into MCAs with 32.3 wt% yield, which is by far the highest value reported for lignite-derived MCAs by solid bases under similar conditions. The synergistic catalysis, i.e. , hydrophobic microenvironment, mesoporous confinement, and synergistic effect of dibasic sites, for active hydrogen transfer of DL ER conversion into MCAs over MFPILs is confirmed by characterization methods. The work not merely sheds substantial light on developing the novel solid bases, but also exhibits a potentially powerful catalyzing strategy to synthesize MCAs.
研究领域:
催化化学
·
高分子化学
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能源材料
·
可持续化学
·
有机转化
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2023
·
IF 5.9
Yadong Wang,Li Ma,Jun Yuan,Zongmin Zhu,Xiaoming Liu,Dengsong Li,Liqing He,Fei Xiao
The development of high-performance EP composites with high glass transition temperature (T g ), excellent flame retardancy, and UV resistance is a challenging topic in the flame retardancy community. In this work, a bio-based phosphorus/nitrogen/sulfur (P/N/S) containing flame retardant (FDI) was prepared from furfural, 2-amino-5-nitrothiazole, and DOPO. It was applied to improve the flame retardant, dielectric, and UV-resistant properties of EP. Thanks to the combination of phosphorus, nitrogen, and sulfur in FDI, the EP/FDI composites showed superior flame retardancy. Only adding 5 wt% FDI made EP achieve UL-94 V-0 flammability rating with a limiting oxygen index (LOI) of 27%. Meanwhile, EP/FDI-5% composite showed significant reduction of 65.1% and 33.6% in total smoke production (TSP) and the peak heat release rate (pHRR), respectively. The flame-retardant mechanisms of EP/FDI thermosets were investigated by residual char photographs, SEM, XPS, and Py/GC-MS. Moreover, compared to pure EP, EP/FDI composites showed excellent UV resistance, low dielectric properties, and high glass transition temperature, which was expected to be extensively used in multiple areas of production.
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 14
·4389-4397
·
IF 4
Yujun Wu,Wei Shuang,Lin Yang,Chuanbao Cao
Graphene-based materials have been regarded recently as a promising substance for electrochemical energy conversion and storage devices owing to their unique structure and extraordinary properties. Herein, an enormously facile one-step pyrolysis approach is reported for the fabrication of ternary (P,S,N)-doped graphene, which is further investigated as an efficient metal-free electrocatalyst for the oxygen reduction reaction (ORR). Furthermore, optimized ternary-doped graphene can deliver excellent ORR catalytic activity that favors the four-electron ORR process and outstanding long-term durability (90.54% current retention after 20000 s which is far superior to that of commercial Pt/C) owing to the preferable synergetic coupling effect between P, S and N. Density functional theory (DFT) calculations were performed to reveal the synergetic coupling effect between doping elements in the ORR process. This work provides an extremely simple one-step pyrolysis method for the synthesis of P,S,N-doped graphene for electrochemical energy conversion and storage devices.
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PubMed
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2023
·Vol. 38
·期 11
·2943-2957
·
IF 2.7
Sun Xiaoqin,Wang Tianyu,Yun Sining
Aurivillius phases with narrow band gaps have attracted extensive interest in the field of photocatalysis, however, they exhibit poor activity due to the low utilization of photogenerated carriers. Herein, a series of S-scheme C3N4@Bi m+1 Fe m-3 Ti 3 O 3m+3 (m = 4, 5, 6) heterojunctions with two-dimensional structures were synthesized by simple two-step method. Compared with single materials, the composites exhibit excellent photocatalytic tetracycline degradation under visible light, and 91.8% of tetracycline can be degraded accompanied with 81.2% of TOC removal within 120 min over C 3 N 4 @Bi 5 FeTi 3 O 15 . The enhanced photocatalytic performance is due to strong interface interaction, high conductivity, and efficient charge separation ability. The mechanism analysis indicates that the C 3 N 4 @Bi 5 FeTi 3 O 15 heterojunction follows an S-scheme heterojunction mechanism with a strong interfacial internal electric field directed from C 3 N 4 to Bi 5 FeTi 3 O 15 , thus, the photogenerated electrons in Bi 5 FeTi 3 O 15 move toward C 3 N 4 , which retains high oxidation ability of Bi 5 FeTi 3 O 15 and high reduction ability of C 3 N 4 to efficiently produce the reactive species, such as O 2 − · and ·OH.
Graphical Abstract
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Advanced Science
·
2022
·Vol. 10
·期 4
·2204755
·
IF 17.521
Shaoxin Cui,Hongping Wu,Zhanggui Hu,Jiyang Wang,Yicheng Wu,Hongwei Yu
Oxychalcogenides capable of exhibiting excellent balance among large second-harmonic generation (SHG) response, wide band gap ( E g ), and suitable birefringence (Δ n ) are ideal materials class for infrared nonlinear optical (IR NLO) crystals. However, rationally designing a new high-performance oxychalcogenide IR NLO crystal still faces a huge challenge because it requires the optimal orientations of the heteroanionic groups in oxychalcogenide. Herein, a series of antiperovskite-type oxychalcogenides, Ae 3 Q[GeOQ 3 ] (Ae = Ba, Sr; Q = S, Se), which were synthesized by employing the antiperovskite-type Ba 3 S[GeS 4 ] as the structure template. Their structures feature novel three-dimensinoal frameworks constructed by distorted [QAe 6 ] octahedra, which are further filled by [GeOQ 3 ] tetrahedra to form antiperovskite-type structures. Based on the unique antiperovskite-type structures, the favorable alignment of the polarizable [GeOQ 3 ] tetrahedra and distorted [QAe 6 ] octahedra have been achieved. These contribute the ideal combination of large SHG response (0.7–1.5 times that of AgGaS 2 ), wide E g (3.52–4.10 eV), and appropriate Δ n (0.017–0.035) in Ae 3 Q[GeOQ 3 ]. Theoretical calculations and crystal structure analyses revealed that the strong SHG and wide E g could be attributed to the polarizable [GeOQ 3 ] tetrahedra and distorted [QAe 6 ] octahedra. This research provides a new exemplification for the design of high-performance IR NLO materials.
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