Journal of Water Process Engineering
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2026
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IF 6.6
Kudakwashe Meki,Shiyu Meng,Zihao Liu,Zhuowen Wang,Baojian Jing,Huiqun Zhang,Peng Liu,Shan Qiu
DMS gradient improves micropore access and O₂ transport, reducing flooding. • CB-DV06 yields 750 mg L −1 H₂O₂ at >60% Electro-Fenton efficiency. • DMS-modified GDEs remove 85% RBB and reduce TOC 60% in 120 min. • Surface area reaches 222.9 m 2 /g; electroactive sites increase sixfold. • Dual-phase oxygen diffusion boosts ORR kinetics and degradation rate. Hydrogen peroxide (H₂O₂) electrosynthesis via the two-electron oxygen reduction reaction (2e − ORR) is critically dependent on the formation of stable and well-regulated triple-phase interfaces (TPIs), where gas, liquid, and catalyst converge. However, micropore flooding and uneven wettability in carbon-black gas diffusion electrodes (GDEs) often hinder oxygen transport and deactivate active sites. In this work, we address these challenges by introducing a dimethyl silicone oil (DMS) volume-gradient strategy to engineer confined TPIs within the carbon catalyst layer. Carbon-black GDEs were prepared using DMS volume-controlled of 0.4, 0.6, and 1.2 mL, with CB-DV06 identified as the optimum configuration. This design balances hydrophobicity and pore accessibility, promoting sustained oxygen diffusion and suppressing water blockage without impeding electron or ion transport. The optimized GDE (CB-DV06) achieved ~750 mg L −1 H₂O₂ after 180 min with current efficiencies exceeding 60% and enhanced electrochemically active surface area. To demonstrate the practical applicability of the in situ generated H₂O₂, Reactive Black B (RBB) degradation was employed as a model pollutant-removal reaction. The integrated system achieved approximately 85% RBB decolourisation, demonstrating the applicability of this interface-engineering strategy for pollutant-removal applications. Overall, this study highlights a low-impact approach for optimizing oxygen reduction environments in porous electrodes, advancing sustainable oxidant generation and environmental remediation. Download: Download high-res image (127KB) Download: Download full-size image
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
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IF 12.2
Fenghua Shen,Yu Zou,LeLe Liu,ZiXi Zhang,Xingyuan Yu,Chaolong Liu,Kaisong Xiang,Hui Liu
As a highly toxic heavy metal, the atmospheric thallium (Tl) emission from non-ferrous smelting has gained increasing attention, yet it still lacks a sufficient understanding of gaseous thallium purification through adsorption. Herein, we demonstrate for the first time that metal sulfides, including MoS2, CuS, and ZnS, are active in TlCl adsorption, wherein MoS2 exhibits the best activity. A crystal plane engineering strategy was proposed to fabricate the edge plane of MoS2, uncovering a critical law that the TlCl adsorption ability of MoS2 highly depends on the formation of edge sites. Edge-enriched MoS2 realizes a record TlCl adsorption capacity of 159.3 mg g–1 at 250 °C under a pure N2 atmosphere, which is two times higher than the current sorbents. Both Mo6+ and S22– are active centers for getting electrons from Tl+ and achieving the chemisorption of TlCl. Electron density difference analyses verify the stronger activity of edge Mo sites in withdrawing electrons from Tl+ than the basal S sites. MoS2 displays strong resistance to SO2 and H2O and can utilize O2 to generate Mo6+ species, which ensures its stability for TlCl adsorption under smelting gas. This work establishes metal sulfides as promising sorbents for gaseous Tl removal and introduces new insights into the design of high-performance sorbents for heavy metal control.
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ACS Sustainable Chemistry & Engineering
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2026
·Vol. 14
·期 28
·12928-12941
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IF 7.6
Mehrizi Mohammad,Zhou Li,Lv Yuze,Zhang Yi,Gao Xiu,Zhang Zhenzhou,Liu Wenqi,Tu Weifeng,Han Yi-Fan
The reverse water-gas shift (RWGS) reaction is widely regarded as a platform reaction for the conversion of CO 2 into value-added products. In this study, Fe-based catalysts modified with Cu and K were systematically investigated to elucidate the roles of metal promoters in regulating RWGS performance. The results demonstrate that a K-promoted Fe–Cu(2/3)/Al 2 O 3 catalyst exhibits enhanced CO 2 conversion together with nearly 100% selectivity toward CO. A combination of ex situ and in situ characterization techniques reveals that the introduction of Cu can enhance CO 2 conversion by modifying the surface structure and redox properties of Fe species. Subsequent K promotion also alters the surface reaction pathway by favoring the carboxylate-related route while suppressing the accumulation of formate species, which further suppresses methane formation and improves CO selectivity. These findings highlight the critical role of Cu–K synergy in tuning catalyst structure and reaction pathways for efficient RWGS reactions.
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BIORESOURCE TECHNOLOGY
·
2026
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IF 8.2
Reham Eltawab,Abdallah Abdelfattah,Zhong-Ting Hu,Liang Cheng
Conductive membranes deliver oxygen and electrical stimulation at one interface. • CNT/rGO coating preserved gas permeability and membrane hydrophobicity. • Electro-stimulation collapses the long startup bottleneck of MABRs. • Rapid biofilm establishment achieved within the first 7–10 days. • Biofilm growth rate increased by ∼ 2.5 × under low electrical input. Membrane aerated biofilm reactors offer high oxygen transfer efficiency and compact nitrogen removal; however, their practical application is strongly limited by slow and unstable startup associated with delayed biofilm establishment. In this study, a conductive gas-permeable membrane was developed by immobilizing a carbon nanotubes / reduced graphene oxide-silane nanolayer onto a Polyvinylidene fluoride substrate to enable localized electro-stimulation directly at the membrane-biofilm interface. The modified membrane preserved hydrophobicity, pore structure, and oxygen permeability while exhibiting stable electroactive behaviour. When applied in a laboratory-scale membrane aerated biofilm reactor (MABR) under low-intensity electrical stimulation, biofilm formation was significantly accelerated, achieving near-complete surface coverage and functional maturity-defined by the establishment of a stable and well-developed biofilm together with sustained ammonium removal exceeding 90%-within 7–10 days, representing a reduction of more than two weeks compared to conventional MABR startup. The biofilm growth rate increased from 7.9 ± 0.9 to 19.8 ± 1.3 µm day -1 (approximately 2.5-fold) compared to the non-stimulated control, resulting in markedly earlier chemical oxygen demand removal and complete nitrification. Response surface analysis revealed that electro-stimulation guided biofilm development toward an optimal structural configuration, characterized by near-complete surface coverage and a balanced intermediate biofilm thickness (∼120–200 µm) associated with peak treatment performance. These findings demonstrate that conductive gas-permeable membranes provide a scalable and mechanistically robust approach to overcome startup limitations in MABR systems. Download: Download high-res image (235KB) Download: Download full-size image
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Journal of Superconductivity and Novel Magnetism
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2026
·Vol. 39
·期 3
·107
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IF 1.8
Suo Hongli,Yu Chenfei,Zhang Zili,Zhou Benzhe,Wang Lei,Liu Jianhua,Wang Qiuliang
Magnesium diboride (MgB 2 ) bulks, as a superconducting material with a relatively high superconducting transition temperature, low raw material cost, absence of weak-link effects, and flexible fabrication routes, have shown great potential for applications in various fields. Among the available fabrication methods, the gas-solid method has attracted considerable attention due to its ability to significantly reduce the MgO impurity content in the samples. However, cracking is prone to occur during the gas-solid reaction process, which adversely affects the structural integrity of the bulks. The introduction of molds can effectively suppress crack formation and improve the shaping quality of MgB 2 bulks. Nevertheless, the use of molds also reduces the diffusion rate of Mg vapor, resulting in a slower reaction process and consequently lower production efficiency. In this work, the optimal sintering time for MgB 2 bulk fabrication via the mold-assisted gas-solid method is optimized, thereby reducing experimental cost. A series of MgB 2 bulk samples with sintering times ranging from 12 h to 72 h were fabricated using the mold-assisted gas-solid method. The results show that all samples are dominated by the MgB 2 phase with a small amount of MgO impurity. With increasing sintering time, the grain size gradually increases, mechanical properties such as microhardness are significantly enhanced, and electrical resistivity decreases. Meanwhile, the A f , J c , F p , and H irr are all improved. Nano-CT results reveal that Mg vapor diffuses from the exterior to the interior of the boron compact and reacts progressively. The internal defects evolve from dispersed pores at the early stage of sintering to planar cracks at later stages. Among all samples, the one sintered for 60 h exhibits the optimal comprehensive performance, indicating that 60 h is the optimal sintering time for the mold-assisted gas-solid fabrication of MgB 2 bulks. This work provides important experimental evidence and theoretical guidance for further optimization of the fabrication process, microstructural control, and performance enhancement of MgB 2 bulk materials.
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BIOMACROMOLECULES
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2026
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IF 5.9
Linlin Wang,Yunlong Sun,Lei Song,Lu Li,Yumei Gong,Rui Wang
Biobased degradable polyesters have emerged as a promising alternative to mitigate plastic pollution and reduce dependence on petroleum resources. However, the utilization of tricyclic rigid diols derived from biomass remains limited, which restricts the overall performance of degradable polyesters. In this study, a novel diglycolicaldehyde xylose (DGX) diol containing a rigid tricyclic structure, synthesized from D-xylose and glyoxylic acid hydrate, is reported. Both the single- and multiple-stereoisomer forms of DGX were polymerized with linear diacids of varying carbon chain lengths to produce biobased poly(xylosediethylene alkylenedicarboxylate)s (PXAs) and m-PXAs polyesters. The high rigidity of the single-regioisomer DGX conferred enhanced thermal properties to PXAs, with a 5% weight loss temperature (Td,5%) reaching 372 °C and a glass transition temperature (Tg) of up to 93.8 °C. The structural regularity of the PXAs polymer backbone, combined with their higher molecular weights, resulted in a higher Tg relative to the m-PXAs analogues. Furthermore, the tricyclic unit endowed the polyesters with a superior gas barrier performance. Notably, the PXD film exhibited oxygen (O2) and carbon dioxide (CO2) barrier capabilities that were 3 and 7 times greater than those of polylactic acid (PLA), respectively. All amorphous polyesters allowed efficient recovery of DGX under mild conditions, with a yield of 93% achieved, and the recycled polymers displayed properties comparable to those of the virgin materials, thus demonstrating the potential for closed-loop recycling. This work presents a viable strategy for designing high-performance, sustainable biobased polyesters with end-of-life utility.
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Journal of Cleaner Production
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2026
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IF 10.7
Zheng Zhang,Ying Yang,Jiayi Zhang,Yunyi Zhang,Xiaohan Jin,Xiaoqi Zhang,Luna Niu,He Liu,Aijun Guo
The escalating crisis of global plastic pollution underscores an urgent need for truly sustainable and closed-loop technological solutions. While chemical recycling presents a promising route, its current reliance on fossil-derived hydrogen fundamentally undermines the process's environmental rationale. Herein, an innovative cascade catalytic system is introduced that directly addresses this challenge by employing the water-gas shift reaction (WGSR) as an in-situ hydrogen source. This integrated strategy enables the efficient conversion of polypropylene (PP) waste into high-value liquid fuels (C 5 -C 22 ). The process is driven by a rationally designed bifunctional catalyst, Ni-Fe 3 O 4 /USY. The reducible Fe 3 O 4 continuously generates active hydrogen species through the WGSR, while Ni finely tunes the redox properties required for CO activation. Concurrently, the acidic sites of the USY zeolite facilitate the selective cleavage of C-C bonds in the polymer chain. The results show that the well-designed tandem reaction achieves >99% conversion of post-consumer PP waste and a remarkably high liquid fuel yield of 83.2% under relatively mild conditions (340 °C). This study establishes a green and intensified pathway for plastic valorization, fundamentally circumventing the dependency on external fossil-based hydrogen and paving the way for more sustainable chemical recycling paradigms.
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Advanced Science
·
2026
·
IF 14.1
Zesheng Chen,Yanchao Yu,Xingyuan Xiao,Wenwen Cheng,Ye Yang,Zhengyao Zhang,Wang Wang,Zhijun Zhou,Weikang Hu,Xiaolong Wang,Bing Li,Kwang Leong Choy,Yun Chen,Zijian Wang
Impaired wound healing in diabetes is closely associated with cellular ferroptosis. Microneedle-assisted gas therapy exerts molecular regulation of ferroptosis, representing a promising approach for accelerating diabetic wound healing. To date, O 2 and H 2 gas therapies have consistently been conducted independently and have never been integrated into a single system. Whether and how their synergy might be realized remains a defining challenge. Herein, we propose a concept of integrated O 2 and H 2 gas therapy, demonstrated by fabricating a gas-producing microneedle material. Platinum@MIL-101(Fe)-NH 2 @phosphotungstic acid (PMP) nanoparticles are synthesized as a visible light-driven photocatalyst for H 2 and O 2 co-evolution. The rational design of a spatially separated structure boosts their photocatalytic efficiency under physiological conditions. PMP nanoparticles are further incorporated with bilayer gelatin methacryloyl (GelMA)/PMP composite microneedles (denoted as GPM microneedles). The obtained GPM microneedles enable transdermal delivery of PMP nanoparticles for integrated O 2 and H 2 gas therapy, and demonstrate desirable biocompatibility and pro-regenerative effects. The mechanism of integrated O 2 and H 2 gas therapy has been identified as a TNFAIP3/hnRNPA1 ubiquitination/ferroptosis signaling axis, establishing for the first time a direct link to ferroptosis. In conclusion, this study yields a transformative concept and a ferroptosis-targeting microneedle material with well-defined molecular mechanism for diabetic wound management.
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ACS Applied Nano Materials
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2026
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IF 5.8
Kongfu Ou,Jinju Zheng,Jialong Zhao,Kai Wang,Xuanming Qin,Weiyou Yang,Zhentao Du,Hui Fu
Nontoxic CuGaS2 (CGS) quantum dots (QDs) are promising for next-generation displays due to their unique optical properties. However, their wide photoluminescence (PL) full width at half-maximum (FWHM), arising from intraband defect-state-mediated radiative recombination, hinders compliance with the narrow bandwidth requirements for ultrahigh-definition displays. Herein, we introduce a Ga2S3 (GaS) interlayer strategy via a hot-injection method to mitigate lattice mismatch and interface strains between the CGS core and the ZnS shell. Precisely controlling the GaS shell thickness further promotes structural ordering and suppresses sulfur vacancies (VS), thereby reducing nonradiative recombination and enhancing near-band-edge emission. Under optimized conditions, the as-prepared CGS/GaS/ZnS QDs exhibit narrow-band blue emission with a PL quantum yield (QY) of 44% and an FWHM of 24 nm, which is the narrowest value reported to date for Cu-based QDs. As integrated into solid-state light-emitting diode (LED) devices, the QDs yield narrow emission under various operating currents and demonstrate excellent operational stability. These findings highlight the critical role of multishell structures in controlling the defect states and lattice strain in CGS-based QDs, offering a design strategy for next-generation display materials demanding high color purity.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Peiran Song,Huaiwen Cang,Zhihao Zhang,Linlin Jiang,Tianmin Guan,Yong Luan,Weiguo Wang,Wei Huang,Lei Hua,Haiyang Li
Photoionization ion mobility spectrometry (PIMS) hyphenated with gas chromatography (GC) exhibits outstanding selectivity and high sensitivity in the detection of trace volatile organic compounds (VOCs). Its analytical performance is considerably affected by the interface between the GC and the ionization chamber of the PIMS. The sensitivity of the PIMS is reliant on the overlap of photoionization optical fields with the effluent from the GC, which is also affected by the gas flow in the ion mobility spectrometer. In this work, a computational model based on multiphysics dynamic convolution has been developed to evaluate the spatial concentration distribution of sample gas on the photoionization yield of PIMS. The simulation results indicate that lateral injection of GC capillary column into the gas flow of the ion mobility spectrometer could enhance the sensitivity by increasing the overlap of effluent and the VUV light in the ionization region of PIMS. The optimal capillary insert depth was increased when decreasing the carrier gas flow rate, which was confirmed by numerical simulations and experimental measurements. The optimal insert depth was 7.5 mm (the central axis of the ionization source) under conditions of a carrier gas flow rate of 15 mL·min–1, the limit of detection for aromatic compounds was reached 2.5 ppbv, achieving a 4-fold improvement of sensitivity over zero insertion. The GC-PIMS was tested to assess the VOCs emissions from spray-coated surfaces, and trace levels of toluene (45 μg·m–3) and xylene (60 μg·m–3) were still detectable even 14 days later, which highlights the potential of the GC-PIMS apparatus for monitoring trace environmental pollutants.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Wujian Zhang,Jinghua Liu,Haodong Zhao,Jian Guan,Zhenxiang Li,Keyi Mou,Yuchen Chen,Zongjian Liu,Ying Li,Aimin Chen,Haodong Tang
Synergistic air-calcination and CO-reduction tailor the interfacial structure of Ru/CeO 2 catalysts. • Abundant Ru n+ –O V –Ce 3+ interfaces enhance low-temperature WGS performance. • Ru n + sites moderate CO adsorption and oxygen vacancies facilitate water dissociation. The catalytic efficiency of Ru/CeO 2 in the water–gas shift (WGS) reaction is frequently limited by its insufficient capacity to activate water molecules, which substantially impairs low-temperature performance. In this study, an interfacial engineering strategy combining air calcination with CO reduction is developed to construct a Ru/CeO 2 -R catalyst enriched with Ru n+ –O V –Ce 3+ interfacial structures. This specially designed interface significantly enhances the activity of low-temperature WGS. Advanced characterization techniques, including XPS, TEM, Raman spectroscopy, and in situ DRIFTS, demonstrate that Ru n + species reduce excessive CO adsorption, thereby enhancing reaction selectivity. Meanwhile, oxygen vacancies facilitate water dissociation and increase the reaction rate. Consequently, the Ru/CeO 2 -R catalyst achieves an impressive CO conversion rate of 9.56 mol CO ·g Ru −1 h −1 at 200 °C. This research introduces a straightforward and controllable method for tailoring interfacial electronic structures, offering valuable insights for the rational design of highly efficient catalysts for low-temperature WGS. Download: Download high-res image (237KB) Download: Download full-size image
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International Journal of Green Energy
·
2026
·
IF 3.7
Yue Zhao,Meng Han,Chuan Tian,Jianwei Liu,Jian Pu,Jiangtao Feng,Haixia Zhong,Di Bao
Solid oxide electrolysis cells (SOECs) represent a viable technology for green hydrogen production, capable of efficiently converting renewable electricity into storable chemical energy via steam electrolysis. However, intermediate-temperature SOECs (IT-SOECs) are severely constrained by sluggish oxygen evolution reaction (OER) kinetics at the oxygen electrode surface. The insufficient OER activity decreases the electrolysis efficiency of SOECs, remaining a key bottleneck for further practical applications. To address this issue, La0.6Sr0.4Co0.2Fe0.8O3–δ-Ce0.8Gd0.2O2–δ (LSCF-GDC) nanocomposites featuring interconnected multiscale pore structures and abundant heterophase interfaces were fabricated via a facile combination of gas atomization spray pyrolysis and mechanical ball milling. The optimized NiO-GDC|GDC|LSCF-GDC(7:3) single cell achieved a high electrolysis current density of 2.95 A cm−2 at 650°C under 1.3 V with 20 vol.% steam and exhibited long-term stability during a 350 hr continuous electrolysis test with a low degradation rate of 0.0152% per hr. This work proposes a feasible structural engineering strategy for SOEC oxygen electrodes, enabling efficient and durable hydrogen production at intermediate temperatures.
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