SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Qingping Xin,Yufei Wang,Wei Huang,Shuo Li,Xingwei Wang,Jiaxin Wu,Dengdi Wu,Mengke Wang,Huiguo Wang,Ningning Gao,Xiaoli Ding,Yuzhong Zhang
Two-dimensional (2D) lamellar membranes with sub-nanometer channels hold promise for precise gas separation, but tuning interlayer spacing at the sub-angstrom scale while synergizing solution-diffusion and molecular sieving remains challenging. Here we report the confinement of an ionic liquid (IL), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]), within the galleries of few-layer Al@Ti 3 C 2 T x nanosheets to create ionic liquid-confined lamellar MXene membranes (Al@Ti 3 C 2 T x -ILLMMs). The residual Al 3+ species in the nanosheets stabilize the interlayer architecture through electrostatic interactions, while the abundant surface terminations (-F, -OH) render the nanosheets negatively charged, promoting uniform IL distribution. By precisely controlling the IL loading via an equilibration–spin-coating approach, the interlayer spacing is continuously tunable from 0.309 to 0.375 nm. The optimal channel height of 0.342 nm lies within the gap between the kinetic diameters of CO 2 (0.33 nm) and N 2 (0.36 nm), closer to that of CO 2 . This precision engineering shifts the gas transport mechanism from Knudsen diffusion to a coupled solution-diffusion and size-sieving regime. The resulting membrane achieves a CO 2 permeance of 150 GPU and a CO 2 /N 2 selectivity of 128.5, representing 4.5-fold and 109-fold improvements over the pristine MXene membrane and offering a favorable balance compared to reported IL-supported membranes. The demonstrated quantitative loading-spacing correlation provides a designable platform for sub-angstrom channel engineering in 2D material membranes.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Wenqing Wang,Fan Wu,Hao Li,Jianming Pan
A photocatalytic self-propelled nanomotor adsorbent was developed for Pd(II) recovery. • Self-propulsion overcomes diffusion-limited adsorption kinetics. • EPR reveals the ROS-mediated mechanism of long-term propulsion. • Selective Pd(II) recovery is achieved in complex acidic wastewater. The recovery of palladium (Pd) from complex acidic industrial wastewater is severely restricted by sluggish interfacial mass transfer and inherent diffusion-limited adsorption kinetics. To address this long-standing bottleneck, asymmetric N/Se-codoped resorcinol-formaldehyde nanomotors (Se-RF@NMs) were rationally fabricated via an emulsion-confined anisotropic growth strategy for photocatalytic self-propulsion-boosted Pd(II) recovey. Under light irradiation, the photoresponsive resin framework enables continuous in-situ H 2 O 2 generation. Meanwhile, the adsorption-induced in-situ reduction of Pd(II) further accelerates catalytic H 2 O 2 decomposition to generate oxygen microbubbles, endowing nanomotors with sustainable autonomous motion and dynamically promoting interfacial ion transport. EPR characterization confirms that photogenerated holes and reactive oxygen species sustain the cyclic H 2 O 2 generation-decomposition system, effectively stabilizing the self-propulsion behavior of Se-RF@NMs. Benefiting from the synergistic coupling of photocatalytic self-propulsion and N/Se-based selective coordination adsorption, the optimized Se-RF@NMs achieve a superior Pd(II) adsorption capacity of 196.75 mg g −1 , as well as excellent selectivity in multi-metal competitive systems and practical industrial wastewater matrices. This work elucidates a photocatalysis-driven active mass transfer enhancement mechanism, establishing a feasible paradigm to break the intrinsic diffusion limitation of conventional adsorption. It provides new insights into the rational design of intelligent self-propelled catalytic adsorbents for high-efficiency precious metal recovery in complex and harsh water environments. Download: Download high-res image (152KB) Download: Download full-size image
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Chemistry-An Asian Journal
·
2026
·Vol. 21
·期 14
·e70889
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IF 3.2
Jiajia Wang,Fangting Xie,Heng Lin,Ruiqing Luo,Zhiqi Ma,Duming Wei,Didan Dong,Jingru Liang,Ruiqing Zhang,Wenyu Liang,Yumei Qin,Qingmin Wei,Guangfeng Zeng
Lithium–sulfur (Li–S) batteries, despite their high theoretical capacity (1675 mAh g −1 ) and low-cost sulfur, suffer from poor cycling stability, and rate performance. This is mainly due to sluggish redox kinetics at the sulfur cathode-particularly during the Li 2 S 2 to Li 2 S conversion. In addition, uneven lithium-ion distribution and random diffusion lead to unsafe issues due to unstable lithium deposition and dendrite growth. In this study, an interlayer composed of N, S dual-doped carbon is designed to reinforcing sulfur redox electrochemistry and promoting uniform Li deposition. The NSC interlayer enhances the electrochemical performances via the formation of N … Li and S B 0 active sites, which accelerate polysulfides conversion and regulate Li deposition. As a result, the Li–S batteries with the NSC interlayer achieve an ultrahigh discharge specific capacity of 1215 mAh g −1 at 0.2C and 617 mAh g −1 at a high current of 5C. In addition, the NSC interlayer enables uniform Li deposition for over 1000 h. The work provides a facile method for designing functional interlayers and opens a new avenue for realizing Li–S batteries with high energy efficiency.
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ADVANCED MATERIALS
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2026
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IF 29.1
Jiage Yu,Wei Liu,Lu Bai,Benqiang Tian,Qingyi Zhu,Qianxi Yang,Linlin Zhou,Haoyang Wu,Yuan Wang,Boyuan Li,Xiangrong Jin,Yun Kuang,Jiazhan Li,Xiaoming Sun
CO 2 electroreduction typically requires large overpotentials to sustain high reaction rates, which at current densities approaching 1 A cm −2 inevitably intensify competition from the hydrogen evolution reaction (HER), making it difficult to simultaneously sustain high product selectivity (>95%). In this study, hollow Ni─NC (H-Ni-NC) was synthesized using nanoscale silica sphere templates and atomic Zn as a sacrificial pore-former within the carbon shell. The optimized H-Ni-NC achieves a current density of −1.0 A cm −2 with over 95% CO Faradaic efficiency in a flow cell. The high performance was attributed to the hollow sphere architecture enriched with gas-permeable through-pores. Notably, the Zn dosage selectively modulates the shell through-porosity, without altering hollow sphere macrostructure or the active-site structure, thereby enabling a systematic investigation of porosity effects. Finite-element simulations provide a qualitative framework suggesting a trade-off between reactant transport and active surface area with increasing porosity in hollow spherical catalysts. This work underscores that engineering of the nanoscale mass-transport environment surrounding active sites plays a critical role in designing high-efficiency electrocatalysts.
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JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Li Xiangqian,Chen Zhangying,Mao Zilu,Wu Dechao,Li Jiajun,Chong Huiying,Zeng Yelin,Wang Yonghong,Peng Kuan,Wu Yaohui
As a widely used antibiotic, tetracycline (TC) is a prevalent aquatic contaminant. Its environmental persistence presents substantial ecological hazards and potential health risks. This research utilized an in situ hydrothermal technique to modify Bi 2 MoO 6 (BMO) with N-doped biochar (NBC), yielding a highly efficient photocatalyst. The photocatalytic efficacy of the manufactured materials in degrading TC under visible light was evaluated by characterizing its morphology and optical properties. Experimental findings demonstrated that the ideal mass ratio of NBC in the NBC/BMO composites was 20 wt%. In 50 mL of 40 mg L −1 TC solution, 0.2 g of catalyst achieved an adsorption-photocatalytic efficiency of 86.1% after 60 min of dark adsorption followed by 120 min of photocatalytic treatment, which was 2.26 and 1.39 times greater than BMO and 20% BC/BMO, respectively. The adsorption kinetics conformed to a pseudo-second-order model, with a maximum adsorption capacity of 19.45 mg g −1 , signifying that chemical adsorption was the predominant process. The enhanced adsorption performance was attributed to N-doped effectively promoting the separation and migration of photogenerated electron–hole pairs, significantly reducing carrier recombination rates. Concurrently, the composites exhibited a pronounced visible light absorption red shift, regulating optical bandgap and markedly improving visible light utilization. Superoxide radicals (•O 2 − ) and holes (h + ) were key active species in the photocatalytic degradation of TC. After five regeneration cycles, the composites maintained high removal efficiency for TC. This research not only provides a simple preparation method for N-doped BC photocatalysts but also offers an effective and low-cost strategy for utilizing biomass resources to remediate antibiotic-contaminated water bodies. Graphical
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yuanyuan Wang,Xiaoyi Zhao,Xueai Li,Kexin Jin,Chunsheng Wang,Kesong Tian,Wanchun Guo,Yingdan Liu
A series of carbons with tunable microstructures are synthesized by controlling of micelles. • Dielectric loss is boosted by rational designed of the morphology, defects, and heteroatoms. • The three-dimensional conductive network in the entangled nanowires improves Ohmic loss. • Abundant defect and heteroatoms in carbon significantly enhance the polarization loss. • An EAB of 7.12 GHz is achieved in N-doped O-functionalized carbon nanowires. The rational design of microstructures, pores, defects, and heteroatoms in carbon that can fully exploit characteristics of structural, interfacial and dipole polarization is a significant approach to achieve enhancement of dielectric loss for broadband microwave absorption. However, it remains a dramatic challenge to get the well-designed carbon with optimal combination of these various factors due to their dependent relationships. Herein, to explore the synergistic pathways among above factors for enhancement of dielectric loss, a series of polymer-derived carbon with identifiable microstructure, defect density and heteroatom was successfully synthesized by controlling the micelle morphology and monomer elemental composition during polymerization. A greater number of unpaired electrons in N-doped O-functionalized carbon nanowires implies more effective vacancy defects for dipole polarization and doesn't hinder the formation of the electric conductive network, resulting in a high ability for dielectric loss attributed to a synergistic effect of Ohmic dissipation as well as dipole polarization and the contribution of the geometric microstructure. As a result, the defects-rich N-doped carbon nanowires exhibit a remarkable broadband response, with an effective absorption bandwidth (EAB, RL ≤ -10 dB) of up to 7.12 GHz (10.88 GHz–18 GHz, 2.62 mm) and a minimum reflection loss (RL min ) of −40.46 dB (2.12 mm). This work not only provides a facile method to synthesize carbon particles with controllable microstructure and dopant atom but also offers some constructive feedbacks for the design of carbon-based microwave absorbing materials (MAMs) to achieve broadband response. Download: Download high-res image (245KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 35
·48341-48350
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IF 7.8
Lu Chunyan,Li Mingjin,Li Wen,Deng Haoyun,Jiang Jutao,Wang Pengxi,Yang Biao,Yang Cheng,Li Xiaodong,Hu Ziyang,Zhang Wenjun
Inverted perovskite solar cells (PSCs) often suffer from inefficient electron extraction due to the intrinsically p-type nature of the perovskite surface at the electron transport layer interface. Here, we report a near-surface sulfidation strategy using dibutyl sulfide (DBS) to induce a surface p-to-n transition, which creates a near-surface electric field that facilitates electron extraction and suppresses interfacial recombination. Simultaneously, the formation of Pb-S coordination bonds passivates undercoordinated Pb 2+ defects, reducing nonradiative recombination losses. As a result, DBS-treated inverted PSCs achieve a champion power conversion efficiency of 26.28% with a high open-circuit voltage of 1.191 V. The treated devices also exhibit enhanced thermal stability, retaining 91% of their initial efficiency after more than 700 h of aging at 85 ° C in a N 2 atmosphere. This work presents a simple yet effective surface engineering approach that simultaneously enhances both the efficiency and stability of inverted PSCs.
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NANO
·
2026
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IF 1.3
Keqiang Zhu,Jincheng Wang,Xinxin Tan,Zhiyong Jia,Yun Wang,Chuang Zhang
Developing efficient and cost-effective oxygen reduction reaction (ORR) catalysts is crucial for advancing clean energy technologies. In this study, the 3D polypyrrole aerogel was synthesized using methyl orange as a soft template. The subsequent in-situ spatially confined pyrolysis ensures the atomic dispersion of Co-N x active sites while effectively suppressing metal agglomeration. The optimized CoNC-150 catalyst exhibited a high surface area (298.53 m 2 /g) and well-distributed cobalt-coordinated active sites (Co-N 4 ), significantly enhancing ORR performance. Electrochemical evaluations demonstrated an exceptional half-wave potential of 0.886 V, closely approaching that of commercial 20 wt% Pt/C (0.892 V). The catalyst followed a fourelectron transfer pathway, ensuring efficient ORR kinetics. Remarkably, this robust 3D monolithic architecture endows the catalyst with exceptional stability in alkaline media. Long-term durability tests over 40,000 cycles confirmed their remarkable stability, with only a 0.008 V loss in half-wave potential, significantly lower than the 0.022 V loss in Pt/C under similar conditions. The degraded CoNC-150 exhibited a half-wave potential of 0.878 V, significantly outperforming Pt/C (0.870 V). Kinetically, CoNC-150 exhibits a Tafel slope of 146.16 mV/dec, indicating favorable ORR dynamics. These results highlight the potential of CoNC-150 as a highly active and durable non-precious metal catalyst (NPMC) for ORR applications. This study provides valuable insights into the rational design of transition metal-based electrocatalysts, offering a promising route toward scalable and sustainable energy conversion technologies.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 4
·e70709
·
IF 4.2
Quanwei Jiang,Zhibin Chen,Zhen Tian,Jianbo Li,Xiaowei Shi,Huijun Kang,Zongning Chen,Enyu Guo,Tongmin Wang
Calcium titanite, as an eco-friendly thermoelectric material, offers great potential for thermoelectric power generation. However, the polar metal–oxygen bonds place a low ceiling on the electrical conductivity, thereby limiting the overall thermoelectric performance. In this work, high-purity Ca 1- x Pr x Ti 0.95 Nb 0.05 O 3 ( x = 0–0.20) compounds are synthesized to investigate the electrical and thermal transport features. Nb doping enhances bond covalency, as confirmed by electron localization function (ELF) and crystal orbital Hamilton population (COHP) analyses. This enhancement leads to high carrier mobility by weakening the electron–phonon coupling, a mechanism verified by direct electron–phonon coupling calculations. Meanwhile, the multiscale hierarchical architectures, including dual point defects, nanoprecipitates, dislocations, etc., originating from the large mass and strain field fluctuations, further reduce the lattice thermal conductivity close to the minimum value estimated from Cahill's model. A peak ZT value of 0.33 is acquired for Ca 0.90 Pr 0.10 Ti 0.95 Nb 0.05 O 3 at 1073 K, approximately 267% higher than that of the pristine CaTiO 3 sample. Our investigation highlights that weakening the carrier–phonon coupling by modulating chemical bonding is a reasonable strategy, which could be applied in other thermoelectric systems.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Doudou Li,Xingyu Zhou,Yu Feng,Weiwei He,Lifen Zhang,Zhenping Cheng
The search for innovative and cost-effective flame-retardant polymers is attracting increasing interest in both the academics and industrial community. In this work, flame-retardant polymers with high performance are developed through a monomer-to-polymer strategy. Specifically, biobased N–P synergistic vanillin-based acrylate monomers (MAPDVAs) are designed and synthesized, which are then polymerized via reversible addition–fragmentation chain transfer (RAFT) polymerization to obtain a biobased polymer, namely, PMAPDVA. The obtained PMAPDVA (Mn,GPC = 39100 g/mol) has a high residual carbon content of about 42.0 wt % at 800 °C. The peak heat release rate (PHRR) of PMAPDVA is only 62.0 W/g in a micro calorimeter (MCC) test, confirming excellent flame-retardant efficiency. The PHRR and the total heat release rate (THR) of poly 2-ethylhexyl acrylate (2-EHA) decreased by 33.8% and 42.7%, respectively, when 30.0 mol % MAPDVA was copolymerized. In addition, the copolymer coatings display light transmission more than 80% in the range of 380–780 nm, indicating fine transparency of the copolymer and satisfying compatibility of PMAPDVA. Finally, scanning electron microscopy (SEM) and thermogravimetric analysis infrared (TGA-IR) are applied to explore the flame-retardant mechanism of the resultant polymers. This work provides a key clue for the preparation of flame retardants from natural products.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Sain Bux Jamali,Tauqeer Haidar Qamar,Sibt ul Hassan,Abdullah Ali Alansi,Ijaz Ahmad,Shakeel Ahmad,Shengxiang Huang,Lianwen Deng
Growing health concerns over electromagnetic radiation necessitate the effective microwave-absorbing materials with lightweight and excellent performances. In this study, trimetallic FeCoNi nanoparticles embedded in N-doped porous carbon foams, as FeCoNi@NPCFs were successfully synthesized via polymer bubbling technique for microwave absorption. By adjusting the ratio of polyvinylpyrrolidone to metal nitrates, the electromagnetic wave absorption performance was effectively enhanced. Benefiting from the synergistic interaction between magnetic and dielectric loss components, the optimized composite exhibits outstanding microwave absorption performance, with reflection loss (RL) of −45.12 dB and effective absorption bandwidth (EAB) of 4.91 GHz. Furthermore, the practical microwave absorption performance was evaluated using computer simulation technology (CST). This work demonstrates a scalable one-pot fabrication strategy for advanced microwave absorbers, offering promising solution for electromagnetic interference shielding in modern electronic and communication systems.
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JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2026
·
IF 2.6
Song Ruili,Miao Xianhua,Fan Jikai,Ni Cong
The primary limitations of the oxygen evolution reaction (OER) electrocatalysts stem from poor electrical conductivity and insufficient accessibility of active sites. So highly productive catalysts are vital to lower the overpotential and enhance the kinetics of the sluggish OER. In this work, we present an effective OER electrocatalyst (NiS/N-CNT@Ni) and composites of Ni nanoparticles encapsulated in NiS/N-CNT fabricated via a simple two-step thermal treatment method. Meanwhile, due to the synergistic effect between NiS and nitrogen-doped carbon nanotubes (CNTs) and Ni, the NiS/N-CNT@Ni composites show higher OER electrocatalytic activity and better durability than commercial RuO 2 catalysts. Compared to commercial RuO 2 , the NiS/N-CNT@Ni catalyst demonstrates a lower overpotential (313 mV at 10 mA cm −2 ) and better stability. This study confirms that the NiS/N-CNT@Ni material not only exhibits a low overpotential but also presents a scalable, cost-effective synthesis strategy for high-performance composites applicable to energy conversion and storage.
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