Journal of Water Process Engineering
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2024
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IF 6.3
Can Cai,Longfei Gao,Yuzhu Xiong
In this work, Fe 3 O 4 magnetic particles were in-situ grown on the surface of Montmorillonite (MTT) via co-precipitation method, and a green, recyclable chitosan (CS)/carboxymethyl cellulose (CMC)/sodium alginate (SA)/MMT-Fe 3 O 4 double network (DN) hydrogel (C-M-SD/MMT-Fe 3 O 4 ) was successfully synthesized. The magnetization of MMT-Fe 3 O 4 addition improved the maximum compressive strength of CS/CMC/SA double network hydrogel (C-M-SD), reaching 17.13 kPa. The adsorption capacities of the magnetized DN hydrogel for methylene blue (MB) and Cu 2+ were 224.49 mg/g and 121.15 mg/g, respectively. Moreover, cytotoxicity tests using CCK8 solution showed that the cell activity was >80 % after 24 h culture in the prepared hydrogel extracts, which demonstrated that the prepared hydrogel adsorbent did not release any toxic substances into the water source throughout the adsorption process . It can be concluded from the Vibrating Sample Magnetometer (VSM) that the saturation magnetization of the prepared magnetic double-network hydrogel reaches 15 emu/g and the coercivity is 0, showing the superparamagnetism . The synthesized C-M-SD/MMT-Fe 3 O 4 hydrogel possesses excellent mechanical properties, natural degradability, recyclability and biocompatibility, making it an ideal candidate for wastewater treatment applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Linkun Liang,Xueping Zheng,Yifang Yao,Shenglin Liu,Jianzhong Wang,Wenshuai Liu,Chunxu Hu,Yuxuan He
In the context of hydrogen energy development, hydrogen production technology based on the hydrolysis of sodium borohydride (NaBH 4 ) has attracted considerable attention owing to its mild reaction conditions and the high-purity hydrogen generation. Nevertheless, the intrinsically sluggish hydrolysis kinetics of NaBH 4 require the development of non-noble metal catalysts that simultaneously achieve high catalytic activity and excellent durability. In this work, a molybdenum-doped cobalt hydroxide (MoO 2 -Co(OH) 2 ) catalyst was fabricated via a homogeneous urea precipitation approach, and its catalytic performance for H 2 generation from NaBH 4 hydrolysis was systematically evaluated. Concurrently, SEM, TEM, and XPS characterizations collectively elucidated the reaction pathway and electronic modulation mechanism involving Mo-doping-induced Co 2+ oxidation and oxygen vacancy generation. Additionally, this study demonstrates that the composite material possesses favorable surface hydrophilicity and exceptional synergistic catalytic activity. Through systematic modulation of the Mo/Co molar ratio, the MoO 2 -Co(OH) 2 catalyst achieved an exceptional hydrogen generation rate (HGR) of 9831.46 mL·min −1 ·g −1 at ambient temperature, concomitant with a markedly reduced activation energy (38.81 kJ·mol −1 ) relative to pristine Co(OH) 2 (68.97 kJ·mol −1 ). Furthermore, the catalytic performance of this system is comparable to, or even superior to, that of state-of-the-art Co-based catalysts. The superior catalytic performance was ascribed to the synergistic contributions of abundant defect sites afforded by the amorphous architecture, the intrinsically enhanced activity stemming from the electronic structure modulation, and the enhanced stability endowed by the compact microstructure.
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JOURNAL OF CHROMATOGRAPHY A
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2026
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IF 4
Min Zhou,Rusen Miao,Xiaoxu Chen,Anqi Wang,Xueman Wei,Initizar Anwar,Yuefei Wang,Hongyan Wang,Fei Tian
A hydrophilic SUPRADES was constructed for selective extraction of isoflavone from P. lobata root. • The SUPRADES achieved 70.4 mg/g puerarin, 1.33–5.33-fold higher than conventional methods. • Selective extraction mechanism was elucidated by FT-IR, ¹H NMR, and DFT theoretical calculations. • The SUPRADES retains >97% extraction capacity over 7 cycles with superior batch reproducibility. • GAPI evaluation verifies the eco-sustainability of the entire isoflavone extraction process. Supramolecular deep eutectic solvents (SUPRADES) have are promising green extraction media for the sustainable extraction of bioactive compounds from plant materials. In this study, a combined strategy of SUPRADES with ultrasound-assisted extraction (UAE) was developed for the efficient extraction and enrichment of isoflavones from the root of Pueraria lobata. The extraction process was systematically optimized using single-factor experiments followed by Box–Behnken design (BBD) response surface methodology. The optimal SUPRADES system consisted of L‑proline and urea at a 1:2 molar ratio, supplemented with 5 wt% β‑cyclodextrin and 30 wt% water. Under these conditions, the yield of puerarin reached 70.4 ± 0.6 mg/g, which is 1.33‑ to 5.33‑fold higher than those obtained with conventional methods. The self‑assembled structure of the SUPRADES and its molecular‑level interaction mechanism with isoflavones were further elucidated by FT‑IR spectroscopy, ¹H NMR spectroscopy, and density functional theory (DFT) calculations. These results confirmed that the extraction process is synergistically driven by hydrogen bonding and β‑cyclodextrin‑mediated host–guest complexation. GAPI evaluation demonstrated the excellent environmental friendliness and sustainability of the established method. Collectively, this study provides a novel and efficient extraction strategy for isoflavones from Pueraria lobata root and offers a theoretical basis for green the extraction of natural products in traditional Chinese medicine. Download: Download high-res image (408KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Hongwei Cai,Xiaoxiao Pan,Cong Li,Hao Luo,Menghan Lin,Mingyi Shang,Jiqiong Lian,Yanan Fu,Hongjun Yue,Huixin Chen,Xiaolong Li,Yujin Tong,Mi Lu
A synergistic strategy of alkaline etching and nitrogen lattice occupation is proposed. • The constructed gentle gradient structure achieves dual optimization of the kinetic process and reaction sufficiency. • The F-RG-US/M exhibits 871 mA h g −1 at 0.1C with 87.8% retention at 20C. A higher F/C ratio leads to poor conductivity of the fluorinated carbon (CF x ) material, resulting in slow kinetics of the lithium‑fluorine reaction and thus hindering its application in special fields such as high-power energy storage. By designing and constructing a new type of CF x structure, it is of great significance for improving the rate performance of Li/CF x batteries. Herein, a synergistic strategy of alkaline etching and nitrogen lattice occupation is proposed to construct a CF x material (F-RG-US/M) with a gentle gradient defluorination. NaOH achieves gradient defluorination, forming a gentle step-like gradient structure in the material. This structure provides abundant Li + diffusion pathways while maintaining a reasonable F/C ratio to ensure specific capacity. Urea alters the distribution of electron clouds through nitrogen doping, enhances conductivity, and modulates the chemical environment of adjacent C F bonds. MWCNTs form an elastic conductive network, which further accelerates the transmission of electrons and ions. Consequently, F-RG-US/M exhibits outstanding electrochemical performance, delivering a specific capacity of 765 mA h g −1 with 87.8% capacity retention at a high rate of 20C. This work not only enables a sustainable upgrading and closed-loop recycling route for spent graphite but also provides a viable pathway for the industrial deployment of high-power CF x cathodes. A synergistic strategy of alkaline etching and nitrogen lattice occupation is proposed to construct a CF x material with a gentle gradient defluorination. This approach enables closed-loop recycling of spent graphite and offers a practical route for the large-scale industrial application of power type CF x materials. Download: Download high-res image (169KB) Download: Download full-size image
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Journal of Energy Storage
·
2026
·
IF 10.7
Xinyu He,Min Du,Wanqing Wu,Dedi Zhou,Yihang Zhao,Haokun Shi,Qinggong Zheng
In recent years, with the development of electric vehicles and electric vessels, the issues of battery thermal safety have garnered significant attention. Composite phase-change materials (CPCMs) hold great potential as passive cooling systems in battery thermal management systems (BTMS), but their high flammability remains an unresolved challenge. This study successfully developed a flexible composite phase-change material, CPCM/P-CSF@rGO, by encapsulating a eutectic phase-change material composed of mannitol and galactitol in a three-dimensional hydrogen-bonded network, self-polymerised by phosphated corn straw cellulose (P-CSF) and reduced graphene oxide (rGO). The study demonstrates that the strong hydrogen bonding network formed between the phosphate groups introduced by phosphoric acid modification and rGO constructs highly efficient thermal conduction pathways, achieving a thermal conductivity of 1.039 W/(m•K) and significantly accelerating thermal response rates. Simultaneously, the incorporation of the P-CSF@rGO framework endows the material with excellent flexibility and shape stability. Due to the in-situ flame-retardant modification of the framework, the phase-change material maintains a high latent heat of phase-change (194.7 J/g) and achieves superior flame retardancy through gas-phase and condensation-phase mechanisms. It exhibits a limiting oxygen index of up to 30.64% and rapidly extinguishes itself when exposed to open flame in atmospheric conditions. Thus, the flexible composite phase-change material (CPCM/P-CSF@rGO) supported by a phosphorylated cellulose framework emerges as a promising candidate for ensuring safety and high performance in thermal management applications.
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Journal of Energy Storage
·
2026
·
IF 10.7
Yu-Han Yuan,He-Jie Wu,Jia Liang,Hai Huang,Gui-Fang Li,Jin-Wei Yan,Shuang-Lin Cai,Yong-Qi Ye,Ye Zeng,Ming-Ming Tao,Xiao-Hong Fan,Yi Li,Ding-Rong Deng,Qi-Hui Wu
Driven by the global push for sustainable energy, supercapacitors are regarded as competitive energy storage systems. Nevertheless, boosting their energy density and cycling durability remain core challenges. Herein, a La 2 O 3 /Al 2 O 3 heterostructure (La-Al-O) is in-situ fabricated on nickel foam (NF) via a hydrothermal route. Electrochemical activation converts crystalline La 2 O 3 into amorphous La 2 O 3 , triggering structural reconstruction: interwoven nanosheet networks evolve into loose, crumpled nanosheets. This transformation enriches oxygen vacancies and generates Ni(OH) 2 on NF to create abundant ion-accessible active sites, while Al 2 O 3 serves as a structural stabilizer against framework collapse (activated La-Al-O, abbreviated A-La-Al-O). In terms of electrochemical performance, the A-La-Al-O/NF electrode exhibited a high specific capacitance of 4.60 F·cm −2 at a current density of 5 mA·cm −2 . After 20,000 cycles at a scan rate of 20 mA·cm −2 , the cycle retention rate was 75.7%. For the assembled asymmetric device (denoted as A-La-Al-O/NF/activated carbon (AC)), an energy density of 49.41 Wh·kg −1 was achieved at a power density of 889.38 W·kg −1 , with a cycle retention rate of 82.5% after 20,000 cycles. This study adopts method combining hydrothermal and electrochemical activation without the need for binders, featuring a simple and convenient process. It provides a new insight for the high-value utilization of rare earths and the development of high-performance supercapacitors.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Wang Lv,Shangkai Qiu,Lu Xiong,Zhiyong Yan,Hou Wang,Yan Wu
Mo 4d-S 3p orbital hybridization effectively reshapes the electronic band structure. • Sulfur vacancies shift from recombination centers to efficient charge-transfer channels. • Mo S Ni bridging orbital channels establish a robust built-in electric field. • Mo–Ni orbital synergy enables a highly selective 2e⁻ oxygen reduction pathway. This work addresses the fundamental dilemma between charge separation efficiency and surface reaction selectivity in heterogeneous photocatalysis through synergistic orbital engineering. By introducing Mo dopants and sulfur vacancies (V S ) into Zn 3 In 2 S 6 , the localized electronic states of isolated V S are transformed into delocalized charge channels via strong Mo 4d-S 3p orbital hybridization. This orbital-level modulation effectively suppresses charge recombination while optimizing the band structure for visible-light absorption. Coupled with in-situ grown Ni 4 S 3 , an interfacial Mo-S-Ni orbital bridge is constructed, which not only establishes a robust built-in electric field to direct electron flow toward Ni 4 S 3 but also tailors the local coordination environment for selective two-electron oxygen reduction. The resulting heterojunction photocatalyst achieves an exceptional H 2 O 2 production rate of 163.0 ± 2.1 μM h −1 in pure water without any sacrificial agent. Notably, the H 2 O 2 production rate of 252.1 ± 2.4 μM h −1 is attained at a tetracycline hydrochloride (TC) concentration of 20 mg L −1 , 1.5 times higher than that in pure water. This study demonstrates that precise orbital coupling can integrate carrier dynamics management with reaction pathway control, providing a new design paradigm for noble metal-free, high-performance and multifunctional photocatalytic systems. Download: Download high-res image (216KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Guoyu Li,Nana You,Chenglei Huang,Mengde Huang,Shijing Song,Chengyu Yu,Yuanyuan Xu,Hao Nie,Guangbing Zhao,Hanwu Lei,Junchao Ren,Fang Wang,Qingfa Zhang
Constructing sustainable hydrogel systems with simultaneous excellent mechanical properties, stable electromechanical response, and efficient electromagnetic attenuation is still a challenge. Herein, an all-biomass multifunctional composite hydrogel was developed based on a dual-protein network composed of silk fibroin (SF) and wool keratin (WK). Tannic acid (TA) was introduced as a dynamic crosslinker to reinforce intermolecular interactions, while highly graphitized carbon nanosheets (HGCN) derived from wheat straw were incorporated as conductive fillers to establish an interconnected electron transport pathway. The results revealed a composition-dependent trade-off between mechanical strength and multifunctional performance. The 30% GC-WKSF hydrogel exhibited the highest tensile strength of 757.0 kPa along with excellent adhesion and a self-healing efficiency of 91.81%. Increasing the HGCN content to 40% led to enhanced electrical conductivity (0.61 S·m⁻¹), strain sensing performance (gauge factors of 0.46 and 0.72), and electromagnetic interference (EMI) shielding effectiveness (30.84 dB in the X-band) indicating a favorable balance between conductivity and multifunctionality. This work provides fundamental insights into the synergistic mechanisms between biomass-derived carbon fillers and dual-protein networks and offers a sustainable strategy for designing biomass-based multifunctional hydrogels for flexible electronics, wearable sensors, and electromagnetic protection applications. Download: Download high-res image (351KB) Download: Download full-size image
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Xiaoyun Zhang,Benyong Gao,Tao Qin,Jinlong Ma,YiXue Xu,Lili Song,Muxin Liu
Spherical Ru-NiCo 2 O 4 synthesized by hydrothermal-calcination formed Ru-O-Co/Ni bonds to enhance metal-support interaction. • The nanowire-assembled ball-like structure exposed abundant active sites and accelerated mass transfer. • Metal-support interaction effect optimized electronic structure, downshifted d-band center, and regulated intermediate adsorption. • Ru-NiCo 2 O 4 exhibited outstanding OER activity with an overpotential of 217 mV at 10mA/cm² and durable stability over 70 h. Hydrogen production by water electrolysis is a promising approach for renewable energy conversion, yet its efficiency is severely restricted by the sluggish oxygen evolution reaction (OER). Ru-based catalysts exhibit outstanding OER activity but suffer from poor stability and high cost. Constructing metal-support interaction (MSI) is an effective strategy to optimize the electronic structure and stability of Ru catalysts. Herein, fluffy spherical Ru anchored on NiCo 2 O 4 was fabricated via hydrothermal and calcination processes, in which Ru O Co/Ni bridge bonds were formed to strengthen the MSI effect between Ru nanoparticle and NiCo 2 O 4 support. The unique nanowire-assembled ball-like structure exposed abundant active sites and accelerated mass transfer. The MSI effect regulated the electronic structure, derived directional interfacial electron transfer, downshifted the d-band center, and optimized intermediate adsorption for OER. The synthesized Ru-NiCo 2 O 4 catalyst exhibited an overpotential of 217 mV at the current density of 10 mA/cm 2 and a long-term stability of 70 h.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Dongfeng Sun,Yu Kang,Junwei Wang,Luo Huang,ShuKai Ding,Guohui Dong,Yanning Qu,Yuan Yu
Ammonia synthesis via photocatalytic nitrogen fixation is regarded as a green and sustainable alternative to the conventional Haber-Bosch process. Nevertheless, its practical application is greatly hindered by the chemically inert N N triple bonds and slow reaction kinetics. In this work, a Cu-doped TiO 2 /g-C 3 N 4 composite with a well-defined type-II heterojunction was synthesized through a facile wet-chemical method integrating low-temperature crystallization and in-situ molecular assembly. Characterizations confirm that Cu-TiO 2 nanoparticles are evenly immobilized on g-C 3 N 4 nanosheets, which effectively suppresses nanoparticle aggregation. On the one hand, Cu doping tunes the band structure of TiO 2 and introduces abundant oxygen vacancies, greatly promoting the adsorption and activation of N 2 molecules. On the other hand, the formed type-II heterojunction establishes an internal electric field, which broadens light response and accelerates the separation and migration of photogenerated charge carriers. Benefiting from the synergistic effect of Cu doping, oxygen vacancies and type-II heterojunction, the optimal Cu-TiO 2 /g-C 3 N 4 (CuTCN-2) achieves an outstanding NH 3 evolution rate of 91.14 μmol·g −1 ·h −1 with a quantum yield of 1.75% at 420 nm under simulated solar illumination. The activity is 7.6-, 3.4- and 34.1-fold higher than that of bare TiO 2 , single Cu-TiO 2 and pristine g-C 3 N 4 , respectively. This work reveals that the co-regulation of heteroatom doping, defect engineering and heterojunction construction can remarkably boost photocatalytic kinetics. It also provides a feasible design principle for high-performance photocatalysts toward solar-driven nitrogen fixation.
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2026
·Vol. 37
·期 7
·e70673
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IF 3.8
Bochao Pan,Jingyuan Xu,Donglin Tang
Biobased fibers have gradually gained attention with the development of fiber industry due to the characteristics of renewability and environmentally friendliness. For polyureas derived from urea and biobased diamine, the excellent properties such as high strength, high toughness, and rapid crystallization, offer them great potential in the construction and application of fiber materials. It is in this work aiming at constructing high-performance polyurea fibers, taking the problems of poor pulverizability and high melt viscosity into account. A three-step process, including prepolymerization, reactive extrusion, and drawing, was proposed and accomplished to conduct fiber formation for the polyurea. Prepolymerization was carried out via melting polycondensation from urea and 1,10-diaminodecane. The oligomer obtained was then able to be crushed into particles for extrusion. The reactive extrusion in which chain extension took place was conducive to increasing the molecular weight ( M n = 23.2 kg/mol). The obtained fiber was then further drawn at 160°C to increase the crystallinity and as a result, to increase the strength. A reorganization of crystal structure for the drawn yarn can be observed and improved crystallinity was detected. The tensile strength is found to be increased from 45 to 600 MPa after drawing, while the modulus is found to be from 1.1 to 5.9 GPa. It is concluded that the difficulties in the processing and formation of polyurea fiber have been solved in this study. Such technique developed here expands the application fields of polyurea materials and provides a new option for the development of high-performance biobased fibers.
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CEMENT & CONCRETE COMPOSITES
·
2026
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IF 14.4
Daojian Su,Guihang Yu,Zhiyao Yu,Changhong Yang,Xiuqiang Wang,Jean Jacques Kouadjo Tchekwagep,Haijun Guo,Shifeng Huang,Xin Cheng,Zhenxiang Cheng
Tailored pore network FPCE was designed as the electrolyte for FCS. • Cement-PA-KOH-AM20 integrates good electrochemical performance with outstanding mechanical flexibility. • Operates reliably at −10-65 °C, resists damage, provides 7 °C insulation, and retains performance after 6 months outdoors. • Powers LEDs, phones, displays, and fans even under bending or twisting. Cement-based supercapacitors are emerging as key enablers of the green transition, unifying the widespread infrastructural presence of cement with the ability to store electrical energy. However, their inherent rigidity has hindered integration into irregular, free-form architectural surfaces. Here, we report the first flexible cement-based supercapacitor, which combines high electrochemical performance with exceptional mechanical adaptability. The device employs a cement-composite electrolyte engineered with a tailored network of mesopores and capillary pores, achieving an ionic conductivity of 35.28 mS cm −1 alongside a low Young's modulus of 81.6 MPa. In an asymmetric electrode configuration, the supercapacitor delivers an areal capacitance of 215.3 mF cm −2 , an energy density of 76.55 μWh cm −2 , and a power density of 726.95 μW cm −2 , with 83.3% capacitance retention over 2000 cycles. It operates reliably from −10 to 65 °C, withstands mechanical damage without failure, provides a 7 °C thermal insulation benefit, and shows negligible performance loss after six months outdoors. Capable of efficient solar energy storage, it can power small electronic devices such as LEDs, a mobile phone, and fans even when bent or twisted. This work demonstrates a versatile, deformable energy-storing cement, paving the way for multi-function building materials in next-generation free-form architecture.
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