CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yang Zhang,Peng Lu,Chi Feng,Xuhua Zheng,Pengbo Hu
Benzene (C 6 H 6 ) is a typical gaseous pollutant in newly-decorated buildings, which is harmful to people's health. For fast and complete purification of C 6 H 6 , photocatalysis has been widely applied. However, effectively purifying low-concentration but still detrimental C 6 H 6 remains troublesome. To address this issue, this study aims to investigate the commonly-detected concentration of C 6 H 6 and prepares germanium & graphene quantum dots-doped titanium dioxide (Ge-GQDs/TiO 2 ) via the hydrothermal impregnation method for its purification. In the meantime, density functional theory (DFT) calculations are used to uncover the microscopic mechanisms in the above experiments. The characterization results reveal that replacing Ti 4+ with Ge 4+ generates lattice distortion (thereby producing oxygen vacancies and Ge-O-Ti for wider visible-light absorption) and functional groups of dopant GQDs achieve π → π ⁎ conjugation (thereby preventing nanoparticle aggregation and constructing hierarchical porosity). The experimental results demonstrate that 0.2 wt% Ge-0.3 wt% GQDs/TiO 2 achieves 100 % purification efficiency of 15 ppm C 6 H 6 within 2 h at 25 °C and RH 5 % with its losses being less than 15 % after 20 purification-regeneration cycles. The DFT calculation results disclose that doping of both Ge and GQDs enhances the adsorption intensity of C 6 H 6 and lowers the transition-state (TS) energy barriers of first-order decomposition of C 6 H 6 , making the purification process easier. This study provides a systematic comprehension of low-concentration C 6 H 6 purification in buildings.
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高影响因子
BMC Chemistry
·
2025
·Vol. 19
·期 1
·1-14
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IF 4.6
Zhang Qiuyun,Li Xingxin,Wu Hanhong,Xu Nian,Chen Liangfu,Chen Lianlian,Deng Taoli,Ma Juan,Zhang Yutao
Metal-organic frameworks (MOFs) are promising heterogeneous catalysts or catalyst support materials for biodiesel production due to their high surface area, tunable porosity, and diverse morphology. However, developing bimetallic MOFs that combine easy scalability, high stability, and good catalytic activity that are beneficial for large-scale synthesis and applications is still highly desirable. Herein, a fascinating bimetallic Bi/Ce-MOFs (Bi/Ce-BTC) supported heteropolyacid (HPMo) was constructed by a simple hydrothermal synthesis strategy, and its catalytic performance was evaluated in the esterification of oleic acid. A comprehensive characterization of the composite material’s structure, composition, and properties was performed using various techniques (XRD, FTIR, N 2 physisorption, SEM-EDS, TG, NH 3 -TPD, Py-FTIR, and XPS). These characterization techniques thoroughly confirm the successful impregnation of HPMo on the Bi/Ce-BTC, and it possesses a relatively large specific surface area, meso-porosity, high acidity capacity, and synergistic catalytic effect between the substrates. Catalytic experiments demonstrated that HPMo@Bi/Ce-BTC exhibited the best catalytic performance, achieving 92.7% conversion of oleic acid under optimal reaction conditions. Remarkably, the catalyst could be easily reused six times with an acceptable oleic acid conversion (79.3%). In addition, the kinetic analysis of the esterification reaction by HPMo@Bi/Ce-BTC catalyst showed pseudo-first-order kinetics, with activation energies found to be 60.9 kJ/mol. Overall, the employment of bimetallic MOFs for impregnation of active species paves a potential way for broad applications in sustainable chemical processes. Graphical abstract
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PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2025
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IF 8
Qiang Liu,Guangye Tu,Meng Wu,Guodong Xu,Jianming Gao,Yunsheng Zhang,Cheng Liu
The utilization of metallurgical slag for the partial substitution of clinker to produce blended cement is an effective approach for the harmless and resourceful disposal of industrial solid waste. Nevertheless, the influence of metallurgical slag on the solidification behavior between clinker minerals and heavy metals remains unclear in blended cement. In this study, the blended cement is composed of cement, synthetic amorphous phase (eliminating the influence of physical-chemical characteristics of different metallurgical slags), and different levels soluble Mn. The study applied various characterization methods focusing on the solidification behaviour of Mn in the hydration process of blended cement. The results reveal that Mn exhibits a dual effect on the reaction of C 3 S, with the appearance time of the main peak in the hydration heat curve extending from 10 h to 17 h (when Mn dosage reaches 0.9 wt%). However, with the increase of Mn, the main peak appeared early at 5.6 h. The primary inhibitory factor for the C 3 S hydration reaction is Mn-bearing hydrate phases on the surfaces of cement particles. However, when the soluble Mn content exceeds a certain threshold (2.7 wt% in this study), the clinker reaction is enhanced due to the formation of additional nucleation sites by Mn-hydrate precipitates. Mn is predominantly solidified within the gel-like hydration products and ettringite through lattice confinement and physical encapsulation. The introduction of Mn promotes the formation of ettringite-like products. This reaction consumes gypsum and thus accelerates the secondary hydration of C 3 A. The improved hydration kinetics model is employed to reveal the hydration mechanism of blended cement containing Mn. The hydration process of blended cement follows a diffusion-controlled behaviour, which is influenced by the Mn-precipitation layer. These findings provide comprehensive insights into reaction kinetics and the solidification of heavy metals, contributing to the sustainable application of metallurgical slag in the environment.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Longlong Jiang,Yanjun Li,Donghua Liu,Yue You,Jin Chen,Donghai Ding,Guoqing Xiao
Aiming to prepare high performance zirconia fibers efficiently, a novel yttria-alumina co-doped zirconia (YADZ) fiber with improved flexibility, outstanding thermal stability and insulation performance was fabricated by centrifugal spinning. High efficiency for preparing ceramic fiber was achieved by the centrifugal spinning, in which the spinnable solution was dropped into rotating spinning disc. The zirconia was stabilized as the t-ZrO 2 and the grain size was decreased, because of the co-doping of yttria and alumina. The cyclic loading and thermal insulation tests indicated that the YADZ fibers has excellent compression resilience, high temperature resistance and thermal insulation performances. This work provides a feasible measure for the fabrication of zirconia fibers high efficiently with improved performance that can be applied to thermal insulation.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Tie Ye,Zhenyu Gao,Yong Qin,Zheng Ren,Yi Wang
The development of efficient bifunctional electrocatalysts capable of driving both hydrogen and oxygen evolution reactions (HER/OER) remains a critical task for renewable as well as sustainable water decomposition systems. Herein, we presented an electrocatalyst comprising cobalt sulfide (Co₃S₄) circular nanosheets decorated with trace platinum (Pt) nanoparticles, directly grown on nickel foam (Co-S-Pt@NF). Through synergistic integration of uniformly dispersed Pt and sulfur-rich coordination environments, the catalyst achieved exceptional dual-functional activity in alkaline medium (1 M KOH). The overpotentials of Co-S-Pt@NF at 100 mA cm - ² current density were 68 mV (HER) as well as 353 mV (OER), respectively, exceeding those of Pt-C@NF as well as Ru-O@NF. The density functional theory (DFT) calculations were conducted to investigate mechanism. When Co-S-Pt@NF was adopted as two electrodes in an electrolyze for overall water decomposition, the system could provide 100 mA cm - ² at a low cell voltage of 1.59 V and maintained stable efficiency operation in the 1 M KOH solution for 100 h. This work provided a potential example for the design of cost-effective and high activity “trace precious metal + transition metal supports” bifunctional catalysts.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Ruixue Sun,Lubin Hua,Qingqing Jia,Xiaojing Kang,Lianpeng Lv,Yichang Li,Hui Si,Chao Zhang,Hailiang Yang,Yang Zhou,Bing Wang
Ancient leather artifacts provide critical insights into prehistoric and historic clothing and leatherworking techniques. However, their accurate detection and species identification remain challenging due to material degradation and environmental contamination. In this study, a high-performance photoelectrochemical (PEC) immunosensor was developed based on MoS₂/NiCo₂O₄-Ag@CoFe₂O₄ nanocomposites for the highly sensitive and specific analysis of archaeological leather. The immunosensor leverages a MoS₂/NiCo₂O₄ heterostructure for optimized energy band alignment and incorporates plasmonic Ag@CoFe₂O₄ nanocomposites to facilitate electron transport, significantly enhancing photoelectric conversion efficiency. A sandwich-type signal amplification strategy was employed, achieving an ultra-low detection limit of 0.1034 pg/mL (S/N = 3) and a broad linear range of 10⁻³–10² ng/mL, representing a two-order-of-magnitude improvement in sensitivity over conventional ELISA. The sensor demonstrated exceptional specificity, successfully distinguishing collagen from non-collagenous proteins and differentiating bovine collagen from pig collagen. In addition, it exhibited high stability and reproducibility, with a relative standard deviation (RSD) of 2.97%. Practical applicability was confirmed through qualitative and quantitative analysis of leather samples from multiple archaeological sites in Xinjiang, China. These results establish the proposed immunosensor as a reliable and robust tool for ancient leather identification, with potential applications in the analysis of other protein-based archaeological materials.
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JOURNAL OF ELECTRONIC MATERIALS
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2025
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IF 2.5
Zhu Xingwei,Cheng Yongchao,Gu Xiuquan
A flexible temperature and humidity sensor has been developed based on a composite of polyvinylidene fluoride (PVDF) and thermoplastic polyurethane (TPU). The sensor performance was optimized by introducing graphene quantum dots (NGQDs) and ionic liquids (TFSI) into the polymer composite. This type of humidity sensors has high sensitivity, fast response, and excellent stability, making it suitable for use in wearable health monitoring. The addition of TPU into PVDF facilitates the formation of a porous structure which has both a large specific surface area and high hydrophilicity. After optimizing the PVDF/TPU mass ratio to 5:3, such a humidity sensor displays 1.46 times higher sensitivity than that of pure PVDF film, with a linear response range of 10–90% relative humidity. The response time and recovery time are 7.67 s and 6.37 s, respectively. Owing to the improved hydrophobicity, the sensors also exhibit a good stability in a high humidity environment for > 10 days without significant degradation. Moreover, such a composite also has the capability to distinguish normal breathing from rapid breathing, demonstrating its potential in wearable health monitoring.
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高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Jinying Zhu,Jiannan Yan,Mingzhu Zheng,Xiuying Xu,Hao Zhang,Yuzhu Wu,Chengbin Zhao,Jingsheng Liu
Proteins in corn mainly consist of zein and glutelin, existing in the form of complexes. Corn post-harvest ripening has a significant impact on the zein-glutelin interaction, which affects the structure and properties of protein complex. The changes in interaction, structure and physicochemical properties of zein-glutelin complex during corn post-ripening were investigated. The structural stability of the zein-glutelin complex was mainly maintained by hydrophobic interactions, hydrogen bonds, and disulfide bonds. After post-ripening at 15 °C for 45 days and 25 °C for 30 days, the complex protein subunits degraded, the α-helix transformed into β-sheet, and the hydrophobic interactions and disulfide bonds increased. Furthermore, both more ordered β-structure at 15 °C and higher disulfide bond at 25 °C formed protein rigid aggregates with a uniform and orderly distribution, which suggested a stronger zein-glutelin interaction, resulting in lower solubility and higher water- and oil-holding capacity of the protein complex.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Shuang Lin,Changsheng Qu,Dongyao Xu
The reutilization of industrial steel slag (SS) as an adsorbent for petroleum wastewater treatment was achieved through acid activation and subsequent surface modification with quaternary ammonium surfactants to yield organo-functionalized silica-rich materials (organo-SRSs). Acid activation exposed a highly hydroxylated SiO₂ matrix, enabling effective organic grafting and imparting enhanced hydrophobicity. Among the prepared materials, benzalkonium chloride functionalized silica-rich material (BC-SRS) exhibited superior performance, achieving a maximum naphthalene (NA) adsorption capacity of 462.9 mg/g due to synergistic π–π stacking, hydrophobic interactions, and weak electrostatic forces. Adsorption followed pseudo-second-order kinetics and Freundlich isotherms, with thermodynamic analysis indicating spontaneous and endothermic behavior for BC-SRS. The material demonstrated excellent reusability and selectivity under complex water chemistries. This work presents a sustainable strategy for converting industrial waste into high-efficiency adsorbents, advancing green remediation and circular resource utilization.
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高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Chenyang Cai,Ming Zhou,Shuai Cheng,Jiabin Cai,Meiling Chen,Liping Cai,Qinbo Peng,Guangyao Yang,Xiaoyan Wen,Qian Wang
Formaldehyde (HCHO) release is a long process due to indoor decoration and furniture, which poses a serious threat to human health. Yet it is still a great challenge to remove formaldehyde efficiently at room temperature for a long time. Herein, inspired by porous lotus seedpods, cerium-doped manganese-based catalysts supported on diatomaceous earth (MnXCeY-DM) with high efficiency for formaldehyde removal were successfully prepared by co-precipitation and coordination complexation processes. The results showed that the transition metal oxides on the surfaces of both catalysts before and after doping with Ce were not highly crystalline and well-dispersed. The introduction of Ce reduced the agglomeration of the excessive metal oxides on the surfaces. Noteworthy, Ce doping can bring larger porosity, specific surface area, and more nano effects, which can accelerate the oxidative breakdown of formaldehyde. The absorption and reaction efficiency of the Mn20Ce5-DM catalyst reached 100% for 12 h at an HCHO concentration of 2 mg/m 3 at room temperature, which was 4.67% higher than that of the Ce-undoped catalyst. The final removal efficiency of Mn20Ce5-DM reached 78.05% even after five cycles. At room temperature, diatomaceous earth (DM) has a strong adsorption function, and the addition of Ce element promotes the oxidation process of HCHO, which strengthens the synergistic effect of the decomposition of HCHO. This research provides an excellent strategy to improve the HCHO degradation efficiency and persistence of manganese-based catalysts at room temperature.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Yujie Wang,Xiaoqiang Li,Wenjie Zhu,Ce Zheng
Conventional methods like hot pressing (HP) for fabricating SiC-ZrC ceramics typically require high temperatures and external pressure, which can significantly degrade the performance of SiC fibers and restrict the nuclear application of SiC-ZrC composites. In contrast, this work successfully fabricated dense, high-purity SiC-ZrC ceramics with no obvious residual Si using a relatively low-temperature and pressureless RMI method. An obvious correlation between byproduct ZrSi 2 and processing temperature was observed. Notably, significant phase homogeneity differences were observed in the ceramics obtained from pure Si versus Si-Zr alloy infiltration. The low-temperature and pressureless preparation process of the RMI method in this study has promoted the application of SiC-ZrC ceramics as a modified matrix in SiC f /SiC composites for accident-tolerant fuel (ATF) cladding.
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MATERIALS & DESIGN
·
2025
·
IF 7.9
Yadong Chen,Guangteng Zhang,Da Ge,Meichen Wang,Tao Wu,Zheng Zou
The repair of bone defects remains a significant clinical challenge due to their structural complexity and patient-specific variability. Poly(vinylidene fluoride) (PVDF)-based piezoelectric materials have attracted considerable attention owing to their excellent biocompatibility and piezoelectric properties; however, their non-degradability restricts further application in bone tissue engineering. To address this limitation, a composite scaffold composed of degradable poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) and calcium phosphate silicate (CPS) was fabricated via three-dimensional (3D) printing, integrating structural customizability with multifunctional performance. The results demonstrated that after 7 days of hydration, the scaffold exhibited a compressive strength of 7.6–8.38 MPa and a piezoelectric coefficient (d 33 ) of 6.01 pC/N, exceeding that of native cancellous bone while maintaining good stability. Moreover, the scaffold displayed enhanced mineralization capacity, promoted osteoblast proliferation (102.7–107.6 %) and alkaline phosphatase activity, and maintained moderate mass loss with stable pH during degradation, thereby providing a favorable microenvironment for bone regeneration. Collectively, the 3D-printed PVDF-TrFE-CPS composite scaffold demonstrated synergistic effects in structural regulation, mechanical support, piezoelectric stimulation, and osteoinductivity, offering a promising strategy for the personalized repair of complex bone defects.
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高影响因子
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