MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Tingting Hu,Haimei Zeng,Hao Peng,Guanchao Yin,Jihong Zhang,Jun Xie,Yang Jiang
With the increasing discharge of pollutants into air, water, and soil, the rapid and sensitive detection and treatment of chemical pollutants, including toxic organic dyes and heavy metal ions, have become critical for minimizing potential threats to the ecological cycle and human health. In the current research, an in-situ degradation approach for toxic substances is proposed, combined with surface-enhanced Raman scattering (SERS). Fiber probes based on a silver nanoparticles/ silver phosphate tetrapod (Ag/ Ag 3 PO 4 ) composite were fabricated using a sequence of ion exchange, chemical reduction, and subsequent coating processes. The fiber probes were deployed for ultra-sensitive SERS detection and in situ photocatalytic degradation of dyes (specifically crystal violet (CV)) and heavy metal ions (particularly Hg 2+ ). The probes were functionalized with 4-mercaptopyridine (4-MPY) to facilitate the detection of Hg 2+ . Notably, the probes demonstrated detection limits as low as 10 −14 M for crystal violet (CV) and 4-aminothiophenol (PATP), and 10 −12 M of Hg 2+ . Under light exposure, the substrate degraded 93.2 % of CV and 98.0 % of PATP within 60 min, and 82.3 % of Hg 2+ within 30 min, as monitored in situs. Finite element method analysis suggested that the high electromagnetic field intensity generated by Ag/ Ag 3 PO 4 resulted from the close packing of Ag nanoparticles. Furthermore, the SERS fiber probes exhibited outstanding stability, selectivity, and reusability. This research suggest that the recyclable Ag/ Ag 3 PO 4 fiber probes hold significant potential for the detection and in situ monitoring of the degradation of trace environmental contaminants.
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APPLIED RADIATION AND ISOTOPES
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2025
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IF 1.8
Tao Gao,Xiang Gong,Jiali Liu,Sheng Hu,Wei Yu,Yuhong Liu,Jiwei Liang
A method for regulating the rutile and anatase ratio of TiO 2 products by adding tartaric acid is reported. By this method, TiO 2 with a specific anatase/rutile ratio exhibited excellent selective adsorption performance of 68 Ge and 68 Ga. Experiment shows that Tartaric acid assist synthesized TiO 2 enabled strong 68 Ge adsorption but negligible adsorption of 68 Ga. Meanwhile, the TiO 2 adsorption exhibited significant acid resistance, with minimal Ti 4+ leaching. In addition, the 68 Ga elution efficiency and 68 Ge breakthrough of radioactivity experiments demonstrated that synthesized TiO 2 achieved an initial 68 Ga elution efficiency of 75%, which remained about 65% after 200 elution cycles. Furthermore, over the four-month observation period, the 68 Ge breakthrough of the TiO 2 adsorbent did not exhibit a significant increase, remaining below 1×10 -5 . Generally, the synthesized TiO 2 adsorbent exhibits potential as a 68 Ge/ 68 Ga generator column adsorbent with outstanding acid-resistant, radiation-resistant, efficient 68 Ga elution and low 68 Ge breakthrough for long-term.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Hongyu Wang,Tao Wang,Gonghao Li,Bo Wu,Ruijun Gao
Balancing increased recoverable strain with high phase transformation temperature is crucial for Cu-Al-Mn SMAs to cost-effectively overcome the service temperature limitation (<100°C) of NiTi-based SMAs. This study fabricated four types of Cu-12.5Al-3Mn SMAs modified with nano-Al₂O₃ p (0, 0.5, 1.0, and 1.5 wt%) using wire arc additive manufacturing (WAAM) with cored wires. It investigated the effects of nano-Al₂O₃ p on shape memory properties, exploring mechanisms via microstructural, phase, and hardness analysis. Results show that adding an appropriate amount of nano-Al₂O₃ p significantly enhances memory performance while maintaining high martensite transformation temperatures. The 0.5 wt% nano-Al₂O₃ p modified alloy exhibited optimal properties: a shape recovery rate of 87.77 % (13.8 % higher than the base alloy) and a recoverable strain of 7.02 % (>40 % higher than the commonly reported 5 %) under 8 % bending pre-strain. Its Ms temperature remained above 100°C (As, Af, Mf were largely unchanged), and full recovery time was halved compared to the unmodified alloy. The enhancement is attributed to nano-Al₂O₃ p strengthening the parent phase and improving thermoelastic martensite order via pinning. Their high stability under WAAM's high-energy heat source minimizes impact on alloy composition, while dispersed particles create lattice distortion and stress fields, reducing the energy barrier for martensitic transformation.
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Journal of Materials Chemistry C
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2025
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IF 5.1
Rongli Zhang,Guoya Wei,Chunhui Luo
Conductive hydrogels (CHs) were widely applied in actuating, sensing, health monitoring, etc. However, their applications in aquatic environments faced challenges, due to the excessive swelling and poor underwater adhesion. To address this issue, it was necessary to combine anti-swelling, adhesion, and long-term usability into one strain sensor. Hence, bilayer-structured CHs with stable sensing properties both in water and on land were developed via radical copolymerization of 2-hydroxyethyl methacrylate (HEMA) and L-serinyl acrylate-copper complex (LSA) to form an anti-swelling yet conductive matrix, followed by painting the adhesive layer of gelatin-tannin acid at the bottom. Because of the Cu2+ ions, it achieved ion conductivity, while the strong interaction between Cu2+ and carboxylic acid (-COOH)/amine (-NH2) groups stabilized Cu2+ ions and retarded leakage of conductive components. Due to the delicate balance of hydrophilic hydroxyl groups and hydrophobic backbones, the hydrogel displayed excellent swelling-resistance (with a swelling ratio of approximately 20%, tensile stress of 215 kPa, tensile strain of 180%, and conductivity of 17.9 mS/m) even after immersing in water for a month. Meanwhile, the hydrogel maintained robust adhesion (15 kPa) in aquatic environments for a month. Strain sensors based on the bilayered hydrogel exhibited linear sensitivity in monitoring human motions both on land and underwater, and enabled information transmission through the Morse code. Consequently, this strain sensor holds significant potential in underwater wearable devices.
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RSC Advances
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2025
·Vol. 15
·期 37
·30456-30465
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IF 4.6
Jiangpeng Tang,Chang-ye Hui,Shunyu Hu,Wanyan Wu,Peishuo Cao,Jingwen Ling,Xueqin Yang,Zhenlie Huang,Yan Guo
Rapid, low-cost trace inorganic Hg(II) detection in environmental waters remains a critical public-health challenge. Here, we engineered Escherichia coli into a naked-eye whole-cell biosensor by coupling a redesigned MerR-Pmer element to the pyomelanin biosynthetic pathway. Three 4-hydroxyphenylpyruvate dioxygenase (HppD) homologs from Aeromonas media WS, Aeromonas hydrophila 4AK4, and Pseudomonas aeruginosa PAO1 were codon-optimized and functionally screened. The sensor strain of TOP10/pHg-PAO1 exhibited the broadest quantitative range (4.9–1250 nM) and the lowest detection limit (1.2 nM), outperforming most fluorescent counterparts. The water-soluble red-brown pyomelanin product was measured directly in the culture supernatants by absorbance at 400 nm, without requiring extraction. It remained chromogenically stable for at least 14 hours. The biosensor demonstrated absolute selectivity for Hg(II) in the presence of other ions, including Mg(II), Ca(II), Cd(II), Mn(II), Cu(II), Pb(II), and Zn(II), all at a concentration of 5 μM. It retained quantitative accuracy in tap, lake, and coastal seawater matrices. These features enable on-site, equipment-free screening of environmental waters and establish pyomelanin as a robust, user-friendly chromogenic reporter for next-generation whole-cell sensors.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Kai Zhu,Zihan Lin,Xinyi Bai,Fangfang Chang,Qing Zhang,Xiaolei Wang,Zhengyu Bai
Electrocatalytic reduction reaction of CO2 (CO2RR) into value-added multicarbon (C2+) products represents a sustainable strategy for mitigating greenhouse gas emissions and enhancing the production of high-value chemicals. Cu-based catalysts are optimal for the CO2RR, facilitating the generation of C2+ products such as ethanol, which have significant industrial applications. However, converting CO2 to C2+ products remains a great challenge, necessitating the simultaneous achievement of high current density, Faradaic efficiency (FE), and operational stability for industrial-scale implementation. Herein, we prepared Cu/Cu2O catalysts with diverse morphologies and the ratio of the Cu+/Cu interface, which was rectified by regulating the interactions between the active interface and the intermediate (*CO). The electrochemical analysis demonstrated that reconstructed Cu/Cu2O nanodendrites with dominant grain boundaries exhibited remarkable performance in generating C2+ products, achieving a Faradaic efficiency (FE) of 71.8%, including 49.7% FE of ethanol and a substantial partial current density of 390.0 mA cm–2 within the flow cell. In situ spectroscopy characterization and theoretical calculations revealed that the increased ethanol selectivity originated from the rectification of the Cu/Cu2O interface by the *CO intermediate, which accelerated H2O dissociation, reduced the free energy for *CO hydrogenation to *COH, and facilitated asymmetric *CO-*COH coupling to preferentially reduce CO2 to ethanol. This study provides profound insights into the C–C coupling pathways and sheds light on the rational design of ethanol-oriented electrocatalysts, contributing to sustainable chemical synthesis and energy utilization.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Yaozu Mi,Shuo Zhang,Haohao Yan,Genji Yang,Hua Yang,Yang Zhou,Lei Miao,Xinyan Gao,Yaqi Hong,Hailian Zang,Chunyan Li
In this study, we utilized typical Chinese medicine herbal residues (CMHRs)－Scutellaria baicalensis ( Scutellaria baicalensis Georgi) residue (SR), as the raw material and employed Na 2 SiO 3 and Fe 2 (SO 4 ) 3 as modifying agents to fabricate a novel and multifunctional hydrochar (FeSi-SRHC), which was designed for comprehensive removal of typical contaminants such as Cu 2+ , Zn 2+ , tetracycline (TC), and ciprofloxacin (CIP), along with relevant bio-contaminants (resistant bacteria (RBs) and resistance genes (RGs)) present in wastewater. Based on the analysis of adsorption kinetics and Freundlich isotherm, it was found that FeSi-SRHC exhibited physical monolayer adsorption for Cu 2+ /Zn 2+ while mainly chemical multilayer adsorption for TC/CIP in single-contamination system. Furthermore, Langmuir isotherm demonstrated excellent adsorption capacity of FeSi-SRHC towards Cu 2+ /Zn 2+ /TC/CIP with maximum capacities of 255.75, 265.26, 425.53, and 404.86 mg/g, respectively. In the co-contamination system, the presence of Cu 2+ , Zn 2+ , TC, and CIP exhibited varying degrees of inhibitory or promotive effects on the mutual adsorption by FeSi-SRHC. This divergence stemmed from differences in complexation intensities and concentration ratios among diverse co-existing contaminants. Based on XPS and Density Functional Theory (DFT) analyses, the adsorption process for Cu 2+ , Zn 2+ , TC, and CIP by FeSi-SRHC primarily involves pore fill, complexation reactions, ion exchange, hydrogen bonding, π-π stacking interactions, and electrostatic interactions. Bio-contaminant removal experiments revealed that the release of baicalin and wogonoside from FeSi-SRHC disrupts the structure of RBs cells and compromises the integrity of resistance plasmids. The practical application experiment showed that FeSi-SRHC displayed favorable performance for removing heavy metals, antibiotics, and bio-contaminants in actual wastewater. This study presented a “Treating waste with waste” strategy, which provided a method with low carbon, eco-friendly, and inexpensive for CMHRs resources and turning waste into treasure while proposing a idea to address the challenges associated with treating heavy metal, antibiotic, and bio-contaminant contamination in wastewater.
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JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Hongyan Zhang,Jiehui Huang,Yuxiang Shen,Zuofang Yao,Chenchen Xing,Yanping Hou
Z-Scheme heterojunction photocatalysts can effectively suppress the recombination of charge carriers while maintaining high redox capacity. In this study, ZnTe/WO 3 (ZW) Z-scheme heterojunction photocatalysts were synthesized using a hydrothermal method, and a series of photocatalytic materials were prepared for the simultaneous removal of tetracycline (TC) and Cu(II) from water. The physicochemical and photoelectrochemical properties of the catalytic materials were characterized through various methods, including SEM, XRD, XPS, and others. The experimental results indicate that the ZW-10 % composite material exhibits the most significant removal efficiency for pollutants. Within 150 min of visible light irradiation, the removal rates for TC and Cu(II) reach 73.8 % and 73.3 %, respectively, representing a substantial improvement compared to individual ZnTe and WO 3 . Free radical capture experiments and electron spin resonance analysis reveal that ·O 2 − and ·OH are the key reactive species responsible for TC oxidation, while electrons (e − ) dominate the reduction of Cu(II).
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
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IF 15.7
Shen Huasen,Li Zhaohuai,Li Jiantao,He Qiu,Li Mengjun,Tian Yunan,Wu Guoning,Zhao Yan,Zhang Xuanxuan,Xiao Jingjing,Amine Khalil,Li Yuyu,Xie Ming,Lu Jun
The growth of lithium (Li) dendrites and the accumulation of dead Li (i.e., Li metal regions which are electronically disconnected from the current collector) significantly undermine the safety and performance of Li metal batteries. This study employs kilogram–scale atomic layer deposition technology to construct zinc oxide with a preferential (002) crystal orientation, which homogeneously forms on commercial carbon nanotube papers. Our approach emphasizes the importance of achieving a moderate Li adsorption energy and low Li migration energy barriers to suppress Li dendrite growth. In this work, we introduce the concept of “catalytic” effect for dead Li reconversion, as validated through time–of–flight secondary ion mass spectrometry, leading to a Li plating/stripping efficiency of 99.89%. The Ah–level Li metal pouch cells with high–nickel positive electrodes achieve a specific energy of 380 Wh kg −1 (based on the mass of the whole pouch cell) and demonstrate stable cycling under demanding conditions. Analysis of the cycled pouch cells confirms the structural integrity and provides insights into the mechanism of the dead Li “catalytic” conversion.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yijin Wu,Shaofeng Wang,Hui Huang,Jingling Yu,Jieren Liang,Hai Huang,Jianying Guo,Zhaoxin Tang,Jianzhao Liao
Background With the increasing application of copper nanoparticles (CuNPs) across various fields, its toxicity and hazards are gradually being confirmed. Hesperidin (Hes), a flavonoid compound with extensive antioxidant and anti-inflammatory effects, has recently attracted public attention. Methods Molecular docking was employed to investigate the potential binding sites between Hes and SIRT3. The activation of the SIRT3-FOXO3A signaling pathway by Hes was further validated through a series of experiments in vitro and vivo. Results The results indicate that exposure to CuNPs can cause pathological damage to liver. Compared with the control group, exposure to CuNPs induced the accumulation of reactive oxygen species and mitochondrial UPR mt in broiler liver, specifically manifested as an increase in reactive oxygen species and the gene and protein levels of UPR mt related proteins. The molecular docking results indicate that Hes and SIRT3 have potential binding sites. However, after treatment with Hes, pathological damage in liver was alleviated. At the same time, we found that the SIRT3-FOXO3A signaling pathway was activated, leading to a significant decrease in the expression levels of proteins and genes related to UPR mt . Conclusion Hes can ameliorate hepatic oxidative damage and UPR mt induced by exposure to CuNPs by activating the SIRT3-FOXO3A pathway.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yushan Chen,Zhiwen Cheng,Hongbo Zhang,Jianxing Liang,Jingdong Li,Chenyu Bao,Shuxun Chen,Xi Wu,Zhujun Liu,Jinping Jia,Maohong Fan,Kan Li
The adsorption strength of H 2 O on the catalyst surface is a key factor in electrocatalytic hydrogen/oxygen evolution reactions (HER/OER). Excessive adsorption increases the energy barrier for intermediate formation, hindering HER/OER activity and stability. Here, a strategy is proposed for modulating lattice strain in 2D materials via 3D substrates. NiOOH/NiCu, a electrocatalyst with 2D film loaded on 3D branches, is synthesized on copper oxide nanowire arrays, and NiOOH compression strain is tuned within 0%–8.6% by controlling array diameter. In situ characterization and density functional theory calculations show that compressing NiOOH interlayer spacing weakens the adsorption of H 2 O and intermediates (*H/*O), lowers the Tafel step energy barrier and Gibbs free energy of *OOH formation, thus improving HER/OER activity. The 5.9% strained NiOOH/NiCu achieves HER and OER overpotentials of 18 and 197 mV at 10 mA cm −2 with Tafel slopes of 30.6 and 35.6 mV dec −1 , respectively, and operates stably at 1 A cm −2 for 1200 h in an alkaline anion-exchange-membrane electrolyzer.
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Advanced Energy Materials
·
2025
·
IF 26
Xinrui He,Hailong Sun,Peifeng Yu,Hezhang Li,Zezhan Zhang,Yi Niu,Jing Jiang,Chao Wang
Thermoelectric devices have garnered significant interest but face limitations due to their reliance on external equipment and relatively low energy density for energy storage. This study introduces an innovative integrated device that achieves both the function of thermoelectric conversion and energy storage within a single unit through a precipitation-driven Thermogalvanic effect. Strikingly, both the thermoelectric (P max = 3.51 W m −2 ) and electrochemical (E = 459 J m −2 , surpasses the reported highest value by 132%) performances are excellent. Furthermore, a large-area prototype module comprising 32 units manifests an open circuit voltage of 1.7 V and exhibits an energy density of 463.9 J m −2 . This work provides an innovative and effective approach to the high-performance recycling system of thermoelectric conversion and energy storage integrated devices.
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