LANGMUIR
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2024
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IF 3.7
Hongyan Yu,Yongxue Chen,Zhenyu Wen,Rensheng Wang,Sisi Jia,Wenjie Zhu,Yanping Song,Huanhuan Sun,Bingbing Liu
Pressure-induced surface-enhanced Raman spectroscopy (PI-SERS) has garnered significant attention as a subfield of SERS detection due to its capacity to regulate the band gap between molecules and substrates through pressure modulation. Currently, SERS detection primarily focuses on single molecules at atmospheric pressure with limited investigations conducted under high pressure conditions. Herein, we employed rose-shaped MoS2 nanoflowers as the SERS substrate and realized selective PI-SERS enhancement of R6G molecules in the binary (MV+R6G) and ternary (MV+R6G+RhB) systems. The MoS2 demonstrated an exceptionally low SERS detection limit of 5 × 10–6 M in binary and ternary systems with equimolar amounts of molecules. High-pressure experimental results indicate that MoS2 displays selective enhancement for R6G molecules, as evidenced by the comparison of the PI-SERS peak intensity ratio between MoS2 and the probe molecules. The proposed enhancement mechanism in binary and ternary SERS systems under high pressure involves pressure-induced changes in both the band structures of the MoS2 substrate and molecules, thereby influencing their charge transfer dynamics. Consequently, this approach holds great promise for practical applications in complex SERS systems operating under extreme conditions.
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ChemistrySelect
·
2024
·Vol. 9
·期 33
·e202401481
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IF 1.9
Mengyao Liu,Yuling Huang,Panpan Xu,Tingting Xu,Yinggui Zhu
Graphical In this paper, We developed a novel ECL sensor of the 6-MC/S 2 O 8 2− system by using 2-NSA as co-reaction accelerator. 2-NSA was first proposed as co-reaction accelerator, promoting the generation of additional oxidant SO 4 − from S 2 O 8 2− , thus amplifying the ECL signal. Moreover, this research provides a highly sensitive platform for the detection of MV. In this paper, the novel ECL sensor of the 6-methoxychromone (6-MC)/S 2 O 8 2− system was designed by using 2-naphthalene sulfonic acid (2-NSA) as a co-reaction accelerator. Fluorescence, ECL spectrum, and cyclic voltammetry (CV) were used to explore extensively the ECL mechanism of the system. It is worth pointing out that 2-naphthalene sulfonic acid (2-NSA) was first proposed as a co-reaction accelerator, reacting with the coreactant K 2 S 2 O 8 rather than the luminophore, promoting the generation of additional oxidant SO 4 − from S 2 O 8 2− , thus amplifying the ECL signal. Furthermore, under the optimal experimental conditions, the high sensitivity of the 2-naphthalene sulfonic acid (2-NSA)+6-methoxychromone (6-MC)/S 2 O 8 2− system was realized for the detection of methyl violet (MV) in the linear range of 10 −8 ~10 −2 M, with a detection limit of 5.14×10 −10 M. In addition, this find offers some guidance for further developing co-reaction accelerators with excellent performance in the future.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Shaochen Wang,Wen Si,Zhiguang Guo
With the advent of the information age, there is a growing demand for wearable sensing devices. Conventional hydrogels are a class of materials that can hold a large amount of water, with a three-dimensional network of hydrophilic polymerization chains inside. In remote areas or harsh environments, there is an urgent demand for a flexible sensor that is environmentally stable, wearable, and has high mechanical properties. Due to the hydrophilicity of the traditional hydrogel surface, it is easy to adsorb dust or be contaminated by liquid, which limits its further application. As a result, the superhydrophobic hydrogel F-PTD was designed using SiO 2 @PDA, F-HNT and PT hydrogel. TGA, XPS, SEM, EDS, FT-IR was used to characterize the structure of F-PTD, respectively. Based on the study of mussels, the adhesion property of polydopamine was utilized as an adhesion agent between organic–inorganic interfaces while improving the roughness of the hydrogel surface. The fabricated F-PTD superhydrophobic conductive hydrogels have excellent stretchability (Tensile Strain > 500 %), stable hydrophobicity (CA > 150°), and sensitive electrical conductivity (GF = 3.49). The contact angle of F-PTD is greater than 150° for tensile strains in the range of 0–350 %, and it maintains superhydrophobic under corrosive solutions with pH = 1–14. This enables F-PTD to perform the sensing function of detecting human body signals under complex environmental conditions, which has great potential for application in the field of underwater rescue, wearable electronics and human–computer interfaces.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Lihua Yang,Yu Jing,Linxiang Zhou,Dongming Qi,Xianghai Liao,Huan Wang,Kai Chen
The components and engineered structures of nanomaterials significantly influence their properties and functionalities. Inspired by the effective interfacial interactions between natural viruses and host cells, we developed a novel virus-like lignin/silver (Ag) nanoparticle with a spiky surface designed for antibacterial and antioxidant therapies. This study comprehensively examined the antibacterial performance of these composite materials with different morphologies against E. coli and S. aureus . It is worth noting that their rough surfaces enhanced bacterial adhesion, and reduced the effective interaction distance between ROS, Ag + , and bacteria, thereby significantly enhancing the antimicrobial activity. In vitro, results demonstrate the minimum inhibitory concentrations of virus-like lignin/silver (Ag) nanoparticles against S. aureus (Gram-positive) and E. coli (Gram-negative) are 1.95 μg/mL and 3.9 μg/mL, respectively. According to the international standard ISO 2009 “Biological Evaluation of Medical Devices”, F1-LNS@Ag-60 has higher biosafety compared to colloidal Ag NPs. Additionally, the radical clearance rate of F1-LNS@Ag-x for ABTS· + reaches 88.9 %, indicating substantial potential for wound dressing applications. Furthermore, evaluations of masks reveal that these nanoparticles can effectively eliminate bacteria on the mask surface within 30 min, highlighting their promising potential in personal protection. The concepts and design for modulating the structure of these virus-like nanoparticles hold considerable promise for developing novel, environmentally friendly, and highly efficient lignin-based antibacterial materials to address antibiotic overuse.
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ACS Sensors
·
2025
·
IF 9.1
Weida Zhang,Yusi Peng,Chunli Wang,Liangzhu Zhang,Meimei Xu,Shuai Zhao,Dan Li,Yong Yang
The inherently poor chemical stability and sensitivity of two-dimensional MXene materials pose significant challenges for their application in non-noble metal surface enhanced Raman scattering (SERS) under harsh conditions. Herein, a novel unfunctionalized Mo4/3B2 MBene with an ultraclean surface is reported as a stable, ultrasensitive SERS substrate for portable detection of environment toxins. The Mo4/3B2 MBene enables the detection of R6G down to 10–11 M with an SPF of 4.23 × 105, surpassing most MXene substrates, and its SERS mechanism is mainly attributed to the synergistic effects of enhanced charge transfer efficiency promoted by the ultraclean surface and vacancy modulated photon induced charge transfer resonance. Moreover, it exhibits excellent long-term SERS enhanced stability, which can maintain 86%, 75%, and 61% of its initial SERS performance after 45 days of storage at room temperature and 14 days of storage at low (−26 °C) and high (100 °C) temperatures. Notably, a portable Raman system based on Mo4/3B2 demonstrates ultrasensitive detection of the ricin A chain in real river water, achieving a concentration limit of 0.01 μg/mL and 97.8% accuracy assisted by the developed Transformer model. This work offers new insights for designing stable and sensitive MBene-based SERS substrates for field-deployable sensing in security and public health scenarios.
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DALTON TRANSACTIONS
·
2025
·
IF 3.3
Lan Yang,Qiyuan Lu,Xiao Zhou,Tao Yang,Chunfang Du
Adsorption is an effective strategy for treating water pollution and natural clay minerals-based materials display the great potential for removing pollutants from wastewater. In this paper, halloysite nanotubes (HNTs) modified with ethylenediaminetetraacetic acid (EDTA) were thermally treated to serve as supports for loading SnS2 to construct SnS2/HNTs(C) (SHCx-y). Methylene blue (MB) was selected as a target pollutant to examine the removal efficiency of the obtained adsorbents. SHC0.04-500 could remove more than 90 % of MB (50 mg∙L-1) within 18 min, which was 9 and 18 times higher than those of SnS2 and HNTs(C)-500, respectively. Moreover, the adsorbent SHC0.04-500 with good pH and temperature adaptability displayed the excellent adsorption performance toward cationic dyes and various antibiotics. The adsorption process of MB over SHC0.04-500 matched well with the Langmuir isotherm and pseudo-first-order kinetic model. The adsorption mechanism investigation suggested that the carbon layer on HNTs made the surface of SHC0.04-500 more negative, which mostly contributed to the improved adsorption performance. This work provides a low-cost, environmental-friendly, and efficient adsorbent for removing pollutants from wastewater, and contributes a new strategy to enhance the removal efficiency by a simple modification method.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
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IF 19
Zheng Liu,Hong Ding,Huilun Xu,Hao Yang,Jiangshan Liu,Zhendong Zhang,Rui Xiao,Limin Liu,Ganjun Feng,Li Zhang
Eradicating the bacteria on the surface of titanium-based (Ti) implants and optimizing the local immune environment is urgently needed to minimize the clinical implantation failures. Here, an ultrasound (US)-responsive Ti implant aiming at killing bacteria is prepared by building strontium titanate (SrTiO 3 ) nanoarrays on Ti substrate through a multi-step hydrothermal method and the subsequent decoration of Au nanoparticles (Au NPs). As an n-type semiconductor, SrTiO 3 can combine with Au NPs to form a Mott–Schottky heterostructure. The results reveal that the built-in electric field of the M–S heterojunction composed of Au NPs and SrTiO 3 significantly promotes the separation of electrons and holes while reducing the bandgap. Under US irradiation, Au@SrTiO 3 generates a large amount of reactive oxygen species (ROS) to kill bacteria, meanwhile eliminating bacterial biofilms that adhere to the implant surface. Besides, Au NPs accelerate bone remodeling by modulating macrophage polarization toward inflammation-suppressive orientation. Also, SrTiO 3 and Au NPs synergistically directed the osteogenic differentiation. The implantation in vivo shows that continuously optimizing the osteogenic microenvironment can obviously accelerate the osseointegration of Ti implant. Transcriptomic analysis reveals the in vivo pro-osteointegration mechanism of heterostructured Au@SrTiO 3 nanoarrays on Ti implant.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Liang Qiu,Yajie Zhang,Baiyu Wu,Wenqiong Liu,Yiwen Xie,Jing He,Kerang Huang,Jianlong Wang,Rong Wang
Aggregation-induced emission (AIE) materials hold significant promise for photocatalytic sterilization. However, poor water solubility and separation of photoexcited carriers limit their applications. To address these issues, we incorporated 1,1,2,2-Tetra (4-carboxyphenyl) ethylene (TPE) ligands into metal-organic frameworks (MOFs), tuning ligand ratios to synthesize a series of Zn-TPE frameworks (Zn-TPE 1-4). Remarkably, Zn-TPE-3 exhibited the lowest water contact angle (37.10 ± 1.24°) and the longest fluorescence lifetime (5.60 ns), indicating enhanced hydrophilicity and suppressed carrier recombination. Based on X-ray absorption fine structure spectroscopy and density functional theory calculations, Zn-TPE-3 features dual-Zn clusters bridged by carboxylates from four TPE ligands. Spatial orbital overlaps between adjacent TPE ligands enabled a ligand-to-ligand charge transfer mechanism, facilitating directional separation via a dominant photoactive S 3 state (oscillator strength f = 1.98) while circumventing the symmetry-forbidden S 1 pathway. These properties enabled effective interactions with bacteria and superior reactive oxygen species generation, yielding 3.90 and 6.54 log 10 CFU/mL reductions against S. aureus and E. sakazakii compared to TPE alone. Furthermore, the state-selective Zn-TPE-3 demonstrated complete elimination of microorganisms in Wei River water samples within 60 min. The work presents a novel MOF engineering strategy that amplifies AIE photosensitizer performance, advancing highly efficient photocatalytic antibacterial systems.
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Materials Today Communications
·
2025
·
IF 4.5
Jinzhao Shu,Xueyi Dong,Yuqi Zhang,Zhenzhen Pan,Tianyu Lu,Shijun Kang,Qianwei Liu,Zhiguo Hou,Sen Wang,Bin Yang
The growing danger of bacterial infections has resulted in an urgent need for developing new antibacterial approaches. In this study, cellulose nanofiber-copper sulfide (CNF-CuS), calcium peroxide (CaO 2 ), and L-arginine (LA) were incorporated into polyvinyl alcohol (PVA) and chitosan (CS) hydrogels to fabricate a multifunctional PVA/CS/CNF-CuS/CaO 2 /LA composite hydrogel with near-infrared (NIR)-activated photothermal, photodynamic, and gas therapies. Antibacterial tests on PVA/CS/CNF-CuS/CaO 2 /LA showed that, after a 10-minute NIR irradiation period, the hydrogel achieved antibacterial rates of 99.3% against E. coli and 99.7% against S. aureus. The marked improvement in bactericidal performance can be attributed to the synergistic interaction of elevated temperature, reactive oxygen species (ROS), and nitric oxide (NO). Given the effective antibacterial property of the PVA/CS/CNF-CuS/ CaO 2 /LA hydrogel, this study offers new insights into the design of composite hydrogels for wound healing and wound dressing applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jie-Ping Jia,Ling-Ping Xiao,Hui-Tong Jiang,Shao-Fei Sun,Zhi-Hong Ren,Hui He,Chengrong Qin,Julio Sánchez,Run-Cang Sun
The excessive release of heavy metals and organic dyes in water poses a serious threat to the ecosystem. However, most synthetic adsorbents are unsatisfactory in terms of preparation, economy and properties. Developing an inexpensive and excellent adsorbent that is easy to synthesize is urgent. Fortunately, sugarcane bagasse (SB), a cheap biomass material, can remove a few wastewater pollutants, but it fails to achieve practical application needs. Herein, we proposed a strategy for SB-Fe-TA preparation by precipitation complexation of tannic acid (TA) on SB. Batch experiments showed that the maximum theoretical removals of Pb(II) and methylene blue (MB) by SB-Fe-TA were 797.72 mg/g and 758.95 mg/g, respectively. Moreover, the practical performance test results showed that SB-Fe-TA had high efficiency and universality for mixed pollutants. The continuous-flow reaction testing of the solutions showed that the removal rate of MB was still close to 100 % within 100 h. The excellent properties of SB-Fe-TA were due to the abundant functional groups on the surface. This work provides a novel avenue for developing multi-functional, cheap and efficient bio-based adsorbent for wastewater treatment.
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JOURNAL OF FLUORESCENCE
·
2025
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IF 3.1
Chen Ling,Shao Keman,Xu Jiajia,Wang Xiwen,Huang Zhenwei,Lin Zhengzhong
Four rare-earth complexes were prepared using Eu³⁺ and Tb³⁺ as central rare-earth ions and benzoic acid, furoic acid, α-thenoyltrifluoroacetone, and phenanthroline as organic ligands, and a four-channel fluorescent sensor array was constructed for the identification of triphenylmethane drugs. The four sensing units have different degrees of fluorescence response to six triphenylmethane drugs. The fluorescence quenching of Eu(III) complex by malachite green and Tb(III) complex by methyl violet were confirmed to be the FRET effect. After five parallel experiments, a 4 × 6 × 5 fluorescence data matrix was obtained, and the linear discriminant method were used to distinguish six triphenylmethane drugs at 0.1, 1.0, and 10 µmol L⁻¹ and mixed triphenylmethane drugs at 1.0 µmol L⁻¹ with an accuracy rate of 100%. The array achieved the identification of triphenylmethane drugs in fish samples with accuracy rate of 97.4%.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
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IF 5.4
Qianqian Huang,Xian Wang,Mingzhu Zhang,Na Xu,Jia Wang,Xinqiang Tan,Xiaotian Li,Tianjun Ni,Wei Guo,Yunhui Yan
The scarcity of antibiotic alternatives has posed a serious threat of the global spread of antibiotic-resistant bacteria. Achieving a delicate balance between antibacterial activity and anti-inflammatory efficacy within infected tissues is crucial for promoting efficient wound healing. Herein, a novel near-infrared (NIR)-responsive nanomaterial (BSMC NPs) is fabricated via the in-situ growth of mesoporous polydopamine (MPDA) on the surface of Bi 2 S 3 , followed by the loading of curcumin (Cur) into the mesopores and onto the surface through π-π stacking interactions. This organic-inorganic hybrid system exhibits excellent photothermal conversion efficiency as well as prominent antioxidant capacity. Upon NIR light irradiation, the photothermal effect triggers the generation of reactive oxygen species (ROS) by both Bi 2 S 3 and MPDA, thereby enabling efficient bacterial eradication. Conversely, in the absence of light stimulation, the inherent antioxidant properties of MPDA and Cur allow for the rapid scavenging of excessive ROS, thus exerting potent anti-inflammatory effects. The pH- and NIR-dual responsive release profile of Cur has been experimentally verified. Antibacterial assays reveal that BSMC NPs achieve inhibition rates of 98.5 % against Staphylococcus aureus ( S. aureus ) and 92.4 % against Escherichia coli ( E. coli ) under 808 nm laser irradiation. The underlying antibacterial mechanism is attributed to the increased permeability of bacterial membranes and leakage of intracellular contents, which are induced by localized hyperthermia and ROS burst. Collectively, this work provides novel insights into the rational design of multifunctional biomaterials integrating antioxidant, antibacterial, and photothermal therapeutic functionalities.
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