ACS Applied Materials & Interfaces
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2025
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IF 8.2
Qing Tian,Haoyu Wang,Shuaiqi Huangfu,Rong Yang,Yao Chen,Jie Gao,Yingchun Yang,Lianbing Zhang
Although manganese dioxide (MnO2) has been explored as a powerful laccase nanozyme for pollutant oxidation in wastewater treatment, the phase-activity relationship of multiphase MnO2 remains ambiguous and controversial. Herein, the experimental studies show that the laccase-like activities and aerobic catalytic oxidation toward tetracycline antibiotics of the six types of MnO2 are in the following order: β- > λ- > γ- > α- > ε- > δ-MnO2. Density functional theory (DFT) calculations revealed that the catalytic activities are inversely proportional to the oxygen vacancy formation energies of the different MnO2 materials. Further investigation of surface oxygen species with reactivity demonstrated that rich oxygen vacancies boost the oxygen mobility and catalytic efficiency of MnO2 nanozymes, which is in good agreement with both experimental and DFT results. Hence, this study reveals the decisive role of the crystal phase in the oxygen vacancy generation, which elucidates the laccase-like catalytic mechanism of MnO2 nanozymes and is valuable for the future design and synthesis of MnO2 nanocatalysts.
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JOURNAL OF PHYSICAL CHEMISTRY B
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2017
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IF 3.177
Jing Zhang,Qing Tang,Zhong-Zheng Gao,Ying Huang,Xin Xiao,Zhu Tao
Two supramolecular assemblies between twisted cucurbit[14]uril and hemicyanine dyes have been successfully constructed on the basis of host–guest recognition. These supramolecular assemblies could be reversibly switched under acidic and neutral conditions. Furthermore, they responded to selected chemical stimuli such as methyl violet, thereby exhibiting potential analysis application.
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Nanoscale Research Letters
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2018
·Vol. 13
·期 1
·1-10
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IF 3.125
Zou Shenqiang,Zhu Xiaofang,Zhang Lirong,Guo Fan,Zhang Miaomiao,Tan Youwen,Gong Aihua,Fang Zhengzou,Ju Huixiang,Wu Chaoyang,Du Fengyi
Cerium oxide nanoparticles recently have received extensive attention in biomedical applications due to their excellent anti-oxidation performance. In this study, a simple, mild, and green approach was developed to synthesize cerium-doped carbonaceous nanoparticles (Ce-doped CNPs) using bio-mineralization of bull serum albumin (BSA) as precursor. The resultant Ce-doped CNPs exhibited uniform and ultrasmall morphology with an average size of 14.7 nm. XPS and FTIR results revealed the presence of hydrophilic group on the surface of Ce-doped CNPs, which resulted in excellent dispersity in water. The CCK-8 assay demonstrated that Ce-doped CNPs possessed favorable biocompatibility and negligible cytotoxicity. Using H 2 O 2 -induced reactive oxygen species (ROS) as model, Ce-doped CNPs showed highly hydroxyl radical scavenging capability. Furthermore, flow cytometry and live-dead staining results indicated that Ce-doped CNPs protected cells from H 2 O 2 -induced damage in a dose-dependent effect, which provided a direct evidence for anti-oxidative performance. These findings suggest that Ce-doped CNPs as novel ROS scavengers may provide a potential therapeutic prospect in treating diseases associated with oxidative stress.
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ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Meng Kong,Mingjie Li,Ruoxu Shang,Jingyu Wu,Peisong Yan,Dongmei Xu,Chaoxu Li
Marine shells not only represent a rapidly accumulating type of fishery wastes but also offer a unique sort of hybrid nanomaterials produced greenly and massively in nature. The elaborate “brick and mortar” structures of nacre enabled the synthesis of carbon nanomeshes with <1 nm thickness, hierarchical porosity, and high specific surface area through pyrolysis, in which two-dimensional (2D) organic layers served as the carbonaceous precursor and aragonite platelets as the hard template. Mineral bridges within 2D organic layers templated the formation of mesh pores of 20–70 nm. In contrast to other hydrophobic carbon nanomaterials, these carbon nanomeshes showed super dispersibility in diverse solvents and thus processability for membranes through filtration, patterning, spray-coating, and ink-writing. The carbon membranes with layered structures were capable of serving not only for high-flux filtration and continuous flow absorption but also for electrochemical and strain sensing with high sensitivity. Thus, utilization of marine shells, on one hand, relieves the environmental concern of shellfish waste, on the other hand, offers a facile, green, low-cost, and massive approach to synthesize unique carbon nanomeshes alternative to graphene nanomeshes and applicable in environmental adsorption, filtration, wearable sensors, and flexible microelectronics.
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ACS Applied Nano Materials
·
2024
·
IF 5.3
Lirong Zhang,Beibei Yu,Zijian Zhuang,Zhengzou Fang,Mengke Lu,Huijun Yu,Xiao Xu,Xin Sun,Fengyi Du,Miaomiao Zhang
Artesunate (Art) with a unique peroxy-bridging bond can react with a ferrous ion and produce excess carbon-centered radicals, which cause irreversible damage to tumor cells. However, the antitumor effect of artesunate still faces challenges due to its poor water solubility and insufficient amount of ferrous ions in tumor cells. Herein, we constructed artesunate coordinated zeolite imidazole framework nanoplatforms (Art/ZIF NPs) coated with ferric ion-rutin network (Ru–Fe@Art/ZIF NPs) for synergy therapy. In virtue of zinc-ion-mediated coordination, Art was efficiently loaded into ZIF-8 NPs (loading capacity and rate are 29.58 and 30.73%) and responsively released under an acidic environment. Meanwhile, the introduction of rutin (a type of plant flavonoid) not only enabled tumor targeting via GLUT receptors but also reduced Fe3+ to Fe2+ under acidic conditions. Subsequently, these ferrous ions loading with Art enhance the tumor killing effect via radical-dependent cell cycle arrest. This “core–shell” autocatalytic nanoplatform provides a novel strategy for developing Art-based chemodynamic therapy.
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INDUSTRIAL CROPS AND PRODUCTS
·
2024
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IF 5.6
Jisuan Tan,Yuxin Xu,Qin Deng,Yingmei Li,Yanzhen Yin,Xingtang Liang,Yong Luo
This study investigated the transformation of an agricultural byproduct, pomelo peel, into an environmental purifier by crosslinking assisted surface amination process and its use in wastewater treatment application. Surface morphology and textural analysis showed that the functionalized surface-amidated pomelo peel (SA-PP) attained a lamellar structure with an average pore size of 6.52 nm and a specific surface area of 7.82 m² g −1 . Zeta potential measurements confirmed that SA-PP exhibits a positive surface charge within a pH range of 3–11. This surface characteristic facilitated the effective adsorption of anionic dyes by SA-PP, including amaranth red ( Q e = 497.15 mg g −1 ), methyl orange ( Q e = 247.93 mg g −1 ), bright blue ( Q e = 231.53 mg g −1 ), and lemon yellow ( Q e = 116.77 mg g −1 ), as well as heavy metal ions like hexavalent chromium (Cr(VI), Q e = 193.17 mg g −1 ). Further investigations on the adsorption of amaranth red and Cr(VI) indicated that SA-PP achieved equilibrium after 30 min. The process followed the pseudo-second-order and Langmuir isotherm models, indicating monolayer adsorption. The adsorption efficacy of SA-PP remained consistent across a wide range of pH levels. After five cycles, SA-PP was able to retain more than 60 % of its adsorption capacity, highlighting its potential as a sustainable, cost-effective, non-toxic, and biodegradable adsorbent for wastewater treatment applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2012
·
IF 3.07
Ping Li,Xiao-Qiu Dou,Yi-Tian Tang,Shenmin Zhu,Jiajun Gu,Chuan-Liang Feng,Di Zhang
In this paper, 1,4-bi(phenylalanine-diglycol)-benzene (PDB) based Low-Molecular-Weight-Gelator (LMWG) hydrogels are modified using hydrophilic polysaccharide (sodium alginate). A set of techniques including Fourier transform infrared (FT-IR) spectroscopy, 1 H Nuclear Magnetic Resonance ( 1 H NMR), X-ray powder diffraction (XRD), Ultraviolet–Visible (UV–Vis), and circular dichroism (CD) had confirmed a β-turn arrangement of PDB gelators and a semi-interpenetrating network (semi-IPN), which was formed through hydrogen bonds between LMWG fibers and polysaccharide chains. The evaluation of physicochemical properties of hydrogels indicates that gelator-polysaccharide hybrid hydrogels possess better mechanical and water retention properties than LMWG hydrogels. The release study of dyes (model drug) from both LMWG and hybrid hydrogels was carried out. Compared with PDB based hydrogels, hybrid hydrogels show a selective and controllable release property for certain dyes. The results suggest LMWG-polysaccharide hybrid gels may find potential applications as promising drug delivery vehicles for drug molecules.
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FOOD CHEMISTRY
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2024
·
IF 8.5
Jun-Qiu Zhang,Xiao-Fang Shen,Jun Liu
Malachite green (MG), a widely used antiparasitic agent, poses health risks to human due to its genotoxic and carcinogenic properties. Herein, a stable dual-emission fluoroprobe of carbon dots/copper nanoclusters is prepared for highly selective detection of MG based on the inner filter effect. This probe exhibits characteristic emission bands at 435 and 625 nm when excited at 376 nm. After adding MG, the both emission signals were significantly quenched, and the ratio of fluorescence intensity (F 435 /F 625 ) was linearly related to the concentration of MG in the range of 0.05–40 μmol L −1 with a limit of detection of 18.2 nmol L −1 . Meanwhile, the two signals exhibit linear relationships with the concentration of MG, respectively, and the corresponding detection results were consistent. The fluoroprobe was successfully used for the detection of MG in fish samples with the recoveries ranging from 96.0% to 103.8% and a relative standard deviation of <3.3%.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Jinzhao Shu,Zhiguo Hou,Yuqi Zhang,Xueyi Dong,Yue Zhang,Qiangwei Liu,Shijun Kang,Mingliang Liu,Sen Wang,Bin Yang,Jiasheng Qian
In this paper, PVA/CS/CuS-based antibacterial hydrogel was prepared by a simple method. The CuS-based particles were characterized using zeta potentiometers, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and scanning electron microscopy. These analyses verified the successful synthesis of CuS@PDA and CuS@PDA@Ag particles. The composite hydrogel exhibited good photothermal effect and antibacterial activity, with silver doping significantly improving its photocatalytic performance. Under 808 nm near-infrared light irradiation, the hydrogel exhibited excellent photothermal conversion ability, with the maximum temperatures of the three hydrogels being 59.2 °C, 61.5 °C, and 64.8 °C, respectively. After 10-minute irradiation, the composite hydrogel exhibited obvious antibacterial activity due to the synergistic effect of hyperthermia and reactive oxygen species, resulting in a bactericidal efficiency of 96.2 % against E. coli and 98.4 % against S. aureus.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhen Han,Yang Li,Xinjun Wu,Jiawei Zhang
Remotely controllable soft actuators have promising potential applications in many fields including soft robotics, exploration, and invasion medical treatment. Shape memory polymers could store and release energy, resulting in shape deformation, and have been regarded as promising candidates to fabricate untethered soft robots. Herein, an untethered and battery-free soft navigator and gripper based on a shape memory hydrogel is presented. The shape memory hydrogel is obtained through hydrogen bonding between gelatin and tannic acid, and the hydrogel displays excellent shape memory properties on the basis of hydrogen bonding and the coil–triple helix transition of gelatin. Moreover, Fe3O4 nanoparticles are introduced to endow the hydrogel magnetic responsiveness and photothermal conversion capacity. Finally, the shape memory hydrogel in a stretched state is assembled with an inert hydrogel to achieve a bilayer hydrogel actuator, which could produce complex shape transformation due to the shape recovery of the shape memory layer induced by heat or light. Taking advantage of the magnetically control and light-responsive shape deformation, remotely controllable soft grippers that could navigate through tortuous paths and grasp objects from a hard-to-reach place have been accomplished. This approach will inspire the design and fabrication of novel shape memory hydrogels as remotely controllable soft robots.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Huiwei Ding,Zhihao Wang,Yu Guan,Rongyao Ma,Xin Tang,Qiaofeng Han
The effect of EDTA-2Na on the photocatalytic performance of bismuth-based compounds varied with their chemical compositions and EDTA dosage. For Bi 2 O 3 and Bi 5 O 7 I with high Bi/anions ratios, coordinating with EDTA-2Na at molar ratios of 1.5:1 for Bi 2 O 3 and 5:1 for Bi 5 O 7 I significantly improved photocatalytic activity of methyl violet (MV, 50 mg·L -1 ) degradation under visible irradiation, with apparent rate constants ( k ) of 0.0715 min −1 and 0.0261 min −1 , which were 102 and 44 times of those for pure Bi 2 O 3 and Bi 5 O 7 I, respectively. Besides, these samples also exhibited enhanced adsorption performance to cation dye MV due to decreased zero zeta potential. However, If the molar ratio of EDTA to Bi 2 O 3 exceeded 4:1 and the molar ratio of EDTA to Bi 5 O 7 I exceeded 5:1, the samples possessed the poor photocatalytic performance for the degradation of MV, even inferior to pure Bi 2 O 3 and Bi 5 O 7 I. Conversely, BiOX (X = Br, I) and Bi 2 O 2 CO 3 with low Bi/anion ratios didn’t show significant improvement in photocatalytic activity, and BiVO 4 and Bi 2 MoO 6 with lower Bi/anion ratios exhibited even worse photocatalytic performance after coordinating with EDTA-2Na. Photocatalytic mechanism suggests that EDTA-2Na’s electron transfer capabilities to the conduction band of high Bi/anion ratio compounds promote reactive oxygen species generation, enhancing their photocatalytic performance. For the low Bi/anion ratio compounds, the electrons of EDTA would transit to VB and trap the holes, hindering the hole-dominant photo catalysis process.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 3
·1-9
·
IF 5.3
Guo Dongying,Yang Hailiang,Zhang Longyue,Dai Ruoyu,Huang Yuankui,Hu Yaoping
Specific assay for methylene blue (MB) in aquaculture is critically required to assess the safety of ecosystems and aquatic products. In this work, a facile method is demonstrated for ratiometric fluorescence determination of MB based on blue/red dual emissive carbon dots (b/r-CDs). b/r-CDs, derived from the leaves of Impatiens balsamina, show weak and strong emission peaks at 432 and 672 nm, respectively, and possess a high photoluminescence quantum yield of 35.7%. The red fluorescence of b/r-CDs at 672 nm, serving as the response signal, can be significantly quenched by MB due to the mechanism of inner filter effect, while the blue fluorescence at 432 nm is insensitive to MB, thus acting as the background reference. With addition of an increased amount of MB, the fluorescence color of b/r-CDs gradually changes from red to blue, which realizes the visual detection. The linear range and limit of detection are measured to be 0.05–10 μM and 15 nM, respectively. Notably, a portable smartphone sensing platform is built for quantitative detection of MB by analyzing the RGB values. Moreover, the practical applications of b/r-CDs for monitoring MB in real water and aquatic products using both fluorescence spectrophotometer and smartphone achieve satisfactory results. Graphical
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