COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Zhixian Du,Yuan Gao,Zhuanzhuan Liang,Yanqing Yang,Weike Zhang
In this work, the Bi 2 WO 6 /KCC-1 photocatalytic composite was prepared by hydrothermal method using Bi 2 WO 6 as photocatalyst and KCC-1 as cocatalyst, for degradation of Rhodamine B (RhB). The result shows that when the mass percentage of KCC-1 in the composite is 7 % (BK-3), the photocatalytic degradation efficiency is the highest, reaching 90.63 %. Furthermore, the BK-3 composite shows a well degradation activity (83.90 %) even after four consecutive cycles of photocatalysis. Characterization of the photocatalyst by various testing techniques show that the BK-3 composite presents high visible light response, narrow energy band, and strong separation of photogenerated carriers. The results of free radical capture experiments indicate that the main active substance in the degradation of RhB under visible light is h + and ·O 2 − also plays a certain auxiliary role. This study offers promising prospects for the preparation of highly efficient photocatalysts through the modification of bismuth-based materials.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
TALANTA
·
2019
·
IF 4.916
Yue Du,Yonghai Song,Juan Hao,Keying Cai,Nan Liu,Li Yang,Li Wang
A novel ratiometric fluorescent sensor for superoxide radical (O 2 •− ) detection was developed based on Schiff base polymer (SBP)/rhodamine-B (SBP/RDB) nanocomposites. The SBP/RDB was investigated by atomic force microscopy , scanning electron microscopy, transmission electron microscopy , X-ray powder diffraction, Fourier transform infrared spectroscopy, N 2 adsorption/desorption isotherms and fluorescence spectroscopy, etc. The results showed the SBP was two-dimensional (2D) crystalline nanosheet with the thickness of 0.5 nm. RDB could be self-assembled on each of 2D SBP surface to form SBP/RDB due to the hydrogen bond between N atoms of SBP and –COOH of RDB as well as π-π interaction. The SBP/RDB exhibited the characteristic fluorescence emission of both SBP at 485 nm and RDB at 585 nm under an excitation of 270 nm. The 2D SBP was not only acted as template to assemble RDB, but also used as reference fluorescence for O 2 •− detection. The SBP/RDB fluorescence probe for O 2 •− detection demonstrated high sensitivity and selectivity with good linear range (11.1 ± 0.76 nM–8.0 ± 0.36 μM) and low detection limit (3.7 ± 0.42 nM). Because of the low cost and simple operation, the work sheds some new light to construct ratiometric fluorescent sensors based on SBP to detect O 2 •− in drinking water and human blood serum for commercial applications.
研究领域:
生物化学
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Boyu Wang,Yani Huo,Cheng Chen,Xiao-Ye Wang,Chuancheng Jia,Jinying Wang,Xuefeng Guo
Achieving dynamic control over stereostructures and electronic properties of rigid molecules remains a significant challenge due to the delicate balance between stability and flexibility. Here, the construction of butterfly-shaped molecular junctions stabilized by moderate-strength boron-nitrogen (B←N) coordination between boraacenes and pyridines is reported. By leveraging the pivot-like flexibility of B←N bonds, molecular conductance switching with on/off ratios exceeding 100 is achieved through force-driven dynamic transitions between distinct stacking conformations. Single-molecule electrical measurements combined with first-principle calculations identify distinct charge transport mechanisms—through-space and through-bond—associated with the butterfly-wing open and closed configurations. Furthermore, external factors like electric fields and substituent effects modulate π – π interactions and charge transport properties. The introduction of destructive quantum interference effects can be achieved by replacing molecular units. The findings demonstrate that B←N coordination serves as a dynamically tunable linkage, offering a pathway to design molecular platforms with multifunctional units, customized stereo-conformations, and quantum effects.
研究领域:
物理化学
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分子电子学
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超分子化学
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纳米科技
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材料科学
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理论计算化学
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有机功能材料
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化学生物学
✓ 已验证
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Kashif Nawaz Khattak,Maosen Zhang,Caixia Deng,Shuang Li,Ling Jiang,Pran Gopal Karmaker,Xiupei Yang
In this work, the hybrid material NH 2 -MIL-125(Ti)@TpPa-NO 2 was synthesized by grafting an amino-functionalized titanium-based metal–organic framework (NH 2 -MIL-125(Ti)) with 2,4,6-tri(4-pyridyl)-1,3,5-triazine-nitro (TpPa-NO 2 ) moieties. The resulting composite material exhibited remarkable removal efficiency owing to the synergistic effects derived from the combination of the NH 2 -MIL-125(Ti) and TpPa-NO 2 components. The material demonstrated excellent stability and recyclability, making it a promising candidate for the treatment of wastewater containing rhodamine-B (Rhd-B). Some characterization techniques were employed to elucidate the structural features and surface morphology of the hybrid material. The adsorption capacity of NH 2 -MIL-125(Ti)@TpPa-NO 2 for Rhd-B dye was evaluated, and the results revealed an exceptional removal efficiency of 99.96 % and a high adsorption capacity of 25.54 mg/g, highlighting the superior adsorption performance of the material. The adsorption process was found to follow Langmuir isotherm and pseudo-second-order kinetics, indicating that chemisorption is the predominant mechanism governing the uptake of Rhd-B dye onto NH 2 -MIL-125(Ti)@TpPa-NO 2 .
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2014
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IF 1.552
Ming Ge
A visible-light-driven Ag 3 PO 4 catalyst was successfully synthesized by a facile ion-exchange route. The as-synthesized Ag 3 PO 4 was characterized by X-Ray diffraction (XRD), field-emission scanning electron microscopy, N 2 adsorption-desorption, UV-Vis diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy . Under visible light irradiation , the Ag 3 PO 4 catalyst showed excellent photocatalytic activity for rhodamine (RhB) degradation, but was poor at degrading methyl orange (MO) because of lower adsorption of MO molecules onto the surface of the Ag 3 PO 4 . The photodegradation of RhB and MO was achieved by holes and O 2 •− radical attack in the Ag 3 PO 4 suspension. The photodegradation of MO over the Ag 3 PO 4 catalyst was greatly enhanced in the presence of RhB owing to greater production of O 2 •− radicals.
研究领域:
环境化学
·
光催化
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材料科学
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环境功能材料
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污染物降解
✓ 已验证
DOI
高影响因子
CHEMISTRY & BIODIVERSITY
·
2022
·Vol. 19
·期 4
·e202100946
·
IF 2.745
Jie Liu,Ting Yang,Ya-Hong Yuan,Jia-Yao Hu,Li-Bin Lin,Mei-Li Yang,Dong-Zhu Duan,Guo-Wei Gong,Jian Xiao,Xiao-Ling Wang
We identified two new diterpenoidal acrocalyenes A ( 1 ) and B ( 2 ) through chemical investigation on Acrocalymma sp., a plant-associated fungus from the tender stem isolates of Sinomenium acutum collected from the Qinling Mountains, along with seven already-recognized compounds ( 3 – 9 ). The HR-ESI-TOF-MS and 1D/2D NMR data were utilized for structural elucidation of these compounds, and the single-crystal X-ray diffraction was employed for absolute configuration clarification of the novel acrocalyenes 1 and 2 . Bioassays revealed that the cytotoxicities of compounds 2 , 4 , 6 , 7 , and 8 against three human carcinoma cells (RKO, HeLa and HCC-1806) were moderate to strong, with IC 50 between 6.70–38.82 μM. These isolates were also evaluated for their fungal resistant potentials against Botrytis cinerea , Fusarium culmorum and Fusarium solani , in which 3 displayed significant inhibitory effects on all three phytopathogenic fungi, showing respective MIC of 50, 25 and 25 μM. Graphical
研究领域:
天然产物化学
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药理学
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植物学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Jian-Li Chen,Xiao-Hui Jia,Xuan Wu,Ming-Heng Yuan,Xinyue Xia,Dan Yin,Xu Chen,Ze-Yun Gu,Jia-Zheng Liu,Li-Ping Bai,Kathy Qian Luo,Jianfang Wang,Xiao-Ming Zhu
Acute kidney injury (AKI) is highly correlated with oxidative stress, and the application of antioxidants is one of the promising treatments. Salvianolic acid B (SAB) is a natural polyphenol with powerful antioxidant effects. Due to its inherent characteristic of inferior bioavailability, its clinical application is impeded. In this study, small SAB-incorporated nanoparticles (SFA) were synthesized via the self-assembly of SAB, ferric ions, and bovine serum albumin (BSA). Apart from antioxidant activity, the SFA nanoparticles were found to efficiently restore lysosome dysfunction induced by reactive oxygen species (ROS) in human kidney proximal tubular epithelial HK-2 cells. The small size and BSA incorporation make the SFA nanoparticles to be promising AKI-targeting nanoparticles. They are rapidly accumulated and long-term retained in injured kidneys of glycerol-induced AKI mice, especially in the proximal tubules which are the key lesion location during AKI. In vivo studies indicate that SFA nanoparticles show a superior protective effect compared with the free drug by suppressing oxidative stress and maintaining lysosome homeostasis indicated by enhanced heme oxygenase-1 (HO-1) expression and restored cathepsin B (CTSB) activity, respectively. In summary, this study develops a delivery system for the antioxidant SAB enhancing local delivery and offering an additional lysosome restoring mechanism for AKI therapy.
研究领域:
药理学
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纳米技术
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肾脏生理学
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生物医学工程
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产品关联
DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Zhiwei Liu,Na Li,Ping Liu,Zhihui Qin,Tifeng Jiao
Detection of iron ions in aqueous solutions is of significant importance because of their important role in the environment and the human body. Herein, a fluorescent rhodamine B-functionalized chitosan nanoparticles probe is reported for the efficient detection of iron ions. The chitosan nanospheres-rhodamine B (CREN) was prepared by grafting rhodamine B onto the surface of chitosan nanospheres through an amidation reaction. The as-prepared CREN fluorescent probes exhibit high fluorescence intensity under ultraviolet light. When iron ions are added to the CREN solution, they can be coordinated with weak-field ligands such as N and O on the surface of chitosan nanoparticles (CSNP) by a high-spin method. The self-assembly of Fe3+ on the surface of the CREN led to the generation of single electrons and the presence of high paramagnetism, resulting in fluorescence quenching. The quenching effect of Fe3+ on the CREN fluorescent probe can achieve the efficient detection of Fe3+, and the detection limit reaches 10–5 mol/mL. Moreover, this fluorescence quenching effect of Fe3+ on the CREN fluorescent probe is specific, which could not be disturbed by other metal ions and counteranions.
研究领域:
分析化学
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环境科学
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生物医学
✓ 已验证
DOI
高影响因子
Toxins
·
2017
·Vol. 9
·期 8
·249
·
IF 3.03
Kai Wang,Dongju Lin,Xiucai Guo,Wenlin Huang,Jiang Zheng,Ying Peng
Diosbulbin B (DIOB), a hepatotoxic furan-containing compound, is a primary ingredient inDioscorea bulbiferaL., a common herbal medicine. Metabolic activation is required for DIOB-induced liver injury. Protein covalent binding of an electrophilic reactive intermediate of DIOB is considered to be one of the key mechanisms of cytotoxicity. A bromine-based analytical technique was developed to characterize the chemical identity of interaction of protein with reactive intermediate of DIOB. Cysteine (Cys) and lysine (Lys) residues were found to react with the reactive intermediate to form three types of protein modification, including Cys adduction, Schiff’s base, and Cys/Lys crosslink. The crosslink showed time- and dose-dependence in animals given DIOB. Ketoconazole pretreatment decreased the formation of the crosslink derived from DIOB, whereas pretreatment with dexamethasone or buthionine sulfoximine increased such protein modification. These data revealed that the levels of hepatic protein adductions were proportional to the severity of hepatotoxicity of DIOB.Keywords:diosbulbin B;hepatotoxicity;protein covalent binding;metabolic activation;bromine-based analytical technique
研究领域:
药理学
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毒理学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CURRENT APPLIED PHYSICS
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2012
·
IF 1.9
Hongyan Zhang,Zhenhong Jia,Xiaoyi Lv,Junwei Hou,Xiaojing Liu,Ji Ma,Jun Zhou
A novel method is demonstrated to detect Antifreeze proteins (AFPs) based on photoluminescence (PL) using porous silicon (PS) coated with silver as a substrate. Ag/PS substrate is obtained through immersion of PS in silver nitrate (AgNO 3 ) solutions and is incubated with Rhodamine B (RB) as PL label. This substrate is easy to be fabricated and the pore size of PS is large enough for biological molecules to infiltrate, which is an ideal platform for biological molecule detection. Through functionalization used glutaraldehyde (GTA) and 4-( N -Maleimidomethyl) cyclohexane-1-carboxylicacid (Sulfo-SMCC) as cross-linkers separately, we test the role of the AFPs antibodies in selective capturing the AFPs antigen and explain the reason of the enhancement of PL intensity. The result shows a significant enhancement of the PL intensity of RB at around 590 nm due to the interaction of antibody–antigen competitive binding with AFPs. Therefore, the PL corresponding to RB was selected to detect the target AFPs and the PL intensity of RB proportional to the AFPs concentration. The detection limit was found to be 1.65 μg/ml for AFPs when GTA was used as cross-linker, and the detection limit was 16.5 ng/ml with Sulfo-SMCC as cross-linker.
研究领域:
生物化学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2025
·
IF 6.2
Riyi Lin,Ruiqi Liu,Lijuan Wang,Yiya Wang,Ningmin Zhu,Dengyu Chen,Liqiang Zhang
B-doping walnut shell char was prepared by the premodified doping method. The effects of B-doping amount, doping temperature, and coupling activation agent (activator amount, activation temperature) on the physicochemical structure and CO 2 adsorption performance of walnut shell biochar were investigated using BET, SEM, Raman, XRD, FT-IR, and XPS characterization techniques. The results indicated that B-doping walnut shell char exhibited a high specific surface area, and the pore structure was dominated by micropores. As the amount of B-doping increased, the CO 2 adsorption capacity of walnut shell char initially rose and then declined. The optimal doping mass ratio was 2:1, and the best pyrolysis temperature was 800 °C. The biochar pores became more abundant and disorderly after KOH activation. Excessive amounts of activators could damage the pore structure of activated char, thereby reducing the adsorption performance. The optimal mass ratio of the activator to walnut shell char was 1:1. As the activation temperature increased, the adsorption capacity of activated char for CO 2 initially improved and subsequently declined. The optimal activation temperature of walnut shell char was 700 °C. The optimal CO 2 adsorption performance was achieved by the CK1–1–700, which was 76.70 % higher compared to W800 without B-doping. Additionally, CK1–1–700 exhibited good cyclic performance. B-doping and activation treatment significantly enhanced the CO 2 adsorption capacity of walnut shell char. These research findings could serve as a reference for the high-value utilization of biomass.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2025
·
IF 6.3
Rong Wang,Weikun Zhu,Jiayi Hu,Siyang Liao,Cheng Chen,Baihang Chen,Shaobin Huang,Jiangyao Chen
Bismuth-based photocatalyst has garnered significant attention for degrading dyes and antibiotics in wastewater. However, their photocatalytic performance remains limited due to the high recombination rate of photoinduced carriers. Constructing a bismuth-based photocatalyst with high-efficiency and rapid degradation performance is crucial for its practical application. In this study, BiOBr nanosheets, with an ultra-thin structure and abundant (001) facet exposure, exhibiting stable photoelectric conversion ability, were successfully synthesized through a simply solvothermal method. Under simulated solar light irradiation, the catalyst achieved 100 % degradation of rhodamine B within 5 min and 97.6 % degradation of tetracycline within 30 min, while over 90 % degradation efficiency after 5 cycles was preserved, demonstrating high, rapid and stable performance of the catalyst. Moreover, 90.7 % and 44.5 % of removal and mineralization efficiencies for TC within 30 min were observed under natural sunlight irradiation. Superoxide radicals and photo-generated holes were the primary species responsible for the degradation of pollutants and the former contributed more effect in long reaction time. Finally, a possible photocatalytic oxidation pathway of tetracycline was proposed based on identified five main intermediates. The BiOBr nanosheets catalyst exhibits great potential for industrial applications in the elimination of hazardous and difficult-to-degrade organic pollutants in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）