JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Ze Liu,Yadong Hu,Chengkai Li,Zhenyu Zhang,Tingzhe Shen,Danni Zeng,Rongfeng Guan,Changjian Zhou,Pengyu Dong
Photocatalysis technology can degrade organic pollutants in wastewater, improving the ecological environment and protecting biodiversity. The BiVO 4 stable chemical properties of BiVO 4 make it a robust candidate for photochemical applications. Moreover, its broad light absorption spectrum and optimal band structure further enhance its potential, driving widespread research interest. The introduction of the eco-friendly biperovskite Cs 2 AgBiBr 6 enhanced BiVO 4 ′s surface area and visible light absorbance. Simultaneously, the doping process introduces impurities that modify charge transfer pathways, thereby enhancing the separation efficiency of photogenerated electron-hole pairs. When contrasted with pure BiVO 4 , the W-BiVO 4 /Cs 2 AgBiBr 6 composite demonstrates superior surface area characteristics and exhibits stronger absorption within the visible light spectrum. Within 40 min after exposure to visible light, the efficiency of W-BiVO 4 /Cs 2 AgBiBr 6 photocatalyst to degrade ofloxacin (OFX) and meloxicam (MEL) was 93.15 % and 92.70 %, respectively. Based on the toxicity analyses and antimicrobial assays simulated by the software, no highly toxic substances were found in the degradation intermediate products of OFX and MEL. The catalysts’ energy band structure and photoelectrochemical properties showed that W-BiVO 4 /Cs 2 AgBiBr 6 followed the S-scheme heterojunction charge transfer mechanism. By integrating BiVO 4 with other semiconductors in the form of S-scheme heterojunctions, this study explores a strategy that may effectively improve photocatalytic efficiency, particularly in pollutant degradation applications.
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DOI
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高影响因子
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
·
2020
·Vol. 246
·期 9
·1857-1865
·
IF 2.366
Yang Fanfan,Xu Long,Liu Xiang,Chen Chen,Dias Alberto C. P.,Zhang Xiaoying
Abstract Bisphenol S (BPS) is a major alternative to Bisphenol A (BPA) newly applied in food packing material and disrupts reproductive and developmental endpoints through endocrine pathways. This study aimed to develop a rapid, sensitive, and accurate chemiluminescence immunoassay (CLIA) for the detection of BPS in canned beverage. Anti-BPS monoclonal antibody (mAb) was generated by immunizing Balb/c mice with immunogen (BPS–BSA conjugation). CLIA assay conditions, including 3-[9-(((3-( N -succinimidyloxycarboxypropyl) [4-methxylphenyl] sulfonyl) amine) carboxyl]-10-acridiniumyl)-1-propanesulfonate inner salt (NSP-SA-NHS) labeling ratio (1:40), antigen concentration (1 μg mL −1 ) and antibody titer (1:8000; 125 ng mL −1 in PBS (0.01 M, pH 7.4)) were determined, respectively. The half inhibition concentration (IC 50 ), detection limit (IC 10 ), and working range of the CLIA in canned beverage were 0.04, 1.48, and 0.32–5 ng mL −1 , respectively. Cross-reactivity with other bisphenols (4,4′-thiodiphenol, Bisphenol F, 4,4′- dihydroxy benzophenone, Bisphenol A and Bisphenol B) was less than 0.56%, and the recovery rates of BPS in canned beverage ranged from 80 to 109.2% (intra-assay) and from 82 to 108.4% (inter-assay). The results of CLIA were compared with high-performance liquid chromatography–UV (HPLC–UV) analysis, showing a good correlation of 0.956. After proper sample pre-treatment, this method allows relatively large amounts of sample analysis in a limited time period (30 min). Thus, it was deemed suitable and efficient for routine screening of BPS in canned beverage. Graphic abstract
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Xu Yang,Rui Qiu,Ming-Jian Lan,Gang Chen,Wei Xu,Yu Shen
Designing the efficient, low-cost and stable electrocatalyst is of great significance for storage and conversion of the renewable energy to hydrogen. Herein, the binder-free Ni–Fe–S electrocatalysts were directly electrodeposited on Ni foam, which exhibited the excellent hydrogen evolution reaction performance with the overpotential of 51.4 mV at the current density of 10 mA cm −2 . Based on the analysis and results of as-synthesized Ni, Ni–Fe and Ni–S, the boosted electrocatalytic activity can be attributed to the composite effect between Ni and the introduced Fe and S. Additionally, the Ni–Fe–S electrocatalysts also displayed the low cell voltage (1.59 V at 10 mA cm −2 ), remarkable durability and high Faraday efficiency in overall water electrocatalysis . Moreover, the water electrolysis device with Ni–Fe–S bi-electrodes can be driven by a small wind power generation and producing 4 mL H 2 in 39 min, indicating the prepared Ni–Fe–S electrocatalyst has the great potentials in producing hydrogen via renewable energy.
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Nano Research
·
2014
·Vol. 7
·期 11
·1581-1591
·
IF 6.963
Guo Weisheng,Yang Weitao,Wang Yu,Sun Xiaolian,Liu Zhongyun,Zhang Bingbo,Chang Jin,Chen Xiaoyuan
Inorganic nanoparticles have been introduced into biological systems as useful probes for in vitro diagnosis and in vivo imaging, due to their relatively small size and exceptional physical and chemical properties. A new kind of colortunable Gd-Zn-Cu-In-S/ZnS (GZCIS/ZnS) quantum dots (QDs) with stable crystal structure has been successfully synthesized and utilized for magnetic resonance (MR) and fluorescence dual modality imaging. This strategy allows successful fabrication of GZCIS/ZnS QDs by incorporating Gd into ZCIS/ZnS QDs to achieve great MR enhancement without compromising the fluorescence properties of the initial ZCIS/ZnS QDs. The as-prepared GZCIS/ZnS QDs show high T
1 MR contrast as well as “color-tunable” photoluminescence (PL) in the range of 550–725 nm by adjusting the Zn/Cu feeding ratio with high PL quantum yield (QY). The GZCIS/ZnS QDs were transferred into water via a bovine serum albumin (BSA) coating strategy. The resulting Cd-free GZCIS/ZnS QDs reveal negligible cytotoxicity on both HeLa and A549 cells. Both fluorescence and MR imaging studies were successfully performed in vitro and in vivo . The results demonstrated that GZCIS/ZnS QDs could be a dual-modal contrast agent to simultaneously produce strong MR contrast enhancement as well as fluorescence emission for in vivo imaging.
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高影响因子
CATALYSIS COMMUNICATIONS
·
2021
·
IF 3.626
Jianan Li,Wenbo Sun,Xinyong Li,Hangfan Ma,Yaxuan Li,Chong Peng
Photocatalysis is an effective means to convert CO 2 and solar energy into high value-added chemicals. Herein, the surface gradient S doped CuCo 2 O 4 microflowers were fabricated by an in situ topotactic engineering strategy. This photocatalyst presented CO 2 photoreduction with a satisfying activity (5 h, 181 μmol) and stability (94.5% retention). Additionally, the theoretical calculations indicated the fomated M-S bond could be favorbale to facilitate the initial CO 2 ⁎ binding and promote the formation of COOH ⁎ intermediates. This work provides a novel strategy for the fabrication of effective photocatalysts and highlights an in-depth understanding of micro-level regulation towards photocatalytic overall performance.
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CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2022
·
IF 0.847
Ruiqi Gao,Huan He,Junxian Bai,Lei Hao,Rongchen Shen,Peng Zhang,Youji Li,Xin Li
ABSTRACT Nowadays, conjugated polymers have garnered numerous attention as a new class of organic photocatalysts due to their tunable electronic properties, low cost, excellent stability and sufficient light-absorption performance. In particular, pyrene-benzothiadiazole-based conjugated polymer (PBBP) has been considered to be a new type of conjugated polymers for photocatalytic H 2 evolution. However, the poor charge separation seriously limits its practical application in H 2 evolution. In this work, a PBBP-based polymer/CdS 2D/2D organic/inorganic S-scheme heterojunction photocatalyst with a strong internal electric field is, for the first time, prepared for efficient photocatalytic hydrogen evolution. The pyrene-benzothiadiazole-based conjugated polymers (PBBP) are synthesized by the Suzuki-Miyaura reactions. Then, the hybrid heterojunction photocatalysts are fabricated by coupling CdS with it through the ultrasonic mixing method. As a result, the highest H 2 -production rate of 15.83 mmol h −1 g −1 is achieved on 20% PBBP/CdS composite under visible-light irradiation, nearly 2.7 times higher than that of pure CdS. The apparent quantum efficiency (AQE) of 20% PBBP/CdS composite could reach 8.66% at λ = 420 nm. The enhanced activity could be attributed to the construction of S-scheme heterojunction, which accelerates the recombination of carriers with weaker redox ability and maintains the strong reducibility of electrons in CdS. This work provides a protocol for pyrene-benzothiadiazole-based conjugated polymers to prepare S-scheme heterojunction photocatalysts based on organic/inorganic coupling.
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高影响因子
Polymers
·
2018
·Vol. 10
·期 9
·967
·
IF 2.935
Si Gao,Ji Zhao,Xing Wang,Yanzhu Guo,Ying Han,Jinghui Zhou
This study focused on the structural differences of lignin after pyridine–acetic acid–water (PAW) and dioxane–acidic water (DAW) purification processes. These structural differences included the S/G ratio, condensed structure, weight-average (MW) molecular weights, β-O-4 linkages and sugar content. The chemical structure of the isolated crude lignin (CL), PAW purified lignin (PPL) and DAW purified lignin (DPL) was elucidated using quantitative13C NMR, 2D-HSQC NMR spectra, thermogravimetric analysis (TGA), gel permeation chromatography (GPC) and Fourier transform infrared spectroscopy (FTIR). The results showed that the PPL fractions contain fewer condensed structures, higher S/G ratios, more β-O-4 linkages, higher average MWand lower thermal degradation properties compared to the CL and DPL fractions. Furthermore, the PAW process was more selective in removing condensed units and enriching S-type lignin from CL compared to the DAW process. These results provide valuable information for understanding which purification process is more suitable to be applied for lignin.Keywords:lignin purification;structural recognition;condensed lignin;S/G ratio
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INORGANICA CHIMICA ACTA
·
2021
·
IF 2.545
Dan Zheng,Ting-Hong Huang,Cheng Luo,Jing Tang
Three dinuclear Cu(I) complexes, [Cu 2 (pnd)(PPh 3 ) 4 ](BF 4 ) 2 (1) , [Cu 2 (pnd)(dppp) 2 ] (BF 4 ) 2 (2) , and [Cu 2 (pnd)(DPEphos) 2 ](BF 4 ) 2 (3) (PPh 3 = triphenylphosphine , dppp = 1, 3-bis (diphenylphosphino)propane, DPEphos = bis(2-diphenylphosphinophenyl)ether, pnd = N , N ’-bis (pyridin-2-ylmethylene)naphthyl-1, 5-diimine), have been prepared and characterized by IR, 1 H NMR, 31 P NMR, 13 C NMR, XRD , elemental analysis and X-ray crystal structure analysis. The structural analysis reveals that the flexible pnd in 1 – 3 acts in a trans bridging coordination mode to connect two Cu + ions, forming a S-shape conformation, while each of Cu (I) ion is four-coordinate N2P2, adopting a distorted-tetrahedral geometry. DFT calculations show that the HOMOs of complexes 1 – 3 are primarily located on the copper d -orbital and the phosphine ligand, together with a specific contribution of pnd, while LUMOs are mostly composed of pnd with admixed Cu(I) d-orbital character. Corresponding calculations of atomic charges indicate that the charge of the copper atom in complexes 1 – 3 is below + 1, while the total charges of the coordinated atoms are 0.743–0.786. Moreover, the solid-state emission spectra of complexes 1 – 3 show the existence of broad emission bands at 350–550 nm.
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高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Huazhen Sun,Beibei Tang,Peiyi Wu
Metal–organic frameworks (MOFs) are being intensively explored as filler materials for polymeric proton exchange membranes (PEMs) due to their potentials for the systematic design and modification of proton-conducting properties. S-UiO-66, a stable MOF with functional groups of −SO3H in its ligands, was selected here to prepare S-UiO-66@graphene oxide (GO) hybrid nanosheets via a facile in situ growth procedure, and then a series of composite PEMs were prepared by hybridizing S-UiO-66@GO and sulfonated poly(ether ether ketone) (SPEEK). The resultant hybrid nanosheets not only possessed abundant −SO3H groups derived from the ligands of S-UiO-66 but also yielded a uniform dispersion of S-UiO-66 onto GO nanosheets, thus effectively eliminating the agglomeration of S-UiO-66 in the membrane matrix. Thanks to the well-tailored chemical composition and nanostructure of S-UiO-66@GO, the as-prepared SPEEK/S-UiO-66@GO composite PEMs present a significant increase in their proton conductivity under various conditions. In particular, the proton conductivity of the SPEEK/S-UiO-66@GO-10 membrane was up to 0.268 S·cm–1 and 16.57 mS·cm–1 at 70 °C-95% RH and 100 °C-40% RH (2.6 and 6.0 times that of recast SPEEK under the same condition), respectively. Moreover, the mechanical property of composite membranes was substantially strengthened and the methanol penetration was well-suppressed. Our investigation indicates the great potential of S-UiO-66@GO in fabricating composite PEMs and also reveals that the high proton conductivity of MOFs can be fully utilized by means of MOF/polymer composite membranes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 45
·19868-19879
·
IF 3.288
Sleshi Fentie Tadesse,Dong-Hau Kuo,Worku Lakew Kebede,Lalisa Wakjira Duresa
Discharging of organic pollutants from industrial activities into the water bodies is a common worldwide problem, which can adversely affect human life and the environment. Recently, many efficient, eco-friendly, and cost-effective photocatalytic methods have been investigated for environmental remediation. In this study, a simple and facile precipitation method at low temperature was proposed for the synthesis of V-doped Mo(O,S)2 oxysulfide. The crystallinity, morphology, elemental composition, and optical and electrical properties of the as-synthesized materials were characterized by XRD, Raman spectroscopy, FT-IR spectroscopy, FE-SEM, TEM, XPS, PL, and EIS. The photocatalytic performance of both bare and V-doped Mo(O,S)2 was evaluated in the degradation of methylene blue (MB) dye. The holes (h+) and hydroxyl radicals (OH˙) were identified as the main oxidative species for MB degradation. V-Mo(O,S)2-10 synthesized with 10% vanadium precursor showed the highest photocatalytic efficiency for MB degradation under visible light irradiation with an apparent rate constant of 0.028 min−1, which was much greater than that of bare Mo(O,S)2 at 0.0098 min−1. Besides, V-Mo(O,S)2-10 had the lowest recombination rate of electron–hole pairs and charge transfer resistance to enhance the photocatalytic activity, as evidenced by PL and EIS analyses. Therefore, V-doped Mo(O,S)2 can be a potential candidate for photocatalytic degradation of organic dyes for environmental remediation.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-14
·
IF 10.2
Zhao Yitong,Bo Tao,Wang Chenfei,Yao Dingjin,Pan Chaolan,Xu Weiyi,Zhou Hao,Li Ming,Zhang Si
Extensive efforts have been dedicated to enhancing the expression of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) in cancer cells for the development of effective cancer treatments. However, highly safe and efficient delivery of TRAIL gene remains a significant challenge, especially using cationic polymers. Here, a series of highly branched-linear poly(β-amino ester)s (H-LPAEs) are developed through a unique oligomer branching strategy. H-LPAEs exhibit a more uniform distribution of linear segments and branching units, leading to excellent DNA condensation and favorable physicochemical properties of H-LPAE/DNA polyplexes. In SW1353 and BMSC cells, the optimized H-LPAEs, H-LPAE B4−S5−TMPTA , achieves superior gene transfection efficiency of 58.0% and 33.4%, which were 2.5-fold and 2.0-fold higher than that of the leading commercial gene transfection reagent, Lipofectamine 3000. Excitingly, H-LPAE B4−S5−TMPTA mediated 56.7% and 28.1% cell apoptosis in HepG2 cells and HeLa cells highlighting its potential application in cancer gene therapy. In addition, locally administered H-LPAE B4−S5−TMPTA delivered TRAIL DNA to HepG2 xenograft tumors and inhibited tumor growth in vivo. This study not only proposes a novel strategy for synthesizing poly(β-amino ester)s with a unique branched-linear topology but also identifies a promising candidate for highly efficient TRAIL gene transfection.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2021
·
IF 8.271
Qinqin Liu,Xudong He,Jinjun Peng,Xiaohui Yu,Hua Tang,Jun Zhang
Extended light absorption and dynamic charge separation are vital factors that determine the effectiveness of photocatalysts. In this study, a nonmetallic plasmonic S-scheme photocatalyst was fabricated by loading 1D plasmonic W 18 O 49 nanowires onto 2D g-C 3 N 4 nanosheets . W 18 O 49 nanowires play the dual role of a light absorption antenna—that extends light adsorption—and a hot electron donor—that assists the water reduction reaction in a wider light spectrum range. Moreover, S-scheme charge transfer resulting from the matching bandgaps of W 18 O 49 and g-C 3 N 4 can lead to strong redox capability and high migration speed of the photoinduced charges. Consequently, in this study, W 18 O 49 /g-C 3 N 4 hybrids exhibited higher photocatalytic H 2 generation than that of pristine g-C 3 N 4 under light irradiation of 420–550 nm. Furthermore, the H 2 production rate of the best-performing W 18 O 49 /g-C 3 N 4 hybrid was 41.5 μmol·g −1 ·h −1 upon exposure to monochromatic light at 550 nm, whereas pure g-C 3 N 4 showed negligible activity. This study promotes novel and environmentally friendly hot-electron-assisted S-scheme photocatalysts for the broad-spectrum utilization of solar light.
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