CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Linzi Huang,Yilin Wang,Kunxiang Deng,Xiaoqian Sun,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
As an oil-soluble antioxidant, tert -butylhydroquinone (TBHQ) is widely used in edible oils, so accurate control of its content is significant for food safety. Here, a CdIn 2 S 4 /SnIn 4 S 8 S-scheme heterojunction structure was constructed by in-situ growth of smooth flower-like CdIn 2 S 4 on rough three-dimensional SnIn 4 S 8 microspheres via a one-pot co-precipitation technique. Subsequently, TBHQ was combined with CdIn 2 S 4 /SnIn 4 S 8 /GCE, and the photocurrent signal was significantly increased, which could be detected in the concentration range from 0.02 to 150 μM, with the limit of detection as low as 2 nM. The reaction mechanism of CdIn 2 S 4 /SnIn 4 S 8 composites was verified by using density functional theory calculations. Meanwhile, the reason for the outstanding detection of TBHQ was investigated by exploring the electrostatic potential and the related redox potential. In addition, the sensor was demonstrated to have excellent recoveries by comparing UV–Vis spectrophotometry for the detection of TBHQ in peanut oil, canola oil, blended oil, and soybean oil.
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Junyang Zhang,Wei Shi,Maoting Yang,Kaiping Huang,Yuanqiang Zhu,Zhengfeng Xie
With the continuous development of nuclear industry, the discharge of radioactive iodine ( 129 I and 131 I) become a potential danger to ecological environment. The development of high-performance iodine capture materials has important practical significance to reduce the harm of radioactive iodine. With the aim to construct new iodine-adsorbing polymer under the “bottom-up” structural designing guidance, using sulfur (S), branched polyethyleneimine (PEI) and 4,4’-oxybis(isocyanobenzene) (OBI) as starting substrates, a thiourea-modified PEI derivative (PEI-SIA) with abundant N/S/O-heteroatoms and aromatic molecular fragments was successfully prepared here via efficient sulfur-isocyanide-amine multicomponent polymerization (SIA-MCP). Characterization of PEI-SIA’s fundamental properties indicated that it is a new type of covalent organic polymer (COP). The iodine adsorption performance of PEI-SIA was systematically investigated. Experimental results showed that PEI-SIA can effectively adsorb iodine in steam (75 °C), cyclohexane, and aqueous phases, with the equilibrium adsorption capacities up to 6.48, 2.63, and 3.01 g g −1 , respectively. The iodine adsorption mechanism of PEI-SIA was characterized by experimental investigation and Density Functional Theory (DFT) calculation. The results revealed that PEI-SIA’s high iodine adsorption performance can be attributed to the synergistic effect brought by N/S/O-containing segments and the electron rich aromatic skeletons in PEI-SIA.
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 6
·1852-1861
·
IF 6.1
Qihao Wu,Tao Xie,Li Zhang,Heju Gao,Jiahui Jiang,Ting Zhao,Guancheng Xu
Wearable and rechargeable zinc–air batteries (ZABs) hold significant potential for applications in flexible electronics and light weight power sources due to their high energy density and excellent safety. However, the practical use of ZABs is hindered by the slow kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) on the air cathode. Here, we prepared S, N co-doped carbon nanotubes loaded with a cobalt–iron alloy (CoFe and Co0.72Fe0.28) and Co8FeS8 nanoparticles that can act as bifunctional electrocatalysts through one-step pyrolysis using the CoFe formic-acid framework (CoFe-FF) as the metal source. This electrocatalyst exhibited a superior electrocatalytic performance compared to commercial Pt/C (20 wt%) and RuO2. The ZAB assembled with CoFeS/SNCNT demonstrated an open-circuit voltage (OCV) of 1.47 V, a maximum power density (Pmax) of 175.3 mW cm−2, and a good cycle life. Furthermore, the flexible ZAB assembled with CoFeS/SNCNT achieved an OCV of 1.38 V and a Pmax of 77.7 mW cm−2, while maintaining stability under different bending angles. This study presents a feasible strategy for synthesizing and constructing high-performance non-noble metal bi-functional electrocatalysts for rechargeable zinc–air batteries.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Adugna Boke Abdeta,Feyisa Wedajo,Qinhan Wu,Dong-Hau Kuo,Ping Li,Hanya Zhang,Ting Huang,Jinguo Lin,Xiaoyun Chen
Cellulose plays a significant role in designing efficient and stable cellulose-based metallic catalysts, owing to its surface functionalities. Its hydroxyl groups are used as anchor sites for the nucleation and growth of metallic nanoparticles and, as a result, improve the stability and catalytic activity. Meanwhile, cellulose is also amenable to surface modifications to be more suitable for incorporating and stabilizing metallic nanoparticles. Herein, the Ag-/Bi-doped Mo(S,O)3 trimetallic sulfo-oxide anchored on B and N codoped cellulose (B–N–C) synthesized by a facile approach showed excellent stability and catalytic activity for PHER at 573.28 μmol/h H2 with 25 mg of catalyst under visible light, and 92.3% of the 4-nitrophenol (4-NP) reduction was achieved within 135 min by in situ-generated protons. In addition to B and N codoping, our use of the calcination method for B–N–C preparation further increases the structural disorders and defects, which act as anchoring sites for Ag-/Bi-doped Mo(S,O)3 nanoparticles. The Ag-/Bi-doped Mo(S,O)3@B–N–C surface active site also stimulates H2O molecule adsorption and activation kinetics and reduces the photogenerated charge carrier’s recombination rate. The Mo4+ → Mo6+ electron hopping transport and the O 2p and Bi 6s orbital overlap facilitate the fast electron transfer by enhancing the electron’s lifetime and photoinduced charge carrier mobility, respectively. In addition to acting as a support, B–N–C provides a highly conductive network that enhances charge transport, and the relocated electron in B–N–C activates the H2O molecule, which enables Ag-/Bi-doped Mo(S,O)3@B–N–C to have appreciable PHER performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Xinmei Qian,Chunxiang Li,Mingyu Zheng,Jinglun Wang,Haowen Huang,Keqin Deng
Very few MOF-related derivatives have been applied for sensors. Sensitive analysis of antibiotics in food products is one of the crucial research fields. The work described the synthesis of magnetic electrocatalyst with FeCo alloy nanoparticles confined in S, N-doped bamboo-like carbon nanotubes (FeCo@S,N-CNTs) by using bimetallic MOF as precursor. For comparison, a series of materials were prepared and used to modify screen-printed electrode (SPE). Their electrocatalytic capacities were investigated for the electrochemical reduction of two antibiotics, chloramphenicol (CAP) and nitrofurantoin (NFT). By using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), the magnetic FeCo@S,N-CNTs was found to possess the better electrocatalysis. Using the disposable FeCo@S,N-CNTs/SPE constructed by magnetic control, simultaneous analysis of CAP and NFT was achieved in linear ranges of 0.05–320.0 μM and 0.01–75.0 μM with the limit of detection of 20.0 nM and 3.5 nM, respectively. The real sample detection validated the practicability of FeCo@S,N-CNTs/SPE.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wenhui Fang,Tingting Tang,Min Li,Shixian Xin,Ying Wu,Yutao Cao,Zhize Yu,Wei Cui,Zengxi Li,Hong Zhao
Designing catalysts at atomic level fine-tune the electronic structure of surface-active site for efficient water splitting, is a highly desirable approach but also poses significant challenges. This study focuses on the synthesis of a series of electronically tunable metal single-atom (M−SAs) catalysts: M 9 @S-Ni(OH) 2 (M=Pt, Mn, Fe or Cu). Experimental results reveal that introduction of trace S-heteroatoms and metal atoms into Ni(OH) 2 lattice can effectively modulate the electronic structure of M 9 @S-Ni(OH) 2 through modulation of p-d and d-d orbital hybridization, resulting in exceptional performance in water electrolysis. Among M 9 @S-Ni(OH) 2 , Pt 9 @S-Ni(OH) 2 and Fe 9 @S-Ni(OH) 2 exhibit excellent hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performance, respectively, the overpotential requiring only 7 mV and 269 mV, respectively, at current density of 10 mA cm −2 . (−) Pt 9 @S-Ni(OH) 2 ||Fe 9 @S-Ni(OH) 2 (+) presents a high current density of 531.07 mA cm −2 at cell-voltage of 1.80 V in overall-water splitting (OWS), which is 14.07 times higher than that of the commercial (−) Pt/C||IrO 2 (+) (37.86 mA cm −2 ) system. This work achieves the development of cost-effective and stable electrocatalysts, offering a solution for large-scale and sustainable water-hydrogen conversion.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 7
·1-10
·
IF 5.3
Li Wenhao,Liu Fang,He Yu,Song Gongwu
Sulfur-doped BCNO quantum dots (S-BCNO QDs) emitting green fluorescence were prepared by elemental doping method. The ratiometric fluorescence probe with dual emissions was simply established by mixed S-BCNO QDs with gold nanoclusters (GSH-Au NCs). Because the emission spectrum of Au NCs (donor) at 615 nm overlapped well with the ultraviolet absorption of malachite green (MG), fluorescence resonance energy transfer (FRET) can be achieved. When the concentration of MG increased, the fluorescence intensity ( F 495 ) of S-BCNO QDs decreased slowly, while the fluorescence intensity ( F 615 ) of Au NCs decreased sharply. The fluorescence intensity ratio of F 615 / F 495 decreased with the increase of MG. By plotting the F 615 / F 495 values against MG concentration, a sensitive and rapid detection of MG was possible with a wide detection range (0.1–50 µM) and a low detection limit of 10 nM. Due to the accompanying fluorescence color change from pink to blue-green, it can be used for visual detection. A three dimensional-printing device utilizing digital image colorimetry to capture color changes through the built-in camera, enables quantitative detection of MG with a good linearity between the values of red/green ratio and MG concentrations at the range 1–50 µM. This sensing platform had a range of advantages, including high cost-effectiveness, portability, ease of operation, and high sensitivity. Furthermore, the sensing platform was successfully applied to the detection of MG in real water sample and fish samples, thereby verifying the reliability and effectiveness of this sensing platform in water quality monitoring and food safety. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Yun Wu,Jinwei Wang,Weiyi Zhang,Qiang Zhao,Jinping Li,Guang Liu
Highly efficient and economical oxygen evolution reaction (OER) electrocatalysts are instrumental in the utilization and storage of renewable sources. Here, we introduce a straightforward method for the in situ growth of sulfur-doped iron oxide (S-FeO x ) and two-dimensional (2D) zeolitic imidazole framework-67 (ZIF-67) nanoarrays on three-dimensional (3D) nickel foam (NF), yielding a 3D S-FeO x /ZIF-67/NF electrocatalyst. The distinctive sheet-like structure and porous framework of S-FeO x /ZIF-67/NF significantly increase the electrochemical active surface area. The prepared S-FeO x /ZIF-67/NF exhibits outstanding electrocatalytic OER activity, achieving a remarkably low overpotential of 236 mV at a current density of 100 mA/cm 2 . Furthermore, S-FeO x /ZIF-67/NF demonstrates the capability to deliver industrial-level large current densities, requiring overpotentials of merely 291 and 334 mV to attain current densities of 500 and 1000 mA/cm 2 , respectively. Moreover, it maintains stable operation for over 80 h at a current density of 1000 mA/cm 2 , with the sheet-like structure remaining intact and no significant activity decay observed. This investigation offers a strategic approach for the systematic development and fabrication of OER electrocatalysts suitable for large current conditions.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Xiangdong Shi,Xiaoyun Qin,Xuanyu Yang,Xiangyu Wei,Ying Liu,Sihui Li,Guixia Liu,Jinxian Wang,Xiangting Dong,Fenghua Chen
It is challenging and still difficult to adjust and boost the catalytic performance of photocatalysts via the synergistic achievement of heteroatom doping, vacancies engineering, morphology regulation, and appropriate structural design. Herein, we developed an efficient method to synthesize 3D hierarchical porous BiOI–Bi 2 S 3 S-scheme heterojunction with oxygen vacancies (Ov-BBS) induced by sulfur doping and systematically investigated regulation of oxygen vacancies by sulfur doping and their effects on photocatalytic performance. Results showed that sulfur species promoted the formation of S-scheme heterojunction but depleted oxygen vacancies in Ov-BiOI. The optimal sulfur doped catalyst (Ov-BBS-0.1) exhibited excellent UV–vis light photocatalytic activity towards four representative pollutants, affording removal rate of 97.1 % for MB, 97.6 % for RhB, 99.4 % for Cr(VI), and 92.0 % for TC, respectively, which were higher than those of pristine Bi 2 S 3 , BiOI, Ov-BiOI, Ov-BiOI/Bi 2 S 3 mixture, Ov-BBS-0.05, and Ov-BBS-0.2. Deep characterizations and theoretical studies certified that the four-pronged enhancement strategy of 3D hierarchical porous structure, oxygen vacancies, sulfur doping and the constructed S-scheme heterojunction, not only enriched accessible active sites, but also promoted electronic polarization and modulated electronic structure, resulting in rapid separation and migration of photogenerated carriers. Moreover, considering the excellent stability and cyclic photocatalytic performance, the film prepared by pumping Ov-BBS dispersion was also satisfactory in the practical application of circulating sewage treatment. Overall, the present work provides a novel approach for the design of more photocatalysts with high efficiency.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Hao Du,Rubin Huo,Aoxiang Liu,Yuxin Hui,Bo Shen,Ningyi Li,Yun Ji,Qin Jin,Baobing Zheng,Guoxiang Yang,Zhe Zhang,Qi Wang
Herein, a photo-self-Fenton system of resorcinol-formaldehyde resins/MIL-88A(Fe) (RF/88A) S-scheme heterojunction was successfully established to in-situ generate and activate H 2 O 2 toward tetracycline (TC) degradation and sterilization under visible light illumination. As a result, the 35 %-RF/88A (the mass ratio of RF to 88A was 35 %) can remove most TC and kill approximately 100 % E. coli and S. aureus . Notably, the composites presented superior repeatability and wide pH application range. Fukui index identified the reaction sites of TC molecule and quantitative structure-activity relationship (QSAR) forecasted intermediates toxicity. Density functional theory (DFT) calculations were performed to investigate electron transfer mechanism of the heterojunctions on a molecular scale. Such a S-scheme charge transfer route was also proved by in situ irradiated X-ray photoelectron and electron paramagnetic resonance measurements. In summary, this research innovatively provides deep insights into the in-situ generation and activation of H 2 O 2 and exhibited an environmentally friendly way toward pollutant degradation and sterilization.
✓ 已验证
产品关联
DOI
高影响因子
CHIRALITY
·
2025
·Vol. 37
·期 8
·e70050
·
IF 3
Xiangwen Chen,Xuan Chen,Juan Pan,Shuqi Deng,Qiubing Qin,Qiang Fu,Jiliang Cao
In this work, the silica gel bonded amylose[( S )-α-methylbenzyl carbamate] (CHIRALPAK IH) was chosen as the chiral stationary phase (CSP) for the separation of five quinolone enantiomers by high-performance liquid chromatography (HPLC), namely, ofloxacin, flumequine, nadifloxacin, lomefloxacin, and clinafloxacin. The mobile phase composition, organic modifier, and acid–base additive were systematically investigated for the baseline separation of these five interested quinolones. The optimized mobile phases were n -hexane–ethanol–acetic acid–diethylamine (60:40:0.2:0.2, v / v / v / v ) for ofloxacin and nadifloxacin, n -hexane–ethanol–acetic acid–diethylamine (60:40:0.2:0.2, v / v / v / v ) for flumequine, n -hexane–isopropanol–acetic acid–diethylamine (60:40:0.3:0.3, v / v / v / v ) for lomefloxacin, and n -hexane–ethanol–acetic acid–diethylamine (70:30:0.3:0.3, v / v / v / v ) for clinafloxacin. The interaction forces between the amylose CSP and target quinolones were simulated by computerized molecular docking to study their enantiorecognition mechanisms. The results indicated that hydrogen bonding, π–π stacking, and hydrophobic interactions collectively contributed to the stereoselective binding. The differences in these interaction forces between the quinolone enantiomers, particularly the greater contribution of hydrogen bonding in one enantiomer compared to the other, led to a significant difference in binding energy. This differential binding energy ultimately governed the elution order and enabled chiral recognition of the five quinolone enantiomers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xiao Han,Xiujuan Zhong,Fanpeng Meng,Jinsheng Zhao,Jun Yang,Yongfa Zhu,Qian Xu,Jun Hu,Ningqiang Zhang
Building polymer heterojunctions (PHJs) is a promising way to enhance the performance of single-polymer photocatalysts, but it's still challenging to design the ideal structure with well-matched energy levels and strong interface synergy by precisely tuning the molecular structure of polymer. Herein, two triazine-based conjugated porous polymers (CPPs) were synthesized in advance including TB and TR via linkage unit modulation at the molecular level, and then their PHJs with carbon nitride (g-C 3 N 4 ) nanosheet including TB/CN and TR/CN were successfully constructed by the convenient physical ball milling method. Theoretical calculations, electron paramagnetic resonance (EPR), and in situ X-ray absorption near-edge structure (XANES) spectra show that replacing thiophene rings in TR with phenyl rings in TB changes the PHJ structure from type-I (TR/CN) to an S-scheme (TB/CN) heterojunction. Compared to TR/CN, TB/CN exhibits a stronger internal electric field (IEF), better redox ability, longer exciton lifetime, and improved charge separation and transport. As a result, TB (Wang et al., 2023a (20))/CN achieves a much higher hydrogen evolution rate (HER) of 9.11 mmol g −1 h −1 , which is 1.8 times of TR (Wang et al., 2023a (20))/CN and 6.6 times of pure g-C 3 N 4 . TB (Wang et al., 2023a (20))/CN also shows superior Cr(VI) reduction efficiency (98.5 % in 60 min), outperforming TR (Wang et al., 2023a (20))/CN (82.0 %) and g-C 3 N 4 (21.8 %). This study shows that adjusting the linkage units can effectively tune the interface properties of PHJs, offering a promising strategy for designing efficient polymer-based photocatalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）