BIOSENSORS & BIOELECTRONICS
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2023
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IF 12.6
Wanru Li,Haiyan Wei,Nianlu Li,Shunyu Li,Yaru Liu,Ranran Liu,Wei Zou,Peishan Hu,Zhihu Zhang,Cuijuan Wang
Rapid detection of diquat (DQ) is essential in clinical diagnosis and rescue. Here, we developed a fast, simple-yet-practical detection strategy for the reliable identification and quantification of DQ in biological fluids. Based on surface-enhanced Raman spectroscopy (SERS), point-of-care detection was realized under the acidic condition with gold nanoparticles as the substrate. Under optimal experimental conditions, the detection limits of the strategy were 17.5 ppb and 1.99 ppm in human urine and gastric juice, respectively. High specificity and selectivity of the SERS strategy were demonstrated using common pesticides and coexisting biological substances. The method was also used to detect biofluids from 5 patients and urine samples from 10 healthy volunteers . The results were in high agreement with spectrophotometric and clinical liquid chromatography-mass spectrometry methods. The volume of urine samples required for this technique is merely 20 μL, and no preparation of the samples is required. Compared to traditional methods used in clinical settings, SERS-based methods are capable of real-time measurements that accurately provide rapid detection and response in non-laboratory settings, with great potential for on-site and point-of-care testing.
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Journal of Cleaner Production
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2022
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IF 11.072
Xincheng Jiang,Yanyan An,Yaoyao Huang,Wei Ding,Manli Sun,Hong Li,Huaili Zheng
The residual antibiotics in the environment will pose a threat to the environment and human health. Thus, it is imperative to develop a smart water treatment material to remove and detect antibiotics from aqueous environment simultaneously. In this study, magnetic Cu–Ni–S@Ni foam was synthesized by liquid phase vulcanization method to in-situ load Cu–Ni–S nanostructures on the surface of Ni foam. The novelty of this material is the combination of adsorption-flocculation technology and semi-quantitative detection technology. Batch experiments showed that Cu–Ni–S@Ni foam has a high removal rate of norfloxacin (NOR) (96.92%), wide pH adaptability (pH = 4.0–10.0) and strong ion interference resistance (0.1–100 mmol/L). According to the Langmuir isotherm , the removal capacity can reach 417.4 mg/g at 25 °C, which is much higher than that of other water treatment agents reported in most studies. Characterization analysis indicated that the main removal mechanisms are surface complexation, cation bridging, electrostatic attraction , precipitation and flocculation . Transmission FTIR detection experiments showed that NOR on Cu–Ni–S@Ni foam has easily recognizable FTIR fingerprints; the intensity of characteristic peaks roughly reflects the concentration information of NOR to some extent. This semi-quantitative detection method, requiring simple operation without the fabrication of KBr tablet, has a wide linear range (5–100 mg/L) and a low limit of detection (4.6 mg/L). Therefore, Cu–Ni–S@Ni foam can be used for simultaneous removal and semi-quantitative detection of NOR in wastewater. It has potential application value in wastewater treatment and water quality monitoring.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
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IF 6.364
Zexuan Sui,Yan Sun,Yue Jing,Ci Wang,Yao Zhu,Sen Qian,Jing Ren,Jianzhong Zhang
We report the first study on in-situ co-growth of biphasic CsPbBr 3 and Zn-Cd-S quantum dots (QDs) in borosilicate glass , and provide explicitly evidence of their morphology and nanoscale distribution. Such biphasic QDs co-doped nano-glass composites show unique green and red dual-band emissions. By changing the thermal heating scheme, the fluorescence intensity ratio (FIR) and thus the apparent color can be widely adjusted. The FIR can be also fine-tuned simply by varying the excitation wavelength. Based on the FIR, a self-calibrated X-rays dosimeter is constructed, which also possesses a good thermal stability. Although the X-rays induced scintillation weakening occurs, it can be readily recovered by post-thermal-annealing.
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LANGMUIR
·
2022
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IF 4.331
Yirui Zhao,Hang Yang,Hongshun Hao,Fuxiao Zhu,Gongliang Zhang,Jingran Bi,Shuang Yan,Hongman Hou
The removal of organic dyes and pathogenic bacteria from contaminated water remains a significant challenge. In the present study, S-type heterojunction Ag2MoO4/ZnFe2O4 (AMO/ZFO) composite nanofibers were synthesized by electrospinning and co-precipitation and fabricated into photoanodes. It is found that the constructed S-type heterojunction of AMO/ZFO composites effectively inhibits the recombination of photogenerated carriers, in addition to the benefits of more exposed active sites and a greater specific surface area. When several properties are improved, AMO/ZFO composites exhibit excellent photoelectrocatalytic performance. The results demonstrate that under visible light irradiation, the photoelectrocatalytic degradation rate of AMO/ZFO-3 to methylene blue reached 76.2% within 50 min, and the killing rate of Salmonella was 83.6% within 80 min. The enhanced photoelectrocatalytic activity was due to the synergy of both electrochemical and photocatalytic effects. More importantly, after four testing cycles, AMO/ZFO-3 still has a better ability to kill pathogenic bacteria and degrade organic dyes due to its high stability. This work provides a feasible method for oxidizing organic dyes and pathogenic bacteria.
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ENVIRONMENTAL TECHNOLOGY
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2022
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IF 3.475
Lu Wang,Yaqun Yu,Guoqiang Liu,Baowei Hu,Junhe Lu
Brominated flame retardants (BFRs) are a group of contaminants of emerging environmental concern. In this study, systematic exploration was carried out to investigate the degradation of tetrabromobisphenol S (TBBPS), a typical emerging BFRs, by thermally activated persulfate (PDS) oxidation. The removal of 5.0 μM TBBPS was 100% after 60 min oxidation treatment under 60°C. Increasing the temperature or initial PDS concentration facilitated the degradation efficiency of TBBPS. The quenching test indicated that TBBPS degradation occurred via the attack of both sulphate radicals and hydroxyl radicals. Natural organic matter (NOM) decreased the removal rate, however, complete disappearance of TBBPS could still be obtained. Six intermediate products were formed during reactions between TBBPS and radicals. Transformation pathways including debromination, β-Scission, and cross-coupling were proposed. Brominated disinfection by-products (DBPs) in situ formed during the degradation of TBBPS were also investigated, such as bromoform and dibromoacetic acid. The presence of NOM reduced the formation rates of brominated DBPs. Results reveal that although thermo-activated PDS is a promising method for TBBPS-contaminated water, it can lead to potential brominated DBPs risks, which should be paid more attention to when SO4•−-based oxidation technology is applied.
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COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2022
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IF 9.463
Xiaowen Wang,Paul Smith,Zhe Qiang,Qingbao Guan,Zhengwei You,Changhuai Ye,Meifang Zhu
Segregated conductive composites based on all-aromatic liquid crystal polymers (LCPs) are ideal material candidates for electromagnetic interference (EMI) shielding. However, grand challenges still remain for constructing segregated LCP composites due to the sharp viscosity decrease at crystal-to-nematic transition temperature and the very low melt-viscosity of LCPs. Herein, conductive composites based on all-aromatic multiblock poly(esterimide)s (BPEI) and multilayer graphene (MLG) with well-defined segregated structure were fabricated by solid-state compression molding with a broad processing window, which was enabled by the appropriate viscosity at the rubbery state originating from the two very distinct glass transition temperatures of the as-synthesized BPEI block copolymer . The segregated BPEI/MLG composite with 5.0 wt% MLG loading achieves an ultrahigh electrical conductivity of 313.5 S/m and a high EMI shielding effectiveness of 62.2 dB at a thickness of only 2.3 mm. Moreover, the segregated BPEI/MLG composites exhibit high thermal stability and outstanding flame retardancy.
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JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 41
·19431-19446
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IF 4.682
Wang Shouting,Chen Ye,Zhao Yaling,Wei Gangya,Li Dongliang,Liu Xupo
Oxygen reduction reaction (ORR) is a crucial step for Zn-air batteries (ZABs), which requires low-cost yet efficient catalysts to satisfy the practical application. Heteroatom-doped, especially N, S-doped carbon, has attracted intensive attention as promising ORR catalysts. However, the issues of devitalized micropore channels covered by reaction intermediates and unstable configuration of N, S heteroatoms obtained by post-doping treatment have largely hindered the development of carbon-based catalysts. Herein, mesopore-dominated N, S co-doped hierarchical carbon has been constructed by the hard-soft (SiO 2 –ZnCl 2 ) template strategy based on waste biomass. The optimal catalyst (NSC-PT-0.1) exhibits a mesopore-dominated hierarchical porous structure with high S BET (2357.55 m 2 g −1 ) and N, S content (~ 2.32 at.%), resulting in comparable ORR activity in acid ( E 1/2 = 0.69 V) and alkaline ( E 1/2 = 0.83 V) media to Pt/C. Moreover, different biomass precursors of Carrot, Whorled stonecrop, and Ginkgo leaf have been explored to verify the generality of hard-soft template strategy. When NSC-PT-0.1 is applied as the air electrode, the assembled ZAB exhibits high power density of 155.55 mW cm −2 and long-term cycling stability over 216 h. Therefore, this work provides a versatile hard-soft template strategy to synthesize efficient ORR catalysts for ZABs application through the resource utilization of biomass. Graphical abstract Mesopore-dominated N, S co-doped carbon is synthesized by one-step pyrolysis of waste biomass and SiO 2 –ZnCl 2 hard-soft templates. The optimal catalyst exhibits excellent ORR performances in alkaline and acid media as well as promising Zn-air battery application.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2023
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IF 4.5
Fangfang Shi,Zhengchu Zhang,Yongjie Xu,Chao Yang,Jianhui Qiu,Jiachi Liao,Limin Zang
Developing sustainable carbon materials from biomass for supercapacitors is a promising solution to alleviate energy and environmental pressures. In this paper, novel N/S co-doped carbon nanosheets derived from sugarcane processing by-products are proposed. Flexible and binder-free electrodes based on carbon felt and sulfonated potassium fulvic acid were prepared by a simple impregnation-carbonization method. The maximum areal specific capacitance, power density and energy density of the symmetric supercapacitor are 409.9 mF cm −2 (1 mA cm −2 ), 0.92 mW cm −2 and 184.5 μWh cm −2 , respectively. The operating voltage of the device increases to 1.8 V by using LiCl electrolyte. After 10,000 cycles, the capacitance remains 90 % of its initial value. Besides, the device possesses good flexibility, which can be bent at different angles and has a capacitance retention of 92.3 % after 5000 bending cycles. The supercapacitor is of great significance for the recovery of crop processing by-products to prepare flexible electronic devices.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
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IF 6.76
Xiaojuan Feng,Yanlong Shi,Jingmei Liang,Wei Li,Xuyuan Gou
Exploring high activity, stable and low-cost electrocatalysts are of great importance for high-efficient hydrogen production via water splitting. Herein, a cactus-like Fe, P co-doped CoNi-S array was constructed via facile hydrothermal reaction and subsequently sulfuration and phosphorization process. Benefiting from the strong synergistic effects of different components, high conductivity of bimetallic sulfide, 3D cactus-like architecture with rich channels for mass/charge transport, and Fe and P co-doping with electron structure regulation, the as-prepared Fe, P-NiCo 2 S 4 /NF presents superior electrocatalytic activity with low overpotentials of 139 and 290 mV to drive the current density of 10 and 40 mA cm −2 for HER and OER, respectively. Meanwhile, it also manifests the distinguished durability for over 60 h in alkaline media. Notably, when integrating in a two-electrode electrolytic cell with Fe, P-CoNi-S, a reduced operation voltage of 1.55 V is required to reach 10 mA cm −2 , which is superior to precious metal-based Pt/C/NF//RuO 2 /NF counterparts. Impressively, it can also be driven by sustainable solar and thermal energies motivated Stirling engine. This work offers a universal strategy for designing high-activity and durable electrocatalysts by dual doping heteroatoms and synergistic interface engineering.
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 8
·3745-3757
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IF 3.3
Litao Jia,Pei Yu,Ying Dong,Yonglei Xing,Juan Peng,Gang Ni,Xiaoyong Jin
The decomposition efficiency of refractory organic pollutants depends strongly on the characteristics of the photoanode semiconductors in the photoelectrocatalytic (PEC) process. The selection of superior materials with excellent PEC efficiency is a challenge in the practical application of PEC oxidation technology. Herein, a novel S-Co3O4/Bi2WO6 heterojunction photoanode was fabricated using a simple hydrothermal procedure. Compared with Bi2WO6 nanoflowers, the as-prepared S-Co3O4/Bi2WO6 photoanode had a large electroactive surface area, low charge transfer resistance, strong light absorption ability, and high separation efficiency for induced photogenerated electron/hole pairs (e−/h+). This relies on the fact that S doping not only controls the morphology of Co3O4 but also changes its intrinsic electronic structure to improve the interlayer polarization. Notably, the Z-scheme heterojunction formed by the combination of S-Co3O4 and Bi2WO6 not only enhances the e−/h+ separation efficiency but also results in a stronger redox ability than that of pure Bi2WO6. In addition, reactive species trapping experiments and electron spin resonance tests demonstrated that the S-Co3O4/Bi2WO6 photoanode plays a dominant role in the degradation of tetracycline (TC) by ˙O2− and ˙OH radicals. Therefore, the prepared S-Co3O4/Bi2WO6 photoanode exhibits better PEC performance than Co3O4, S-Co3O4 and Bi2WO6 in the degradation of TC. The optimized S-Co3O4/Bi2WO6 composite showed a degradation rate of 87.4% in 30 mg L−1 TC solution. This work provides a new strategy for the construction of efficient photoelectroanodes.
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INTERNATIONAL BIODETERIORATION & BIODEGRADATION
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2022
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IF 4.907
Long Zhang,Man Song,Zhenbo Mao,Yuan Liu,Feng Li,Jiandong Jiang,Kai Chen
Dichlorprop [( R , S )-2-(2,4-dichlorophenoxy)propanoic acid], a chiral herbicide belonging to phenoxyalkanoic acid herbicides, is extensively used around the world, and is frequently detected in various habitats. Although ( S )-dichlorprop has no herbicidal activity, its toxicity and ecological risk are higher than ( R )-dichlorprop. In our previous studies, the isolated strain Sphingopyxis sp. DBS4 was confirmed to mineralize both ( R )-dichlorprop and ( S )-dichlorprop, but the key genes responsible for the initial degradation of ( R )-/( S )-dichlorprop were still unclear. Here, based on genome sequencing and enzyme purification , a new dioxygenase gene, spoA , responsible for the initial transformation of ( S )-dichlorprop to 2,4-dichlorophenol and pyruvate was cloned from the rac -dichlorprop-utilizing strain of Sphingopyxis sp. DBS4. SpoA, an α -ketoglutarate-dependent dioxygenase, exhibited low amino acid sequence identity to the reported ( S )-dichlorprop-transforming dioxygenase SdpA (34.8%), and showed enantioselective activity toward ( S )-enantiomers of dichlorprop and mecoprop, but no activity toward the corresponding ( R )-enantiomers. The K m value of SpoA for ( S )-dichlorprop was 134.3 μM, and the k cat / K m was determined to be 7.5 × 10 −2 μM −1 s −1 . Molecular docking and site-directed mutagenesis showed that two residues of SdpA, Lys101 and Asp119, are the key sites for the enantioselective transformation of ( S )-dichlorprop. Our study identifies a new dioxygenase for the enantioselective transformation of ( S )-dichlorprop and deepens our understanding of the microbial catabolism of chiral phenoxyalkanoic acid herbicides.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Chaohu Xiao,Qimeige Hasi,Shanshan Wang,Yuhan Zhang,Hailing Li,Lu Zhang,Lihua Chen,An Li
Solar steam generation (SSG) is one of the promising technologies for seawater desalination and contaminated water purification . However, SSG devices are always restricted by poor insulation performance, insufficient solar spectrum absorption and serious salt-fouling. Here, a double-layered novel SSG system was fabricated by using poly(ionicliquid)s gels with hollow SiO 2 microspheres in-situ doping to enhance the thermal insulation of lower layer, and co-modified the top surface by polypyrrole (PPy) and silver particles to strengthen the solar absorption capability. Benefiting from the low thermal conductivity (0.082 W m −1 k −1 ), strong light absorption ( ca . 96%) and adequate water transport capability of poly(ionic liquid)s gels. As SSG device, a superb photothermal conversion efficiency of 90.5% is achieved under 1 sun illumination. Moreover, the poly(ionic liquid)s gels based SSG system also shows good desalination performance in artificial sea water and high concentration brine, and the purified water from artificial seawater can achieve the WHO's standard for drinking water . Therefore, this work combined attractive in-situ doping and co-modified strategies for fabricating high performance and thus shows significant potential for real applications.
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