MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 11
·1-10
·
IF 6.408
Fan Ru,Tian Jinrong,Wang Huili,Wang Xuedong,Zhou Peipei
By employing NH 2 -MIL-88 as a template, we synthesized the intermediate Fe@CN under high-temperature calcination and further fabricated the FeS 2 @CN nanocomposites in the presence of sulfur powder. Under varying temperatures (300–600 °C) and Fe@CN-to-S ratios (1:3–6), FeS 2 @CN 500-5 nanocomposites had the highest peroxidase-mimetic activity. Under optimized conditions (incubation temperature 40 °C; solution pH 4.0 and nanocomposite concentration 10 μg/mL; 652-nm absorption), the Michaelis-Menten constant ( K m ) of FeS 2 @CN was much lower than that of horseradish peroxidase (HRP), therefore demonstrating that it had a higher affinity for both chromogenic substrates than conventional HRP. The limits of detection for H 2 O 2 and glucose were 0.15 and 0.30 μmol/L, respectively, and the recoveries for glucose were 91.8–103% with RSDs <5.2%. The novelty of this study lies in (1) the FeS 2 @CN was confirmed to possess stronger enzyme-mimetic activity than its precursors (NH 2 -MIL-88 and Fe@CN); (2) the enhanced activity resulted from the unsaturated sites of N and S doping and the plentiful defects on the porous carbon surface; and (3) free radical trapping experiments evidenced that •OH played a major role in the catalytic reaction, while h + and •O 2 − simultaneously participated in the catalytic process. These convincing performance metrics lead us to postulate that the FeS 2 @CN-based colorimetric biosensor provides a promising approach for several real-world applications, such as point-of-care diagnosis and workplace health evaluations. Graphical abstract
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 6
·4092-4103
·
IF 4.682
Chen Zongchen,Jiang Jiwei,Wang Xin,Zhang Hui,Song Bo,Dong Bin
Inspired by the swarming behavior of various bacteria in nature, light-driven micromotor with collective behavior has attracted a great deal of attention, which will be a valuable tool to understand the cooperation and communication between bacterial populations and will contribute to the creation of reconfigurable microrobots and the cooperative transportation of large cargoes. However, it is still challenging to modulate the micromotors’ collective behavior based on local interaction and communication. Herein, we develop a light-powered BiVO 4 -based micromotor with self-propulsion and dynamic ‘predator-bait’ collective behavior, which is based on the photocatalytic reaction of BiVO 4 . The BiVO 4 -based micromotor has great potential in the field of organic pollutant degradation with enhanced apparent rate constant (0.076 min −1 ) which originates from the dynamic ‘predator-bait’ behavior.
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2022
·Vol. 12
·期 1
·1-8
·
IF 4.996
Li Hongchuan,Kong Deming,Zhang Borui,Kalkhajeh Yusef Kianpoor,Zhao Yingying,Huang Jieying,Hu Hongxiang
The use of degradable chelating agents to facilitate phytoextraction is a promising low-cost method for the remediation of heavy metal-contaminated soils. However, there are few studies on how plants and soils respond to the chelating agents. In this study, the responses of French marigold ( Tagetes patula L.) and soil cadmium (Cd) to the chelator tetrasodium glutamate (GLDA) was investigated in a 180 d field trial. Five GLDA treatments (0, 292.5, 585, 1170, and 2340 kg hm −2 ) were carried out in a Cd-contaminated soil (0.47 mg kg −1 ) under French marigold plantation. The results showed that the application of GLDA promoted the transformation of other forms of Cd in soil to exchangeable state, and the exchangeable Cd and Fe–Mn oxide bound state increased by 42.13% and 32.97% ( p < 0.05), respectively. The cell wall Cd accumulations significantly increased 9.39% ( p < 0.05) and the percentages of soluble fractions increased by 460.33% ( p < 0.05). Furthermore, increases occurred in soil pH, as well as DOC and DTPA-Cd contents with increasing the total amount of GLDA. The composite application of GLDA (2340 kg hm −2 ) with French marigold reduced the total soil Cd content by 7.59% compared with the soil background. Altogether, results of this study suggested that the application of GLDA can effectively activate soil Cd and enhance the capability of French marigold for the remediation of Cd-contaminated soils.
✓ 已验证
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2019
·Vol. 411
·期 18
·4159-4166
·
IF 3.286
Hu Yechen,Li Yang,Gao Hang,Jiang Bo,Zhang Xiaodan,Li Xiao,Wu Qiong,Liang Zhen,Zhang Lihua,Zhang Yukui
Because of structural flexibility and acid lability, the identification of phosphorylated lysine (pLys) peptides is a great challenge. We report here a cleavable hydrophobic derivatization (CHD) strategy for the enrichment and identification of pLys peptides. First, 2,5-dioxopyrrolidin-1-yl-3-(decyldisulfanyl)propanoate was synthesized to react with dephosphorylated lysine peptides, and then the derived peptides were captured by a C 18 column, followed by cleavage of the hydrophobic chain, with the specific label left on the target peptides for further identification. By CHD, the enrichment of pLys peptides from interfering peptides (1:1000 mass ratio) was achieved. Furthermore, CHD was applied to screen the pLys targets from Escherichia coli lysates, and 39 pLys sites from 35 proteins were identified. Gene Ontology (GO) analysis showed that these proteins played vital roles in catabolism, metabolism, biogenesis, and biosynthetic processes. All these results demonstrate that CHD might pave the way for comprehensive profiling of the pLys proteome.
✓ 已验证
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 4
·1-7
·
IF 5.833
Liu Pingkun,Meng Hui,Han Qian,Zhang Gui,Wang Cun,Song Li,Fu Yingzi
A novel internal standard electrochemiluminescence (ECL) sensor has been designed for the detection of ascorbic acid (AA). The adopted dual-emission luminophore (NSGQDs-PEI-luminol-Pt) is composed of nitrogen and sulfur double-doped graphene quantum dots (NSGQDs, as the main luminophore), luminol (as the auxiliary luminophore and internal standard), platinum nanoparticles (Pt NPs, as the co-reaction accelerator), and polyetherimide (PEI, as the linker of NSGQDs and luminol). The results suggest obviously enhanced ECL intensities by the Förster resonance energy transfer (FRET) between luminol (donor) and NSGQDs (acceptor). In this sensing system, the cathodic ECL intensities of NSGQDs (ECL-1, −1.8 V vs. Ag/AgCl) gradually decrease with increasing concentration of AA, while the anodic ECL intensities of luminol (ECL-2, 0.3 V vs. Ag/AgCl) almost remain essentially constant at a potential window from −2.0 to 0.4 V. The natural logarithm of the ratio between ECL-1 and ECL-2 (ln I (ECL-1/ECL-2) ) shows a good linear relationship with AA concentration ranging from 10 to 360 nM. The regression equation is ln I (ECL-1/ECL-2) = − 0.0059 c AA + 3.55 ( R 2 = 0.992) with a limit of detection of 3.3 nM. Such sensor has also been applied for monitoring AA in human serum. The recovery range was 96.5–105.3% and the relative standard deviation was 1.3–3.3%. Graphical abstract
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POROUS MATERIALS
·
2023
·Vol. 30
·期 5
·1643-1652
·
IF 2.6
He Zhaocai,Gu Yuke,Liu Huaifei,Sun Yating,Liu Gonggang,Chang Shanshan,Bai Yuanjuan,Hu Jinbo
In recent years, wood with unique porous structure, renewability, low cost and easy processing has attracted increasing attentions, which are frequently used as a structural functional material in energy, environment, catalysis and other applications. For energy storage/conversion, high electrical conductivity of wood is desirable for its feasible application. However, carbonization treatment as commonly used method to improve the conductivity of wood will sacrifice its mechanical strength. Here, reduced graphene oxide as excellent conductive coating has been used to improve electrical conductivity of pristine wood without any carbonization process. After graphene oxide reduction process (RGO), fir wood capillary (wood lumen) skeleton with RGO conductive layers (RGO/Fe 3+ /wood) endows wood with decent anisotropic conductive. Compared with the untreated wood slice, the conductivity of RGO/Fe 3+ /wood slice is significantly increased. Besides, RGO/Fe 3+ /wood has been proved to be an effective substrate of Au catalyst as electrode in electrochemical reduction of CO 2 , which is superior to commercial carbon paper. Conductive wood slice modified by RGO shows potential application prospects in the fields of good mechanical strength required and flexible wood-derived functional devices.
✓ 已验证
DOI
高影响因子
Waste and Biomass Valorization
·
2020
·Vol. 12
·期 9
·4805-4823
·
IF 2.851
Shrestha Sarita,Kognou Aristide Laurel Mokale,Zhang Jin,Qin Wensheng
The plant matter, lignocellulosic biomass, is a renewable and inexpensive abundant natural resource in the world. The development of inexhaustible energy rehabilitated from agricultural waste is an alternative for fossil fuel to reduce CO 2 emission and prevent global warming. The amount of waste generated has a direct correlation with the human population. Thus, the waste generated by the community is being added to the environment as the municipal, agricultural waste, and waste produced from forest-based industries. Moreover, there are high possibilities of having environment-friendly valuable bio-based products, including biofuels, biogas, enzymes, and biochar from biomass without competing with the food supply chain. However, only a few or limited kinds of products are produced industrially. This review highlights the significance of lignocellulosic biomass. It describes the different valuable products like biochemicals, biochar, enzymes, single-cell protein, dye dispersant, and bioplastic from lignocellulosic biomass, emphasizing their applications briefly. Besides, this review also highlights the pretreatment of biomass, mainly focusing on biological pretreatment. Natural biomass utilization would lead to solving the energy shortage, food security issues, and obstacles for developing technological solutions in agriculture, agro-processing, and other related manufacturing sectors. Graphic Abstract
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2021
·Vol. 328
·期 1
·137-147
·
IF 1.371
Wang Zhongtang,Xie Yun,Lin Jinxian,Li Zejun,Tan Zhaoyi
New method was developed to analyze Pu and Am sequentially for soil and sediment by inductively coupled plasma mass spectrometry (ICPMS). The developed method uses conc. HNO 3 to leach Pu and Am, Fe(OH) 3 coprecipitation to remove alkali and alkaline metals, extraction chromatographic separation using UTEVA, DGA and TEVA resins to remove interfering elements (IEs) and separate Pu and Am from each other, and sector field-ICPMS to measure Pu and Am. The analysis of four standard reference materials showed that both Pu isotopes and 241 Am were accurately determined by this method, as a result of its excellent decontamination ability of IEs. Especially the high decontamination factor of Pu [DF(Pu), 4.2 × 10 2 ] in Am fraction and high DF(Am) (7.0 × 10 3 ) in Pu fraction sufficiently eliminated the cross interference between 241 Pu and 241 Am in ICPMS measurement. In addition, stable and high chemical recoveries were achieved for Pu (71–91%) and Am (70–88%). The low LODs of Pu isotopes, short analytical time (14 h) and high DFs of IEs allows this method to sequentially analyze Pu and Am, for both global fallout and nuclear accident sourced samples.
✓ 已验证
DOI
高影响因子
IONICS
·
2019
·Vol. 25
·期 12
·5919-5928
·
IF 2.289
Bi Songhu,Chen Chuntan,Zhang Qiyi,Li Jingde,Li Meimei,Xian Yupei,Shui Yonggang,Yao Yongyi
The oxygen evolution reaction (OER) electrocatalysts are of significances for energy storage or conversion. However, the preparation of excellent electrocatalysts and their utilizations are still great challenges. In this paper, the in situ enrichment of cobalt by sulfate-reducing bacteria (IEC-SRB-Xs) with more uncovered by-production was successfully cultured and carbonized to serve as the OER electrocatalysts triumphantly. The carbonized remains of IEC-SRB-1.00 (named SRB-1.00) showed an excellent potential 1.553 V at current density 10 mA cm −2 , and Tafel slope was 47 mV dec −1 . Moreover, the SRB-1.00 performed constant activity and without any decline of activity after 24 h of OER testing. In addition, the SRB-1.00 exhibited high electron transfer efficiency of 0.803. Therefore, The IEC-SRB-Xs have potential to be a new approach to prepare OER electrocatalyst for water oxidation.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Yang Xu,Zhang Bao,Tian Yao,Wang Yao,Fu Zhiqiang,Zhou Dong,Liu Hao,Kang Feiyu,Li Baohua,Wang Chunsheng,Wang Guoxiu
Rechargeable halide-ion batteries (HIBs) are good candidates for large-scale due to their appealing energy density, low cost, and dendrite-free features. However, state-of-the-art electrolytes limit the HIBs’ performance and cycle life. Here, via experimental measurements and modelling approach, we demonstrate that the dissolutions in the electrolyte of transition metal and elemental halogen from the positive electrode and discharge products from the negative electrode cause the HIBs failure. To circumvent these issues, we propose the combination of fluorinated low-polarity solvents with a gelation treatment to prevent dissolutions at the interphase, thus, improving the HIBs’ performance. Using this approach, we develop a quasi-solid-state Cl-ion-conducting gel polymer electrolyte. This electrolyte is tested in a single-layer pouch cell configuration with an iron oxychloride-based positive electrode and a lithium metal negative electrode at 25 °C and 125 mA g –1 . The pouch delivers an initial discharge capacity of 210 mAh g –1 and a discharge capacity retention of almost 80% after 100 cycles. We also report assembly and testing of fluoride-ion and bromide-ion cells using quasi-solid-state halide-ion-conducting gel polymer electrolyte.
✓ 已验证
DOI
PubMed
高影响因子
IONICS
·
2023
·Vol. 29
·期 7
·2665-2678
·
IF 2.8
Zou Kun,Cai Zehua,Ke Xiang,Wang Keliang,Tan Xiaoqing,Luo Dandan,Huang Fang,Wang Chengyan,Cheng Jinke,Xiao Rengui
To improve the sinterability, a new LATP-x wt% LiBiO 3 composite solid electrolyte was fabricated by adding LiBiO 3 to a NASICON-type Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 (LATP) solid electrolyte synthesized by the sol–gel method. The results showed that the liquid phase formed by the LiBiO 3 additive promoted grain growth during the sintering process, which led to structural stability and an increased relative density of LATP. When the LiBiO 3 addition amount was 2 wt%, the relative density was 94%, and the bulk ionic conductivity was 2.91 × 10 −4 S cm −1 . In addition, to improve the interfacial instability between the solid electrolyte and lithium metal, we prepared a PPS/LATP-LiBiO 3 /PPS composite solid electrolyte with a sandwich structure using a polymer PVDF-HFP-PEO-SN (PPS) cladding method to construct an LFP/SSCEs/Li all-solid-state battery. The electrical property test results showed that the all-solid-state battery still had 92% discharging capacity and nearly 100% coulombic efficiency after 50 cycles at 25 °C and 0.1 C.
✓ 已验证
DOI
高影响因子
3 Biotech
·
2021
·Vol. 11
·期 6
·1-14
·
IF 2.406
Appu Manikandan,Lian Zhifeng,Zhao Dengqi,Huang Jianying
In this study, we prepared chitosan (CS)-coated iron oxide (Fe 3 O 4 ) nanocomposites (NCs) by employing the aqueous leaf extract of Brassica oleracea L. and evaluated its antimicrobial potential. The characterization of hybrid CS-Fe 3 O 4 NCs was performed using Fourier-transform infrared spectroscopy (FTIR) analysis to evaluate the chemical bonding of chitosan to nanoparticles (NPs). X-ray photoelectron spectroscopy (XPS) studies revealed the presence of oxidation state elements Fe 2p, O 1s, N 1s, and C 1s, and the zeta potential analysis was found to have well-colloidal stability (+ 76.9 mV) of NCs. Transmission electron microscopy (TEM) analysis determined that CS-Fe 3 O 4 NCs were spherical with an average particle size of 27 nm. The X-ray diffractometer (XRD) spectrum ascertained the crystallinity of the hybrid NCs and the vibrating sample magnetometer (VSM) inferred the ferromagnetic behavior of the synthesized NCs. Furthermore, the significant antibacterial efficacy of NPs was demonstrated against foodborne bacterial pathogens, such as Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ), and the highest zone of inhibition was observed to be 11.5 mm and 13.5 mm in CS-Fe 3 O 4 NCs, respectively. In comparison with Fe 3 O 4 NPs, synergistic impacts of CS-Fe 3 O 4 NCs displayed great antibacterial potential as exhibited by a clearly enlarged zone. Thus, CS-Fe 3 O 4 NCs could be used as efficacious antimicrobial agents in food packaging and food preservation fields.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）