JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2023
·Vol. 38
·期 2
·274-279
·
IF 1.6
Hao Zhenbang,Tian Qihang,Cao Shiyi,Han Xiaoyu,Zhang Jihong,Xie Jun,Zhao Xiujian
Novel hollow Au Ag alloy nano urchins were synthesized via Ag seeds growth method, and self-assembly coated on the wall and end-tip of silica fiber for fiber probe fabrication. The nano urchins homogeneously distributed on fiber surface because of fiber silanization. The sizes and tip sharpness of the nano-urchins could be controlled by Ag seeds. The elements distribution analysis indicated there was high Ag content in tip-top for better surface enhance Raman scattering performance. The detectable concentration could be as low as 10 −8 M using crystal violet molecules as analyte. Moreover, the fiber probes were stable in air, due to Au in the alloy. This fiber probe could be used for low content single molecular analysis.
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Nano Research
·
2023
·Vol. 16
·期 7
·8871-8881
·
IF 9.9
Zhang Kunfeng,Chen Hongxia,Pei Wenbo,Dai Hongxing,Li Junshan,Zhu Yongfa
Herein, a series of three-dimensionally ordered macroporous (3DOM) Bi 4 O 5 Br 2 photocatalysts with different macropore sizes were successfully fabricated via a polymethyl methacrylate (PMMA) template method. The photocatalytic activity for phenol degradation over 3DOM Bi 4 O 5 Br 2 first increased and then decreased with the rise in macropore size. Specifically, 3DOM Bi 4 O 5 Br 2 -255 (macropore diameter ca. 170 nm) exhibits the best photocatalytic activity in the static system, which is about 4.5, 7.3, and 11.9 times higher than those of bulk Bi 4 O 5 Br 2 , Bi 2 WO 6 , and g-C 3 N 4 , respectively. Meanwhile, high phenol conversion (75%) is also obtained over 3DOM Bi 4 O 5 Br 2 -255 in the flow system under full spectrum irradiation. Furthermore, 3DOM Bi 4 O 5 Br 2 -255 also shows strong mineralization capacity owing to the downward shift of valance band position (0.15 V) as compared with Bi 4 O 5 Br 2 . Total organic carbon (TOC) removal rate over 3DOM Bi 4 O 5 Br 2 -255 (62%) is much higher than that of Bi 4 O 5 Br 2 (17%). The enhancement in photocatalytic performance of 3DOM Bi 4 O 5 Br 2 -255 is attributable to its better phenol adsorption, O 2 activation, and charge separation and transfer abilities. This work combines the advantages of 3D structure and surface dangling bonds, providing new possibilities for designing highly efficient photocatalysts for pollutants removal.
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CATALYSIS LETTERS
·
2023
·
IF 2.8
Liu Xinyu,Xu Jing,Li Faqin,Liu Zhenlu,Xu Shengming
With the increasing scarcity of resources, the search for green and available energy has become an urgent need. Among them, photocatalytic decomposition of water to hydrogen production has been widely studied. According to zeta potential and XRD characterization, NiCo2O4 and CuS were successfully reassembled by electrostatic self-assembly to construct S-scheme heterojunction induced by built-in electric site, which can accelerate the reaction. At the same time, under simulated visible light irradiation, the composite catalyst can rapidly decompose aqueous triethanolamine solution to produce hydrogen. The composite catalyst has high photocatalytic activity and shows a durable and efficient hydrogen generation effect. By studying the photogenerated carrier separation and transfer of the catalyst, the results show that the composite catalyst can accelerate the photogenerated carrier separation and transfer, so that it can participate in the photocatalytic reaction faster. It provides various insights into the construction of different heterojunctions in binary composite catalysts. Graphical Abstract
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 6
·2135-2142
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IF 1.6
Chen Lanhua,Chen Bin,Weng Zhehui,Gao Xudong,Shen Binqing,Yan Hui,Chen Qi,Li Yuhao,Diwu Juan
The stable porous material capable of exchanging external ions has promising potential in sorption and separation for radioactive nuclides. Herein, an in situ hydrothermal synthesis successfully incorporates potassium ions into a three-dimensional anionic uranyl phosphonate framework ( UPF , 1 ), which endows the porous framework with a particular ion-exchange capacity towards alkali and alkali earth ions. Remarkably, framework 1 is tolerant to high temperature, acidity, and salinity, presenting high stability and thus allowing applications in multiple scenarios with harsh conditions. Graphical abstract
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 25
·67290-67302
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IF 5.8
Chen Zewen,Zhi Yunfei,Li Wenlong,Li Shuangjiang,Liu Yi,Tang Xiaoning,Hu Tianding,Shi Lan,Shan Shaoyun
Nitrogen-rich organic polymer poly(chloride triazole) (PCTs) was synthesized by a one-step method as metal-halogen-free heterogeneous catalyst for the solvent-free CO 2 cycloaddition. PCTs had abundant nitrogen sites and hydrogen bond donors, exhibited great activity for the cycloaddition of CO 2 and epichlorohydrin, and achieved 99.6% yield of chloropropene carbonate under the conditions of 110 ℃, 6 h, and 0.5 MPa CO 2 . The activation of epoxides and CO 2 by hydrogen bond donor and nitrogen sites was further explained by density functional theory (DFT) calculations. In summary, this study showed that nitrogen-rich organic polymer is a versatile platform for CO 2 cycloaddition, and this paper provides a reference for the design of CO 2 cycloaddition catalysts. Graphical abstract
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 12
·1-20
·
IF 2.8
Aghazadeh Mustafa,Foratirad Hamzeh
In this paper, porous graphene (PG)/functionalized multiwalled carbon nanotubes (f-MWNTs) composite was first synthesized through a catalytic chemical vapor deposition (CCVD) followed by hydrothermal procedure. The prepared f-MWNTs/PG composite was then embedded into Ni foam (NF) via direct electrophoretic deposition, and Ni(OH) 2 nanoplates were simultaneously deposited on the surfaces of both porous graphene and f-MWNTs through a simple electrochemical deposition. The obtained Ni(OH) 2 @f-MWNTs-PG deposit was characterized through XRD, FT-IR, Raman, DSC-TGA, BET, FE-SEM, and TEM techniques. These analyses results verified that β-Ni(OH) 2 nanoplates uniformly anchored onto both components of the electrodeposited composite. The charge storage ability of the fabricated Ni(OH) 2 @f-MWNTs-NPG/NF was tested as a binder-free supercapacitor electrode through cyclic voltammetry, continuous charge–discharge cycling, and AC impedance techniques, and compared with pristine Ni(OH) 2 /Ni foam electrode. The specific capacities as high as 374.5 mAh g − 1 and 277 mAh g − 1 at the current loads of 0.5 and 10 A g –1 were respectively achieved for the prepared composite/NF electrode. Also, the cycling abilities of 94.8% and 77.8% were obtained after 5000 continuous charge–discharge cycles at 2 and 6 A g –1 , respectively. The outstanding capacitive capability of the fabricated composite electrode was assigned to the synergetic contributions between the Ni(OH) 2 nanoplates and porous graphene/functionalized MWNTs and their rational architecture in the composite matrix.
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Nano Research
·
2023
·Vol. 16
·期 8
·10748-10755
·
IF 9.9
Li Junhua,Jiang Yi,Zhang Xu,Huo Yidan,Du Fanglin,Tuo Yongxiao,Guo Zhiyan,Chen Dawei,Chen Shenghua
The electrooxidation of the alcohol and aldehyde molecules instead of water coupled with H 2 production has been proven to be effective for producing high-value fine chemicals under alkaline conditions. It is also noteworthy that under acidic conditions, the stability of non-noble metal water oxidation catalysts remains a great challenge due to the lattice oxygen mechanism. Hence, we coupled the biomass-derived glucose oxidation for high-value D-glucaric acid (GRA) with ultra-durable hydrogen in acid solution over a Yb-MnO 2 catalyst. The Mn 3+ regulated by Yb atoms doped in MnO 2 can effectively optimize the adsorption and desorption processes of the alcohol and aldehyde group and improve the intrinsic activity but cannot for H 2 O. The catalyst exhibited extremely high activity and stability after 50 h for glucose oxidation, inhibiting the lattice oxygen process and MnO 4− formation, while the activity was quickly lost within 0.5 h for water oxidation. Density functional theory (DFT) calculations further demonstrated that glucose oxidation reaction proceeds preferentially due to the oxidation of aldehyde group with lower adsorption-free energy (−0.4 eV) than water (Δ G > 0 eV), avoiding the lattice oxygen mechanism. This work suggests that biomass-derived glucose oxidation not only provides a cost-effective approach for high-value chemicals, but also shows an extremely potential as an alternative to acidic oxygen evolution reaction (OER) for ultradurable H 2 production.
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CELLULOSE
·
2023
·Vol. 30
·期 12
·7745-7762
·
IF 5.7
Lang Daning,Zhang Chengbo,Qian Qianqian,Guo Chengxin,Wang Lingling,Yang Chao,Wu Ronglan,Wang Wei,Wang Jide,Fu Jihong
The occurrence of oil spills has severe damage upon both the environment and human health. Hence, the development of a green, recyclable, complex environment resistant, and efficient oil–water separation aerogel is required in order to effectively absorb marine or industrial oil. In this study, modified cellulose/N,N'-methylenebisacrylamide/tannin (PCMT) composite porous materials were prepared utilizing the sol–gel method and were modified with tertbutyl acrylate. PCMT possesses a three-dimensional interpenetrating porous structure, exhibiting remarkable oil–water separation performance and excellent compressive strength (PCMT can capable of bearing 7000 times its own weight; PCMT can endure 290.3 kPa pressure at 80% strain when the amount of tannin is 0.2 g). The unique pore structure of PCMT engenders differential oil adsorption capacities (PCMT0, PCMT0.05, PCMT0.1, and PCMT0.2 evince higher adsorption capacities for petroleum ether and dichloromethane, n-hexane and dichloromethane, toluene, and toluene and dichloromethane, respectively). Of critical import, PCMT demonstrates exceptional adaptability to complex environments, wherein the porous materials maintain good hydrophobicity and oil absorption capacity under conditions of vigorous stirring, a wide pH range (1–14), a wide temperature range (4–160 °C), ultraviolet irradiation (8 h), and tape peeling (10 times). Moreover, the porous materials may be employed for the recovery of oil through simple mechanical extrusion, thus demonstrating certain economic significance and the application potential in the treatment of oil spills.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 35
·84778-84790
·
IF 5.8
Li Wei,Hou Huizhen,Hu Jiye
Consumers are becoming more concerned about pesticide residues in food. Since citrus represent a significant portion of the diet, it is appropriate to monitor the pesticide residues in citrus. In this paper, we modified a QuEChERS method combined with HPLC-MS/MS to investigate residue levels of 15 pesticides and 3 metabolites in citrus (whole fruit and pulp) and orange juice from the markets in China. And the dietary exposure risks were evaluated by using the hazard quotient (HQ) and hazard index (HI) methods based on deterministic and probabilistic models. The recoveries of the modified method ranged from 70 to 112% at three spike levels of 0.005–0.5 mg/kg with relative standard deviations of 1.0–18.1%. Pesticide residues were detected in 85.84% of the whole citrus and 40.00% of pulp, with concentrations ranging from 0.005 to 0.47 mg/kg, which did not exceed their maximum residue limits (MRLs) in China. The HQ (0.01–11.41%) and HI (0.07–16.2%) were both less than 100%, demonstrating that chronic, acute, and cumulative dietary risks were acceptable. Notably, the risk for children (1–6 years old, 1.96–16.2%) was higher than that for the general population (0.76–6.25%). The results of our study can provide a valuable reference for regular monitoring to protect public health and ensure pesticide management.
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npj Materials Degradation
·
2023
·Vol. 7
·期 1
·1-10
·
IF 5.1
Yang Jingzhi,Ran Yami,Huang Luyao,Ren Chenhao,Hao Xiangping,Ma Lingwei,Zhang Dawei
2-hydroxyethyl methacrylate (HEMA), poly(ethylene glycol) (PEG), and zwitterionic polymers are currently considered the most extensively studied antifouling hydrogel coatings. However, systematic identification of these coatings to unleash their potential properties is tremendously under-represented. Here, we report a high-throughput optimizing strategy that combines highly miniaturized hydrogel synthesis and screening to fine design zwitterion-based hydrogel coatings. Compared with the traditional one-by-one synthesis and characterization methods, the proposed high-throughput strategy accelerated the discovery of candidate materials with a high-efficiency and cost-effective approach. To tailor multiple parameters of coatings, 1575 unique coating combinations with continuous gradients were prepared only required 600 μL reactant. The mechanical stability and drug-loading capacity of the coating spots were sequentially evaluated via immersion swelling, flow, tape-peeling, and dye-retaining tests. This strategy could efficiently reveal the composition/structure-function relationships of the hydrogel coatings and also other materials, which is promising for the rapid screening and design of desired implantable device surfaces.
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CATALYSIS LETTERS
·
2023
·
IF 2.8
Gao Youxin,Zhou Aojia,Min Jie,Yu Chengbing
A simple redox method was used to synthesize δ-MnO 2 and introduce the first main group metal elements between the layers of δ-MnO 2 . Through testing, we found that δ-MnO 2 doped with Rb + demonstrated the best catalytic performance for formaldehyde removal. Under the condition of 36 °C and the initial formaldehyde concentration of 200 ppm, a 200 mg of Rb-MnO 2 could achieve the percentage of removal of formaldehyde 97.48%. We found that doping elements with low electronegativity and large ion radius could weaken the Mn–O bond, which is conducive to the formation of reactive oxygen species and improve the performance of catalytic oxidation. Graphical Abstract
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JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 21
·8952-8968
·
IF 4.5
Qi Wenxia,Wang Shenglan,Yang Heng,Luo Tingting,Zhao Feng,Han Jingtian,Zhang Jing
Combination chemotherapy is a crucial therapeutic strategy to improve the therapeutic efficacy of breast cancer in clinic. When combined with photodynamic therapy (PDT), the therapeutic efficacy can be further enhanced not only by PDT-induced phototoxicity, but also by PDT-induced photochemical internalization which facilitates the intracellular delivery and endo/lysosomes escape of drugs, therefore exhibit considerable potential in clinical treatment of breast cancer. Herein, a novel cocktail therapeutic strategy based on albumin-based nanosystem was established by covalently modifying human serum albumin (HSA) with all-trans retinoic acid (RA) and chlorin e6 (Ce6) to form HSA-RA-Ce6 (HRC) conjugate, and using paclitaxel (PTX) to induce self-assembly of HRC to form HRC@PTX nanoparticles (HRC@PTX NPs). The HRC@PTX NPs could amplify the therapeutic efficacy of combination chemotherapy of RA and PTX with Ce6-mediated PDT. The HRC@PTX NPs were characterized with a mean particle size of 174.1 ± 2.1 nm and a slightly negative zeta potential and exhibited good stability and hemocompatibility. The HRC@PTX NPs could promote the cellular uptake of drugs by MCF-7 cells and MDA-MB-231 cells and produce ROS to amplify the synergistic anti-tumor efficacy. The in vitro inhibitory effects on tumor growth investigated on monolayer and three-dimensional tumor spheroids revealed that HRC@PTX NPs exhibited significantly higher anti-tumor activity when exposed to 660-nm laser. These results demonstrated that HRC@PTX NPs could be developed as a promising cocktail therapeutic strategy for synergistic breast cancer therapy. Graphical abstract
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