Frontiers in Energy
·
2023
·Vol. 18
·期 1
·110-121
·
IF 2.9
Ge Yang,Shen Quanhao,Zhang Qi,Li Naixu,Lu Danchen,Zhang Zhaoming,Fu Zhiwei,Zhou Jiancheng
Metal-free graphitic carbon nitride (g-C 3 N 4 ) has captured significant attention as a low-cost and efficient hydrogen production photocatalyst through. Effectively regulating the microstructure and accelerating the separation of photogenerated carriers remain crucial strategies for promoting the photocatalytic performance of this material. Herein, a novel sulfur–carbon co-doped g-C 3 N 4 (SCCN) hierarchical microtubules filled with abundant nanosheets inside by thermal polymerization is reported. Numerous nanosheets create abundant pores and cavities inside the SCCN microtubes, thereby increasing the specific surface area of g-C 3 N 4 and providing sufficient reactant attachment sites. Besides, the hierarchical structure of SCCN microtubules strengthens the reflection and scattering of light, and the utilization of visible light is favorably affected. More importantly, co-doping S and C has greatly improved the photocatalytic performance of graphitic carbon nitride, optimized the band gap structure and enhanced the photogenerated carrier splitting. Consequently, the SCCN exhibits a remarkable photocatalytic H 2 evolution rate of 4868 µmol/(g·h). This work demonstrates the potential of multi-nonmetal doped g-C 3 N 4 as the ideal photocatalyst for H 2 evolution.
研究领域:
材料科学
·
纳米技术
·
催化
·
能量转换
·
环境科学
✓ 已验证
DOI
高影响因子
BMC Complementary Medicine and Therapies
·
2024
·Vol. 24
·期 1
·1-15
·
IF 3.3
He Yu,Liu Fei,He Mingjuan,Long Fayu,Hu Ding,Chen Jingwen,Fang Miao,Wang Zhenlong
The purpose of this study was to investigate the mechanism by which resveratrol (Res) inhibits apoptosis and promotes proliferation and differentiation of pre-osteoblastic MC3T3-E1 cells, laying the groundwork for the treatment of osteoporosis (OP). The TCMSP database was used to find the gene targets for Res. The GeneCards database acquire the gene targets for OP. After discovering the potential target genes, GO, KEGG, and Reactome enrichment analysis were conducted. Verifying the major proteins involved in apoptosis can bind to Res using molecular docking. CCK8 measured the proliferative activity of mouse pre-osteoblasts in every group following Res intervention. Alkaline phosphatase staining (ALP) and alizarin red staining to measure the ability of osteogenic differentiation. RT-qPCR to determine the expression levels of Runx2 and OPG genes for osteogenic differentiation ability of cells. Western blot to measure the degree of apoptosis-related protein activity in each group following Res intervention. The biological processes investigated for GO of Res therapeutic OP involved in cytokine-mediated signaling pathway, negative regulation of apoptotic process, Aging, extrinsic apoptotic signaling pathway in absence of ligand, according to potential therapeutic target enrichment study. Apoptosis, FoxO signaling pathway, and TNF signaling pathway are the primary KEGG signaling pathways. Recactome pathways are primarily engaged in Programmed Cell Death, Apoptosis, Intrinsic Apoptotic Pathway, and Caspase activation via extrinsic apoptotic signaling pathways. This research established a new approach for Res treatment of OP by demonstrating how Res controls the apoptosis-related proteins TNF, IL6, and CASP3 to suppress osteoblast death and increase osteoclastogenesis.
研究领域:
药理学
·
细胞生物学
·
分子生物学
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生物信息学
·
骨生物学
·
网络医学
✓ 已验证
DOI
高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 3
·997-1003
·
IF 2.2
Pan Si-Hui,Qian Hong-Fei
To improve the fastness properties of disperse dyes on polyester/spandex blend fabric, ultrasound was applied during the post-clearing process to assist in the removal of unfixed dyes on polyurethane fibers. The blend fabrics were pre-dyed with C.I. Disperse Brown 1, which was found to be able to severely stain spandex component in previous studies. The dyed blends were treated via an ultrasound-assisted clearing process, with varied frequency, temperature, and time, to optimize the clearing conditions. Three methods were compared in terms of the removal degree of unfixed dyes on polyurethane materials, which include the normal reduction clearing by mechanical oscillation and ultrasonic reduction clearing with or without the addition of auxiliaries. Scanning electron microscopy was used to observe the degree of dye aggregation on the surface of treated or untreated polyurethane fibers. The staining degree on polyurethane fibers decreased significantly with increasing ultrasonic frequency, temperature, and time. The addition of polyoxyethylene-type nonionic surfactants to the ultrasound-assisted reduction clearing could enhance the removal of dyes on polyurethane fibers. Polyester/spandex fabric samples were dyed with high-energy disperse dyes (in the three primary colors), and the optimized ultrasound-assisted reduction clearing process was applied to evaluate the washing fastness properties.
研究领域:
纺织化学
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超声波处理
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色彩科学
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材料科学
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表面化学
✓ 已验证
DOI
高影响因子
Silicon
·
2023
·Vol. 15
·期 16
·6997-7004
·
IF 3.4
Chen Gaopan,Luo Haimei,Zhou Yan,Pan Liyan,Luo Guihai,Pan Guoshun
SiO 2 based slurry was an ideal solution for addressing element pollution in fused silica polishing. However, it was still a huge challenge to enhance polishing efficiency. Herein, lignin was added into colloidal silica to manipulate SiO 2 particles, thereby improving the removal efficiency of fused silica. Specifically, the variations of average particle size ( Z -Average) and polymer dispersity index ( PDI ), -OH groups on particles surface, wettability and viscosity of colloidal silica with addition lignin in the range of 0–5% were introduced. Also, adhesion action and tribological characteristics with and without manipulation in polishing process were studied. Removal mechanism of fused silica using SiO 2 based slurry and the key factors to improve polishing performance were discussed at different content of lignin. Colloidal silica was stable at lignin content of 2%, at which material removal rate ( MRR ) was increased by 216% and surface roughness ( Ra ) achieved 0.118 nm. This study embarked from abrasives variations directly (particles characteristics) and indirectly (colloidal silica) intending to reveal the change of removal mechanism on fused silica polishing. It provided new insights for fused silica polishing definitely.
研究领域:
材料科学
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机械工程
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化学工程
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纳米技术
·
表面工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 8
·1-11
·
IF 2.8
Yang Zhengyu,Jin Wan
The great attention of rechargeable Zn-air battery has motivated extensive research on the development of inexpensive, highly efficient, and robust noble-metal-free bifunctional catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In this work, Mn-N-C-950 single-atom catalyst with biomass aerogel as precursor was successfully synthesized. The resulting Mn-N-C-950 exhibited excellent bifunctional catalytic performance for ORR ( E 1/2 = 0.843 V) and OER ( E j=10 = 1.56 V) in alkaline electrolytes, which can compete with previously reported bifunctional electrocatalysts. In addition, compared to the Pt/C + RuO 2 mixed catalyst, this bifunctional catalyst can endow the self-made zinc-air battery with better power density (114.1 mW/cm 2 ) and cycle stability (105.5 h), demonstrating its potential feasibility in practical applications of rechargeable metal air batteries.
研究领域:
储能
·
电化学
·
纳米材料
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催化
·
可再生能源
✓ 已验证
DOI
高影响因子
Nano Research
·
2024
·Vol. 17
·期 6
·5031-5039
·
IF 9.5
Li Wenxiang,Gao Shuo,Yang Chuanruo,Yang Juntao,Nisar Amjad,Xiang Guolei,Jin Junsu
In 2 O 3 is an effective electrocatalyst to convert CO 2 to formic acid (HCOOH), but its inherent poor electrical conductivity limits the efficient charge transfer during the reaction. Additionally, the tendency of In 2 O 3 particles to agglomerate during synthesis further limits the exposure of active sites. Here we address these issues by leveraging the template effect of graphene oxide and employing InBDC as a self-sacrificing template for the pyrolysis synthesis of In 2 O 3 @C. The resulting In 2 O 3 @C/rGO-600 material features In 2 O 3 @C nanocubes uniformly anchored on a support of reduced graphene oxide (rGO), significantly enhancing the active sites exposure. The conductive rGO network facilitates charge transfer during electrocatalysis, and the presence of oxygen vacancies generated during pyrolysis, combined with the strong electron-donating ability of rGO, enhances the adsorption and activation of CO 2 . In performance evaluation, In 2 O 3 @C/rGO-600 exhibits a remarkable HCOOH Faradaic efficiency exceeding 94.0% over a broad potential window of −0.7 to −1.0 V (vs. reversible hydrogen electrode (RHE)), with the highest value of 97.9% at −0.9 V (vs. RHE) in a H-cell. Moreover, the material demonstrates an excellent cathodic energy efficiency of 71.6% at −0.7 V (vs. RHE). The study underscores the efficacy of uniformly anchoring metal oxide nanoparticles onto rGO for enhancing the electrocatalytic CO 2 reduction performance of materials.
研究领域:
电化学
·
纳米材料
·
催化
·
能量转换
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2024
·Vol. 35
·期 4
·2059-2069
·
IF 2.6
Wu Xinru,Ruan Chen,Zhu Xinyue,Zou Lina,Wang Rong,Li Gaiping
Design and fabrication of integrated multifunctional probes with intrinsic catalytic and detection abilities is of great importance to simplify the operation in biosensing application with high sensitivity. Herein, dual-emitting lanthanide coordination polymers (Ln-CPs) were facilely prepared by self-assembly of guanine diphosphate (GDP), terephthalic acid (TA), Tb 3+ and Cu 2+ designated as Tb/Cu-GDP/TA CPs. The doped Cu 2+ endowed CPs with obviously enhanced peroxidase mimicking activity compared with free Cu 2+ . In the presence of H 2 O 2 , the probe catalyzed the oxidation of TA generating a new blue fluorescent product, while the fluorescence of Tb 3+ decreased simultaneously. Therefore, a new sensitive ratiometric fluorescent sensor for H 2 O 2 has been developed with a good linear range from 0.01 to 300 μM and limit of 1.62 nM. Moreover, the proposed platform could be extended to GSH ratiometric assay in the presence of H 2 O 2 , and interestingly, the detection performance could be easily adjusted by adding different concentration of H 2 O 2 . This work will facilitate the development of luminescent nanoenzymes based on Ln-CPs to construct the simple ratiomatric sensing platform.
研究领域:
材料科学
·
纳米技术
·
生物分析
·
配位化学
·
荧光传感
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 2
·1-13
·
IF 2.8
Wu Canfeng,Chen Yanrong,Yao Yingbang
Graphitic carbon nitride (g-C 3 N 4 ) has been widely studied and applied in the field of catalysis, but its photocatalytic performance still needs to be improved. In this work, g-C 3 N 4 was protonated with hydrochloric acid and nitric acid, and the products were denoted as HCN and NCN, respectively. The photocatalytic performances of g-C 3 N 4 , HCN, and NCN were compared by the degradation of Rhodamine B solution (RhB) under visible light. The structure, morphology, optical, and electrochemical properties of the samples were systematically characterized. It was found that both HCN and NCN were composed of uniform nanosheets, and HCN had a better separation. The UV–Vis and PL spectra showed that the band gap of the material was widened, and the photogenerated electron-hole pairs can be effectively separated. From the photocatalytic degradation test, HCN and NCN showed stronger photocatalytic activity than g-C 3 N 4 , and the degradation efficiency was HCN > NCN > g-C 3 N 4 , the degradation of RhB were 98%, 95%, and 78% respectively at 75 min. The experiment of the free radical scrubber showed that superoxide free radical was the main active substance of photocatalytic degradation. Our results have potential application value for the design of two-dimensional photocatalytic materials.
研究领域:
催化
·
材料科学
·
光催化
·
环境科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2023
·Vol. 34
·期 4
·1751-1764
·
IF 4
Zhou Zhuyou,Zou Congyang,Wang Yong,Liu Menghe,Ji Yufeng
A one-step solvothermal synthesis technique was employed to fabricate C 60 /MIL-101(Fe) composites. The C 60 /MIL-101(Fe) composites showed a better performance in the degradation of methylene blue (MB) and tetracycline hydrochloride (TCH) when compared to MIL-101(Fe) in the photo-Fenton system, which can be credited to the charge transfer and separation facilitated by the addition of C 60 . Results showed that C 60 /MIL-101(Fe) had the capacity to nearly completely eliminate TCH and MB over a broad pH range. The catalysts demonstrated remarkable catalytic degradation on various organic pollutants and water samples. Through active substance quenching experiments and EPR, it was determined that hydroxyl radical (·OH) is the main factor in the photocatalytic reaction process.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 3
·785-796
·
IF 2.2
Fan Liya,Zhao Xiaoyan,Zhu Xiao,Li Yangsong,Cui Zhaoliang
The spraying of pesticides not only causes the waste of chemicals but also air pollution. To make the use of pesticides become more environmentally friendly and effective, biodegradable material polylactic acid (PLA) was chosen to package pesticides in this work. Three different film preparation methods (drying, coagulation bath shaping, and steam treatment) were used to study the morphology of PLA coated films. From FESEM images, it could be observed that the steam treatment was more easy in forming pore structures of the films. The sustained release performances of PLA film with the pore size around 800 nm for tetracycline hydrochloride (TC) and hymexazol (HYM) were investigated. The results showed that both chemical temperature and solubility could affect the sustained release effect of films. Due to the slower dissolution rate of TC compared to HYM, it was prone to aggregation in PLA films, which affected the sustained release of TC. The release rates of TC and HYM could reach 98.2% (40 °C, 2.5 h) and 99.51% (60 °C, 3.0 h), respectively. The release processes of TC and HYM conformed to the first-order kinetic model. It promotes the application of environmental friendly materials in pest control of plants.
研究领域:
环境科学
·
高分子科学
·
农药技术
·
材料工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 7
·1-11
·
IF 2.8
Li Xinwei,Zhao Wenxia,Cheng Yi,Liu Xin,Hui Kaihong,Zhao Wei,Song Yifan,Zhu Qian,Chen Huaijun,Cui Yubo
In the processing technology of printed circuit boards, the common electroless copper plating technology of ethylenediaminetetraacetic acid disodium (EDTA-2Na) has the problems of large surface stress, uneven crystal particles, and large surface roughness of the copper plating layer. To remedy the above shortcomings and meet the current requirements for copper interconnects in printed circuit boards (PCBs), the present study has investigated a chemical copper plating system that combines a high deposition rate with low stress. An electroless copper plating was then performed on a polyacrylonitrile-butadiene-styrene (ABS) plastic resin plate with 2,6-diaminopyridine (2,6-DAP), 2,2-bipyridine, sodium hydroxyethyl sulfonate (SHES) and NiSO 4 ·6H 2 O as supplementary additives. By using scanning electron microscopy (SEM), electrochemical, atomic force microscopy (AFM), and X-ray diffraction (XRD) analyses, it has been shown that the average surface roughness Ra became reduced from 202 nm to 76.1 nm when using additives in the chemical copper plating process. Also, the internal stresses of the deposited copper layer on the (220) and (311) planes of a crystalline copper layer decreased from − 70.48 and − 53.03 to − 27.31 and − 27.16 MPa, respectively. The composite additive improved the quality of the copper layer of the EDTA-2Na-based chemical copper plating system, increasing the practical range of industrial applications and facilitating the subsequent application of higher-precision processing.
研究领域:
化学镀
·
材料科学
·
表面工程
·
微电子制造
·
化学添加剂
✓ 已验证
DOI
高影响因子
Science China-Chemistry
·
2023
·Vol. 66
·期 4
·1073-1077
·
IF 9.6
Pei Huan,Wang Xuefei,Zhang Jie,Zhang Fangfang,Yang Zhihua,Pan Shilie
Fluorooxoborate has emerged as a promising system for exploring optical materials due to their rich structural chemistry and physicochemical properties, yet so far not fully studied. Herein, we report a new fluorooxoborate, Ba 2 B 9 O 13 F 4 ·BF 4 , which contains the greatest variety of structural basic units, [BO 3 ], [BO 2 F 2 ], [BO 3 F], and [BF 4 ], and exhibits unprecedented 1D infinite [B 18 O 26 F 8 ] tubes. The unique structure avoids the dangling bonds caused by terminal oxygens, which is beneficial to the large bandgap and deep-ultraviolet cutoff edge. This article expands the crystal structure of fluorooxoborates and contributes to the exploration of deep-ultraviolet optical materials in fluorooxoborate systems.
研究领域:
无机化学
·
材料科学
·
光学材料
·
晶体学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）