JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 6
·4265-4282
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IF 4.682
Hu Wenna,Wu Fan,Liu Wei
The objective of this study was to construct the S-scheme Bi 2 WO 6 / α- Bi 2 O 3 heterojunctions with high enhanced visible-light photocatalytic performance. The composites loaded various Bi 2 WO 6 mass ratios were prepared by a ball grinding method. The characterization and reaction mechanism of photocatalysts were explored in detail. Remarkably, the results demonstrated that the Bi 2 WO 6 / α- Bi 2 O 3 presented an outstandingly superior performance for photodegradation of nitrobenzene. Among them, the 10%Bi 2 WO 6 / α- Bi 2 O 3 possessed the best photocatalytic property, and it could reach up to 95.7% in 50 min with the top rate constant of 0.06178 min −1 , which was 4.3 and 3.6 times that of bare Bi 2 O 3 and Bi 2 WO 6 , respectively. Simultaneously, the Bi 2 WO 6 / α- Bi 2 O 3 was well stable after five cycling experiments. The efficiently improved photocatalytic performance was primarily attributed to the formation of S-scheme structure between Bi 2 WO 6 and α- Bi 2 O 3 , which enhanced the conspicuous separating efficiency of photogenerated carriers. The present study not only offers a method to solve the unsatisfactory activity of Bi 2 O 3 , but also provides some insights into the design of other novel S-scheme composites with great potential application in clean energy and environmental remediation. Graphical abstract The efficiently improved photocatalytic performance was primarily attributed to the formation of S-scheme structure between Bi 2 WO 6 and α- Bi 2 O 3 , which enhanced the conspicuous separating efficiency of photogenerated carriers.
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Journal of Energy Storage
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2022
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IF 8.907
Ramzi Nasser,Jian Tiantian,Ji-Ming Song
For the structure and morphology of supercapacitor (SC) electrode materials, activation agent and processing technology are two important factors. Herein, we have developed an activated carbon material with high electrochemical performance obtained from olive husk, which is pre-treated by hydrothermal route followed activation treatment by dual activators. The effect of activation agents and heteroatom doping (N, S) on the structure and electrochemical performance of the obtained materials are deeply investigated. Optimized activation temperature at 700 °C was applied to create hierarchical porous carbon structure. The Olive husk-derived Activated Carbon with KOH/NaOH (OACKNa) has a specific surface area of 2900 m 2 ·g −1 , exhibits outstanding specific capacitance of 549 F·g −1 at 1 A·g −1 with high capacitance retention of 79.5% when the current density reaches up 30 A·g −1 . Furthermore, OACKNa based symmetric SC device displays marvelous cyclic stability with rate capability of 93.2% after 10,000 cycles at 10 A·g −1 . Interestingly, OACKNa device delivers high specific energy of 38.8 Wh·kg −1 even at ultrahigh specific power of 650 W·kg −1 at 1 A·g −1 . Therefore, the obtained OACKNa with low-cost synthesis combined with the attractive electrochemical performances is a promising electrode material for supercapacitors .
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2022
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IF 4.831
Yao Fan,Wenjun Qiao,Wanjun Long,Hengye Chen,Haiyan Fu,Chunsong Zhou,Yuanbin She
In recent years, antibiotic residues in food have been of great concern to regulators and consumers. In this study, a novel fluorescent sensor based on S, N-doped carbon quantum dots (S, N-CQDs) was established for rapid detection of tetracycline antibiotics (TCs). Through the internal filter effect (IFE), QDs fluorescence can be effectively quenched by TCs, endowing it an “off” condition. Under the optimal conditions, the TC concentration in the range of 1.88–60 μmol/L had a good linear relationship with the change of QDs fluorescence intensity, and the limit of detection (LOD) was calculated as 0.56 μmol/L (S/N = 3). Furthermore, the proposed “Turn-off” sensor could be employed to quickly and accurately quantify TCs residues even in milk, honey and tap water. The recovery rate was as high as between 93.61% and 102.31%. The established sensor has great application value in the fields of food safety and drug analysis, and provides broad prospects for the future food industry.
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高影响因子
ACS Applied Bio Materials
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2022
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IF 0
Dedai Lu,Lili Yu,Zhengpeng Chen,Mingshu Chen,Ziqiang Lei,Hongyun Guo,Xingdong Wang,Yongdong Zhang,Tingting Xu,Haijun Wang,Xing Zhou,Shenghong Ju,Gaojun Teng
Interventional embolization and minimally invasive thermal ablation are common clinical methods for treatment of unresectable solid tumors, but they both have many insurmountable disadvantages. Inspired by pH-responsive drug delivery systems, we report the tumor microenvironment-gelled nanocomposites with poly[(l-glutamic acid-ran-l-tyrosine)-b-l-threonine-b-l-cysteine]s (PGTTCs) coating nanoparticles (NPs, Au or Fe3O4) for noninterventional targeted embolization combined with noninvasive thermal ablation therapy of solid tumors by intravenous injection without catheter use. The results of the animal trial in vivo with tumor-bearing mice and rabbits showed superior targeted embolization and therapy and fluorescence/single-photon emission computed tomography/magnetic resonance multimodal imaging effects. Tumors treated with NPs@PGTTCs were shrunken and necrotized within 30 days, the long-term survival rate was more than 80%, and the same effects can be achieved within 15 days when combined with thermal ablation. The method is so simple and efficient for many hard-to-treat tumors within an acidic microenvironment, which is not only a great improvement and innovation in tumor theranostics but also an important development in nanomedicine.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Jianfeng Wang,Jun Li
The traditional PP separator is failed to inhibit the polysulfide shuttle effect for the lithium-sulfur ctteries. Besides, it has poor safety porblem when used at high temperatures. Therefore, it is urgent to develop new modified separator to repalce the traditional separator. To deal with these problems, layered hierarchical C@MoS 2 spheres are prepared and modified the traditional separator. Due to the presence of the C@MoS 2 modified separator, the Li-S batteries with C@MoS 2 separator display high specific capacity and superior cycling stability even at high rate of 2C. The high electrochemical performance is attributed to efficient inhibition of shuttle effect by the adsorption and catalytic conversion of polysulfide on the C@MoS 2 separator. This work has a certain reference value for the future large-scale application of lithium-sulfur battery.
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APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Mingshuai Sun,Fumin Wang,Guojun Lv,Xubin Zhang
S-containing silane coupling agents (SCA) with various structures were chosen as regulators to synthesize PdC nanoparticles in different sizes for semi-hydrogenation of acetylene. Characterization and catalytic performance demonstrate that the catalytic property of PdC is deeply influenced by particle size. PdC particles prepared by employing SCA containing sulfhydryl has a smaller size and narrow diameter distribution. They exhibited better inhibition on ethane formation than those by containing thioether bond. Catalysts with larger PdC particles have lower selectivity to C4 and green oil. Reaction paths on typical (1 1 1) surface of PdC nanoparticles with different dimensions were investigated by DFT calculations. It reveals that within a certain particle size range (∼2.6 nm), surfaces of smaller PdC particles have weaker adsorption strength of ethylene. As particle size exceeds 2.6 nm, the adsorption strength no longer increases. C4 and green oil are more likely to be generated when PdC particles are around 2 nm, and the size smaller or larger than 2 nm will weaken the tendency of C4 and green oil formation.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Feng Wei,Hanfang Zhang,Jianfeng Wang,Jinglong Zhuang,Yaohui Lv
The introduction of heteroatoms into carbon materials is beneficial for enhancing zinc ion storage capability, and thereby obtaining excellent electrochemical performance. Herein, the N, S co-doped porous carbons (NSPCs) with well-developed pores and massive surface area are synthesized from natural biomass by the synergistic activation strategy of KHCO 3 and Na 2 S 2 O 3 . Accordingly, NSPC K achieves high capacitance (262.7 F g −1 ) and long cycle life (remains 99.3% after 10,000 cycles) in 1 M Zn(CF 3 SO 3 ) 2 aqueous electrolyte for supercapacitor . Impressively, the NSPC cathode presents high discharge capacity of 136.3 mAh g −1 in the voltage window of 0–1.8 V, good rate performance (86.5 mA h g −1 at 20 A g −1 ) and high energy density (122.6 W h kg −1 ) for zinc ion hybrid capacitor (ZHC). Besides, the ZHC delivers long-term life with 0.5% damage after 15,000 cycles. This study may facilitate the design of high-energy and safe electrochemical energy storage devices based on the heteroatom doping carbons and aqueous electrolyte.
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ACS Applied Materials & Interfaces
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2022
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IF 10.383
Yanping Guo,Jichun Zhu,Dongxing Kou,Wenhui Zhou,Zhengji Zhou,Shengjie Yuan,Yafang Qi,Yuena Meng,Litao Han,Zhi Zheng,Sixin Wu
The kesterite Cu2ZnSn(S,Se)4 (CZTSSe) solar cells have shown a continuous rise in power conversion efficiencies in the past years. However, the encountered interfacial problems with respect to charge recombination and extraction losses at the CdS/CZTSSe heterojunction still hinder their further development. In this work, an additional plasmonic local electric field is imposed into the CdS/CZTSSe interface through the electrostatic assembly of a two-dimensional (2D) ordered Au@SiO2 NP array onto an aminosilane-modified surface absorber. The interfacial electric properties are tuned by controlling the coverage particle distance, and the finite-difference time domain (FDTD) simulation demonstrates that the strong near-field enhancement mainly occurs near the p-n junction interface. It is shown that the imposed local electric field leads to interfacial electrostatic potential (Velec) augmentation and improves the charge extraction and recombination processes. These electric benefits enable remarkable improvements in open-circuit voltage (Voc) and short-circuit current (Jsc), leading to the cell efficiency being increased from 10.19 to 11.50%. This work highlights the dramatic role of the plasmonic local electric field and the use of the 2D Au@SiO2 NP array to modify a surface absorber instead of the extensively used ion passivation, providing a new strategy for p-n junction engineering in kesterite photovoltaics.
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高影响因子
IONICS
·
2022
·Vol. 28
·期 10
·4685-4695
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IF 2.961
Wang Jie,Xuan Haicheng,Meng Lingxin,Yang Jiangtao,Yang Jiale,Liang Xiaohong,Li Yuping,Han Peide
The development of low-cost and high-efficiency hydrogen evolution reaction (HER) electrocatalysts has become extremely essential to address global energy issues. Herein, we have fabricated arrays of nitrogen and sulfur co-doped CoMoO 4 ultrathin nanosheets grown on nickel foam (N, S-CoMoO 4 /NF 400 ). The experimental results demonstrate that modulating the electronic structure of CoMoO 4 by co-doping N and S atoms is one of the most powerful methods to boost the performance of HER. N, S-CoMoO 4 /NF 400 displays superior HER activity under alkaline environment, with overpotentials of 58 and 119 mV at 10 and 100 mA cm −2 . The excellent performance of the N, S-CoMoO 4 /NF 400 electrode proves that the N, S co-doping engineering can significantly improve the catalytic activity of transition metal-based oxide HER.
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APPLIED SURFACE SCIENCE
·
2021
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IF 6.707
Zhenlu Liu,Jing Xu,Caijin Xiang,Ye Liu,Lijun Ma,Linying Hu
Semiconductor materials can absorb visible light to become excellent hydrogen-producing materials. When different semiconductors are supported on each other, it can greatly promote the increase of hydrogen production rate. The article uses ZnS and CoMoO 4 to construct a new type of S-scheme heterojunction, and uses related characterization to illustrate the hydrogen production advantages and high performance reasons of the system. The experimental data of photocatalytic hydrogen production concretely proved the high catalytic performance of the composite material. The results shown that when the amount of ZnS loaded on CoMoO 4 was 5%, the adsorption of the composite catalyst and an appropriate amount of sensitizer made the hydrogen production rate reached 1233 μmol/g/h. This study used different characterizations to show the ball-and-stick structure of the composite catalyst and supplements the S-scheme heterojunction mechanism. Based on various studies, ZnS and CoMoO 4 had broad application prospects. The special electron transfer path of the S-scheme heterojunction provided theoretical model support for high-performance hydrogen production.
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CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Qilin Chang,Cuiping Li,Jing Sui,Geoffrey I.N. Waterhouse,Zhi-Ming Zhang,Liang-min Yu
Eggshell membrane-derived Co-Co x S y -Ni/N,S-codoped carbon composites (EM-Co-Co x S y -Ni/N,S-C) were synthesized by heating a Co 2+ -Ni 2+ -2-methylimidazole/eggshell membrane precursor in a N 2 atmosphere. The dual atom (nitrogen (N) and sulfur (S)) doping of C was realized easily by using eggshell membrane as the joint source of carbon, N and S. The EM-Co-Co x S y -Ni/N,S-C composites showed remarkable electromagnetic wave absorption (EMWA) performance. The minimum reflection loss (RL min ) reached −48.5 dB (10.1 GHz, 3.5 mm) and the Effective absorption bandwidth (EAB) achieved 7.4 GHz (10.3–17.7 GHz, 3 mm). By adjusting the concentration of 2-methylimidazole, impressive RL min (-41.5 dB, 13.9 GHz) and EAB (6.5 GHz, 11.5–18 GHz) could be achieved at an absorber thickness of 2.5 mm. Eggshell membrane exhibits considerable potential in designing heteroatom doped carbon based EMW absorbents with high-performance and low cost.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
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IF 6.953
Pengfei Li,Dawei Jin,Jie Dou,Lijuan Wang,Yanfang Wang,Xingxing Jin,Xiao Han,Inn-Kyu Kang,Jiang Yuan,Jian Shen,Meng Yin
Rapid endothelialization and regulation of smooth muscle cell proliferation are crucial for small-diameter vascular grafts to address poor compliance, thromboembolism, and intimal hyperplasia, and achieve revascularization. As a gaseous signaling molecule, nitric oxide (NO) regulates cardiovascular homeostasis , inhibits blood clotting and intimal hyperplasia, and promotes the growth of endothelial cells. Due to the instability and burst release of small molecular NO donors, a novel biomacromolecular donor has generated increasing interest. In the study, a low toxic NO donor of S-nitrosated keratin (KSNO) was first synthesized and then coelectrospun with poly(ε-caprolactone) to afford NO-releasing small-diameter vascular graft. PCL/KSNO graft was capable to generate NO under the catalysis of ascorbic acid (Asc), so the graft selectively elevated adhesion and growth of human umbilical vein endothelial cells (HUVECs), while inhibited the proliferation of human aortic smooth muscle cells (HASMCs) in the presence of Asc. In addition, the graft displayed significant antibacterial properties and good blood compatibility. Animal experiments showed that the biocomposite graft could inhibit thrombus formation and preserve normal blood flow via single rabbit carotid artery replacement for 1 month. More importantly, a complete endothelium was observed on the lumen surface. Taken together, PCL/KSNO small-diameter vascular graft has potential applications in vascular tissue engineering with rapid endothelialization and vascular remolding.
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