INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2023
·
IF 4.2
Runqian Yang,Rui Xiong,Kunpeng Wang,Yining Jiang,Qian Chen,Liping Ruan
The problem of microwave pollution becomes more serious with the widespread popularity of electronic equipment; the development of microwave absorption materials has assumed critical importance. However, most reported carbon-based microwave absorption materials have no obvious absorption performance in 2–4 GHz (S band), which seriously limits their application. In this work, Ni(OH)2-coated peach pit carbon [Ni(OH)2/C1] is prepared by simple precipitation to achieve a minimum reflection loss (RL) value of −46.2 dB (5.6 mm, at 2.9 GHz) and absorption band cover 2.54–4 GHz in the thickness range of 3.7–6 mm in the S-band. In addition, Ni(OH)2/C1 achieved an RLmin value of −58.05 dB (2.7 mm, at 7.68 GHz) and maximum effective absorption bandwidth (EAB) of 3.95 GHz in the range 2–18 GHz. Our work provides new insights into the microwave absorption in low frequencies and expands the application range and scenarios of carbon-based materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
·
IF 8.2
Xiao-Ling Lei,Kai Cheng,Yong-Guo Hu,Yong Li,Xiao-Lin Hou,Fang Zhang,Lin-Fang Tan,Zi-Tao Zhong,Jian-Hao Wang,Jin-Xuan Fan,Yuan-Di Zhao
Abscess wound caused by bacterial infection is usually difficult to heal, thus greatly affect people's quality of life. In this study, a biodegradable drug-loaded microneedle patch (MN) is designed for targeted eradication of S. aureus infection and repair of abscess wound. Firstly, the bacterial responsive composite nanoparticle (Ce6@GNP-Van) with a size of about 182.6 nm is constructed by loading the photosensitizer Ce6 into gelatin nanoparticle (GNP) and coupling vancomycin (Van), which can specifically target S. aureus and effectively shield the phototoxicity of photosensitizer during delivery. When Ce6@GNP-Van is targeted and enriched in the infected regions, the gelatinase secreted by the bacteria can degrade GNP in situ and release Ce6 , which can kill the bacteria by generating ROS under laser irradiation. In vivo experiments show that the microneedle is basically degraded in 10 min after inserting into skin, and the abscess wound is completely healed within 13 d after applying Ce6@GNP-Van-loaded MN patch to the abscess wound of the bacterial infected mice with laser irradiation, which can simultaneously achieve the eradication of biofilm and subsequent wound healing cascade activation, showing excellent synergistic antibacterial effect. In conclusion, this work establishes a synergistic treatment strategy to facilitate the repair of chronic abscess wound.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Yunlong Yu,Zhiyan Ma,Xiaoya Miao,Yanyu Cui,Yaping Song,Sen Liu,Teng Fei,Tong Zhang
Low humidity detection has been a great challenge in the field of humidity sensing. In recent years, polyelectrolytes have been proven to be promising materials for highly sensitive humidity sensors . In this work, cross-linked poly(ionic liquid)s (PILs) were prepared for low humidity detection. The strong hydrophilicity of PILs contributes to humidity sensing while the cross-linked structure guarantees the stability of the sensing film. The optimized sensor shows high response (48.0) in 5–35% RH, with short response/recovery time (1 s/10 s) and a small humidity hysteresis (0.2% RH). The possible sensing mechanism of the sensors was discussed.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Jiabing Luo,Xingzhao Wang,Shutao Wang,Wenle Li,Yanpeng Li,Tingyong Wang,Fengqi Xu,Yang Liu,Yan Zhou,Jun Zhang
Inducing the surface reconstruction of spinels is critical for improving the electrocatalytic oxygen evolution reaction (OER) activity. Herein, S-doped NiCo 2 O 4 hollow cubic nanocage was synthesized by anion etching Metal-Organic Frameworks (MOFs) template and air annealing strategies. The hollow structure possesses a large specific surface area and pore size, facilitating active site exposure and mass transport. S 2− doping regulates the electronic structure, reducing the oxidation potential of Ni sites during the OER process, thus promoting the surface reconstruction into γ-NiOOH active species. Meanwhile, S 2− doping enhances conductivity, accelerating interfacial charge transfer. As a result, S-NiCo 2 O 4 -6 exhibits superior OER activity (262 mV overpotential @ 10 mA cm −2 ) and stability in 1.0 M KOH solution. Furthermore, 20 % Pt/C‖S-NiCo 2 O 4 -6 only needs 1.832 V to achieve 50 mA (the electrochemical active area is 4 cm 2 ) in a homemade anion exchange membrane (AEM) electrolyzer. This work proposes a novel approach for preparing efficient anion-doped spinel-based OER electrocatalysts.
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Laser & Photonics Reviews
·
2023
·Vol. 18
·期 1
·2300809
·
IF 11
Xiankun Zheng,Lijin Wang,Jialin Bai,Han Zhang,Hanzhuang Zhang,Aiwei Tang,Wenyu Ji
Currently, the performance of quantum-dot light-emitting diodes (QLEDs) based on environmental-friendly Cu─In─Zn─S quantum dots (QDs) still lags far behind that of Cd-QDs-based devices. Here it is demonstrated that the unique trap-related recombination in Cu─In─Zn─S QDs is mainly responsible for the low device efficiency. The luminous efficiency of Cu─In─Zn─S-based QLEDs is rather sensitive to the temperature and hole-transporting layers (HTLs) due to the susceptible thermal-related trappingdetrapping processes of holes in radiative Cu-related traps. The holes in Cu-related traps can be quenched by escaping to the valence band of the QDs or/and transferring to the adjacent HTLs. An HTL with low highest occupied molecular orbitals is desired to enhance the hole injection and hinder the aforementioned hole transfer. As a result, a high device efficiency of 6.0 cd A −1 is achieved at room temperature, which is attributed to suppressed HTL-induced emission quenching and efficient valence-band-dominated hole injection from HTL to the QDs. The device efficiency is further increased to 13.2 cd A −1 at 150K by suppressing thermal-induced quenching.
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EUROPEAN JOURNAL OF MEDICAL RESEARCH
·
2023
·Vol. 28
·期 1
·1-10
·
IF 4.2
Gu Shanshan,Lin Chen,Li Yanguo,Wei Zhengyu,cao Bing,Shen Zhisen,Deng Hongxia
Head and neck squamous carcinoma (HNSCC) is the seventh most common cancer worldwide. Targeted therapeutic drugs for HNSCC are still being explored. Among them, (S)-10-hydroxycamptothecin (10-HCPT), a specific inhibitor of TOP1, functions by DNA double-strand breaks that can inhibit DNA replication and trigger apoptotic cell death subsequently. Previous studies have reported that MLN4924 exerts potent anti-tumor effects by inhibiting cullin–RING ligases and causing substrate accumulation in a variety of cancers. Here, we show that MLN4924 effectively causes dose-dependent accumulation of topoisomerase I (TOP1) and blocks TOP1 ubiquitination. Importantly, neddylation inhibition with MLN4924 acts synergistically with 10-HCPT to suppress cell growth, migration and apoptosis in HNSCC cells. Mechanistically, transcriptome sequencing shows that the cytotoxic effects of the combination of MLN4924 and 10-HCPT may involve activation of the NFKB1 pathway. Taken together, our results suggest that combined treatment with MLN4924 and 10-HCPT may be an effective strategy in HNSCC.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 51
·111152-111164
·
IF 5.8
Yang Qian,Wang Xueting,Shi Jing,Wei Jiaqi,He Yangqing
Despite S-doped C 3 N 4 can exhibit more efficient photo-reactivity than pure C 3 N 4 , there is still some space to further improve the detaching efficiency of electron-hole and enhance the photocatalytic efficiency of S-C 3 N 4 . The construction of heterojunction is an effective method to promote the photocatalytic efficiency. ZnIn 2 S 4 , as a novel photocatalyst, its VB (1.37 V) and CB (− 1.09 V) can match with S-C 3 N 4 . Therefore, we hope to construct the ZnIn 2 S 4 /S-C 3 N 4 heterojunction for boosting the photocatalytic activity of S-C 3 N 4 . In this paper, ZnIn 2 S 4 /S-C 3 N 4 heterojunction was prepared through hydrothermal method using S-C 3 N 4 , ZnCl 2 , InCl 3 ·4H 2 O, and thioacetamide as raw materials and heated at 160 °C for 16 h. The optimum 18% ZnIn 2 S 4 /S-C 3 N 4 nanocomposites exhibit dramatically enhanced photocatalytic performance for degradation of tetracycline with 86.3% removal rate within 120 min, higher than 50% degradation efficiency of pure S-C 3 N 4 . And in the process of photodegradation for tetracycline, the largest contribution rate is the photo-excited cavity (h + ), followed by ·O 2 − and ·OH. Herein, we have provided a good example for removing antibiotic residues by using S-C 3 N 4 -based heterojunction towards environmental remediation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yining Zhang,Mengyang Xu,Weiqiang Zhou,Xianghai Song,Xin Liu,Jisheng Zhang,Songtao Chen,Pengwei Huo
Step-scheme (S-scheme) heterojunctions can efficiently promote the separation of photogenerated carriers while maintaining the strong oxidation/reduction ability of photocatalysts; thus, research attention on S-scheme heterojunctions is increasing year by year. In this study, the S-scheme ZnO@ZnIn 2 S 4 (ZnO@ZIS) heterojunction was prepared successfully. Then, electron spin resonance (ESR) characterization was applied to prove the successful construction of the S-scheme heterojunction. Photoluminescence (PL), time-resolved photoluminescence (TRPL), and photoelectrochemical experiments have demonstrated efficient interfacial charge transport in ZnO@ZIS. Finally, the mechanism of CO 2 activation and electron transport was investigated by in situ Fourier transform infrared spectroscopy (FT-IR) and discrete Fourier transform (DFT) calculation analysis. The 40-ZnO@ZIS composite showed the best activity under light, and its CO and CH 4 yields reached 39.76 and 3.92 μmol∙g −1 ∙h −1 , respectively. This study provides a solution for optimizing the photocatalytic reduction activity of semiconductor photocatalysts by constructing S-scheme heterojunction materials to improve the CO 2 reduction capacity.
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SOLID STATE SCIENCES
·
2023
·
IF 3.5
Huadong Liu,Hao Sun,Du Ke Zhen,Cheng Jing liang,Sun XiaoYu
Monoclinic bismuth vanadate (m-BiVO 4 ) is a well-known photocatalytic material. However, its poor charge transport and photogenerated electron hole rapid recombination limit the application of m-BiVO 4 . In this paper, we successfully constructed a novel copper-sulfur co-doped carbon quantum dots (Cu, S-CQDs)/BiVO 4 nanocomposite through a facile and efficient route, which significantly improved the photocatalytic performance of BiVO 4 . The physicochemical properties of Cu, S-CQDs and Cu, S-CQDs/BiVO 4 samples were studied by various characterization. It was concluded from the degradation experiments that the photocatalytic degradation rate of rhodamine B reaches 99% in 60 min under natural light. The degradation curve compounds the quasi-primary kinetic model, and the kinetic coefficient of degradation is 0.07831 min −1 , which is 5.37 times than that of pure BiVO 4 . Moreover, the free radical scavenging experiments reveal that the hole and superoxide radicals play a major role in the photocatalysis process. After four cycles, the activity of photocatalyst exhibits high stability, which is extremely important for the photocatalytic process. In the summery, the prepared Cu, S-CQDs/BiVO 4 has many advantages, such as environmental-friendly, low cost and a wide range of applications.
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CHEMOSPHERE
·
2023
·
IF 8.8
Jie Tian,Yumeng Qi,Junyan Wei,Ahmed Rady,Saleh Maodaa,Ahmed A. Allam,Zunyao Wang,Ruijuan Qu
The degradation process of bisphenol S (BPS) in ozone/peroxymonosulfate (O 3 /PMS) system was systematically explored. The results showed that the removal efficiency of BPS by O 3 could be significantly improved with addition of PMS. Compared with ozonation alone, the pseudo-first-order constant ( k obs ) was increased by 2–5 times after adding 400 μM PMS. In O 3 /PMS system, accelerated removal of BPS was observed under neutral and alkaline conditions. The removal efficiency of BPS reached 100% after 40 s of reaction at pH 7.0, with the k obs of 0.098 s −1 . Moreover, Cu 2+ had a catalytic effect on the O 3 /PMS system, because it could catalyze the decomposition of ozone and PMS to produce •OH and SO 4 •- , respectively. Electron paramagnetic resonance illustrated that •OH and SO 4 •- were the reactive species in O 3 /PMS system. Twelve intermediates were identified by mass spectrometry, and the degradation reactions in O 3 /PMS system mainly included hydroxylation, sulfate addition, polymerization and β-scission. Finally, the toxicity of the products was evaluated by the EOCSAR program. Our results introduce an efficient method for BPS removal and would provide some guidance for the development of O 3 -based advanced oxidation technology .
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-10
·
IF 16.6
Li Fang,Yue Xiaoyang,Liao Yulong,Qiao Liang,Lv Kangle,Xiang Quanjun
Understanding charge transfer dynamics and carrier separation pathway is challenging due to the lack of appropriate characterization strategies. In this work, a crystalline triazine/heptazine carbon nitride homojunction is selected as a model system to demonstrate the interfacial electron-transfer mechanism. Surface bimetallic cocatalysts are used as sensitive probes during in situ photoemission for tracing the S-scheme transfer of interfacial photogenerated electrons from triazine phase to the heptazine phase. Variation of the sample surface potential under light on/off confirms dynamic S-scheme charge transfer. Further theoretical calculations demonstrate an interesting reversal of interfacial electron-transfer path under light/dark conditions, which also supports the experimental evidence of S-scheme transport. Benefiting from the unique merit of S-scheme electron transfer, homojunction shows significantly enhanced activity for CO 2 photoreduction. Our work thus provides a strategy to probe dynamic electron transfer mechanisms and to design delicate material structures towards efficient CO 2 photoreduction.
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Solar RRL
·
2023
·Vol. 7
·期 12
·2300188
·
IF 7.9
Yichao Wang,Zipeng Xing,Chunxu Wu,Meijie Liu,Jiapeng Gao,Na Zhang,Zhenzi Li,Haixia Liu,Wei Zhou
The development of heterojunction composite photocatalysts with sophisticated charge transfer mechanisms and interfaces is a promising approach to enhance photocatalytic efficiency. Herein, for the first time, a peanut-like Zn 0.5 Cd 0.5 S/BiVO 4 S-scheme heterostructure visible-light composite photocatalyst via a two-step hydrothermal method is synthesized. S-scheme heterostructures, which can maintain the maximum redox capacity in the conduction and valence bands of the catalyst, have been established as an effective charge transfer mode in the field of photocatalysis. The Zn 0.5 Cd 0.5 S/BiVO 4 heterojunction photocatalyst exhibits 99.52% degradation efficiency for tetracycline-based organic pollutants under visible light irradiation. In addition, the photocatalytic hydrogen production efficiency of the composite catalyst is as high as 8969.58 μmol g −1 h −1 , which is 69.24 and 4.35 times higher than that of single BiVO 4 and Zn 0.5 Cd 0.5 S, respectively. Through density functional theory calculations and experimental studies, the material conformed to the charge transfer mode of the S-scheme heterojunction is determined. The improved photocatalytic efficiency can be attributed to the formation of S-scheme heterogeneous interface, which bends the energy band at the interfacial contact, and the formation of an internal electric field, which hinders rapid charge recombination and prolongs the lifetime of charge carriers.
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