SENSORS AND ACTUATORS A-PHYSICAL
·
2023
·
IF 4.6
Ruizhen Li,Wanzhen Yuan,Yu Hu,Yonggang Zeng
Propranolol , a widely used β-adrenergic receptor antagonist drug with potential toxic effects to organisms and human beings, was not completely removed from environment through traditional wastewater treatments . It is necessary to sensitively and selectively monitor the trace content propranolol in various samples. In this work, a novel photoelectrochemical (PEC) aptasensor based on Au nanoparticles (NPs) modified g-C 3 N 4 /BiPO 4 heterojunction was successfully fabricated for detecting (S)-propranolol (S-Pro), an important racemic enantiomer of propranolol. Herein, g-C 3 N 4 was employed as visible light-active semiconductor. The photocatalytic activity of g-C 3 N 4 was enhanced via forming heterojunction with BiPO 4 to facilitate the separation and migration of photogenerated carriers . In addition, Au NPs with perfect conductivity and surface plasmon resonance (SPR) effect are not only beneficial to the electron transfer and visible light harvest of g-C 3 N 4 /BiPO 4 heterojunction, but also the crucial factor on assembling S-Pro-binding DNA aptamer via Au-S bonding. At the same time, as a π-π conjugated material, g-C 3 N 4 with large surface area also provides an excellent platform for loading Au NPs. Under the visible light illumination, the PEC aptasensor displayed high PEC performance. On such a sensor, specific captured S-Pro by the aptamer was quickly oxidized by the photogenerated holes to inhibit the recombination of the photogenerated carriers, enhanced the PEC response, and realized the detection of S-Pro. Under optimal conditions, the designed PEC aptasensor exhibited a wide linear range of 10 nM to 1000 nM with a low detection limit (defined as S/N = 3) of 2.55 nM. Moreover, the proposed sensor displayed high selectivity , good reproducibility, and general long-term stability. And the S-Pro in real sample was accurately detected using this proposed sensor.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 38
·15035-15046
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IF 4.5
Wang Xiongwei,Ma Rui-Juan,Guo Tingyu,Zhang Xuewei,Wang Hui,Zhao Xu
Abstract The hydrogen iodide decomposition reaction of the sulfur-iodine (SI) cycle is realized by electrolysis at room temperature to achieve efficient hydrogen production, while iodine is recycled throughout the SI reaction. In this work, we report a facile hydrothermal method for the synthesis of sulfur-doped titanium dioxide (S- \(\hbox {TiO}_2\) ) nanosheets with evenly distributed on the Ti foil (S- \(\hbox {TiO}_2\) /Ti). The noble metal-free S- \(\hbox {TiO}_2\) /Ti electrode demonstrates excellent electrochemical catalytic performance for iodine evolution reaction. It can deliver a high current density of 100 mA/ \(\hbox {cm}^2\) with a potential of 1.05 V, which is close to 90% of that of precious metal platinum and 5.6 times of bare Ti foil. Furthermore, the S- \(\hbox {TiO}_2\) /Ti electrode is stable in a mixed acid solution of HI and \(\hbox {H}_2\hbox {SO}_4\) . Compared to \(\hbox {TiO}_2\) /Ti, diffuse reflectance spectroscopy and ultraviolet photoelectron spectroscopy analysis evidence a reduction in the band gap and work function of S- \(\hbox {TiO}_2\) /Ti due to the doping of sulfur. Correspondingly, the current efficiency approaches to 100% under the electrolysis constant voltage 1.30 V. Eventually, the detailed mechanism to describe the improvement of the electrocatalytic performance was suggested. Graphical abstract
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JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2023
·Vol. 56
·期 49
·495103
·
IF 3.4
Yujiao Ma,Yuzhou Sun,Zihan Zhang,Haokai Zhao,Haifeng Gao,Qing Zhou,Wenbo Li,Xiaoyun Teng,Chao Gao,Wei Yu
In this paper, the open-circuit voltages (VOC) of Cu2ZnSn(S,Se)4 (CZTSSe) solar cells were improved by soaking the CZTSSe films in Cd/NH3 solutions before the deposition of buffer layers. The effects of Cd/NH3 soaking on the properties of CZTSSe films and solar cells were investigated in depth. We found Cd/NH3 soaking can promote downward band bending of the CZTSSe layer at the surface region. In addition, the Cd/NH3 soaking can eliminate the deep level acceptor in CZTSSe and decrease the density of the defects at the absorber/buffer interface. These effects can significantly reduce the carrier recombination in the depletion region of CZTSSe solar cells. As a result, the VOC of CZTSSe solar cells were increased from ∼460 mV to ∼480 mV, the efficiency of the best CZTSSe solar cell was increased from 10.2% to 11.6% by the Cd/NH3 soaking process.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Songyu Yang,Kailin Wang,Qiao Chen,Yan Wu
S-scheme heterostructure photocatalysts can achieve highly efficient solar energy utilization. Here, single-atom Ni species were deposited onto TiO 2 /g-C 3 N 4 (TCN) composite photocatalyst with an S-scheme heterojunction for highly efficient photocatalytic water splitting to produce hydrogen. Under solar irradiation, it realized the hydrogen production activity of 134 µmol g –1 h –1 , about 5 times higher than the TCN without atomic Ni. In-situ Kelvin probe force microscopy characterization and the density functional calculation certify that by forming the S-scheme heterojunction, the photo-excited electrons from the TiO 2 combine with the photogenerated holes at the coupled g-C 3 N 4 driven by a built-in electric field. More importantly, the single-atom Ni species stabilized the photogenerated electrons from the g-C 3 N 4 could effectively enhance the charge separation between the holes on the valence band of TiO 2 and electrons at the conduction band of g-C 3 N 4 . Meanwhile, the Ni atoms act as the surface catalytic centers for the water reduction reaction, which greatly improves the reactivity of the photocatalyst. The present work provides a new approach for developing noble metal-free heterojunctions for high-efficiency photocatalysis.
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Journal of Materials Chemistry B
·
2023
·
IF 7
Wenbin Nan,Fan Wang,Hao Wang,Wenchi Xiao,Linxiao Li,Chao Zhang,Yulu Zhang,Linna Dai,Zhihao Xu,Guoyun Wan,Yongxue Wang,Hongli Chen,Qiqing Zhang,Yongwei Hao
Treating chronic wounds requires transition from proinflammatory M1 to anti-inflammatory M2 dominant macrophages. Based on the role of tumor extracellular vesicles (tEVs) in regulating the phenotypic switching from M1 to M2 macrophages, we propose that tEVs may have a beneficial impact on alleviating the overactive inflammatory microenvironment associated with refractory wounds. On the other hand, as a nitric oxide donor, S-nitrosoglutathione (GSNO) can regulate inflammation, promote angiogenesis, enhance matrix deposition, and facilitate wound healing. In this study, a guar gum-based hydrogel with tEVs and GSNO was designed for the treatment of diabetic refractory wounds. This hybrid hydrogel was formed through the phenyl borate bonds, which can automatically disintegrate in response to the high reactive oxygen species (ROS) level at the site of refractory diabetic wounds, releasing tEVs and GSNO. We conducted a comprehensive evaluation of this hydrogel in vitro, which demonstrated excellent performance. Meanwhile, using a full-thickness excision model in diabetic mice, the wounds exposed to the therapeutic hydrogel healed completely within 21 days. The increased closure rate was associated with macrophage polarization and collagen deposition, accelerated fibroblast proliferation, and increased angiogenesis in the regenerating tissues. Therefore, this multifunctional hybrid hydrogel appears to be promising for clinical applications.
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高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Kexue Liu,Chunliu Liang,Huijuan Lv,Xiangfeng Yao,Xianxu Li,Jia Ding,Na Chen,Suo Wang,Wenrong Liu,Xue Hu,Jun Wang,Huanshun Yin
As a kind of plasticizer , butyl benzyl phthalate (BBP) presents a serious hazard to the ecosystem. Therefore, there is a strong need for an effective technique to eliminate the risk of BBP. In this work, a new photocatalyst of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 with an S-scheme heterojunction was synthesized using Bi(NO 3 ) 3 as the Bi source, Na 2 S as the S source, and DMF as the carbon source and reductant. Numerous techniques have been used to characterize Bi/Bi 2 O 2 CO 3 /Bi 2 S 3, such as scanning electron microscopy, high-resolution transmission electron microscopy , X-ray diffraction, and X-ray photoelectron spectroscopy. The improved photoactivity of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 was evaluated by photoelectrochemical response, electrochemical impedance spectroscopy, photoluminescence , UV–Vis diffuse reflectance spectroscopy, and electrochemical Mott Schottky spectroscopy. The enhanced photocatalytic activity of this composite for BBP degradation under simulated sunlight irradiation could be attributed to the surface plasmon resonance effect of Bi metal and the heterojunction structure of Bi 2 O 2 CO 3 and Bi 2 S 3 . The degradation rate of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 was 85%, which was 4.52 and 1.52 times that of Bi 2 O 2 CO 3 and Bi 2 S 3 , respectively. The prepared photocatalyst possessed good stability and reproducibility in eliminating BBP. The improved photocatalytic activity of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 was demonstrated with the formation of an S-scheme heterojunction, and the degradation mechanism was discussed with a liquid chromatograph mass spectrometer .
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高影响因子
Sustainable Materials and Technologies
·
2023
·
IF 9.6
Dandan Ouyang,Liuqian Yang,Ya-nan Wang,Yongsheng Li,Feng Yu,Jiao Yin
Carbon materials have great potential in achieving excellent potassium-ion batteries (PIBs), while the low theoretical capacity of carbon materials limits the application of potassium ion batteries . Here, we reported an amorphous porous carbon with rich N-S bonds (N-S/C) by simple self-assembly possess and pyrolysis possess. The prepared N-S/C material possesses plentiful N-S bonds, which can act as active center to enhance the electrochemical capacity and accelerate transport dynamics. In addition, abundant porous structure can increase the contact area between electrode materials and electrolyte to shortens the diffusion path of ion transport, thereby improving the rate performance. As PIBs anodes, the N-S/C material exhibits a markedly enhanced reversible capacity of 389 mAh g −1 at 50 mA g −1 , excellent cycling stability (188.8 mAh g −1 at 500 mA g −1 after 1000 cycles) and rate performance (105 mAh g −1 at 2 A g −1 ). Importantly, the in-situ Raman unravels a reversible mechanism that intercalation/deintercalation of K + into/from the N-S/C, and the electrochemical analysis shows the N-S bond can improve the capacitive activity and enable fast kinetics toward superior K + -storage. These results demonstrate a promising carbonaceous anode material for PIBs and may provide guidance for designing of electrode materials of PIBs.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Lang Pei,Zhenggang Luo,Xusheng Wang,Zhanfeng Ma,Yuhang Nie,Jiasong Zhong,Ding Yang,Sateesh Bandaru,Bao-Lian Su
The conversion of CO 2 into syngas , a mixture of CO and H 2 , via photocatalytic reduction , is a promising approach towards achieving a sustainable carbon economy. However, the evolution of highly adjustable syngas, particularly without the use of sacrifice reagents or additional cocatalysts, remains a significant challenge. In this study, a step-scheme (S-scheme) 0D ZnGa 2 O 4 nanodots (∼7 nm) rooted g-C 3 N 4 nanosheets (denoted as ZnGa 2 O 4 /C 3 N 4 ) heterojunction photocatalyst was synthesized vis a facial in-situ growth strategy for efficient CO 2 -to-syngas conversion. Both experimental and theoretical studies have demonstrated that the polymeric nature of g-C 3 N 4 and highly distributed ZnGa 2 O 4 nanodots synergistically contribute to a strong interaction between metal oxide and C 3 N 4 support. Furthermore, the desirable S-scheme heterojunction in ZnGa 2 O 4 /C 3 N 4 efficiently promotes charge separation, enabling strong photoredox ability. As a result, the S-scheme ZnGa 2 O 4 /C 3 N 4 exhibited remarkable activity and selectivity in photochemical conversion of CO 2 into syngas, with a syngas production rate of up to 103.3 μ mol g −1 h −1 , even in the absence of sacrificial agents and cocatalyst. Impressively, the CO/H 2 ratio of syngas can be tunable within a wide range from 1:4 to 2:1. This work exemplifies the effectiveness of a meticulously designed S-scheme heterojunction photocatalyst for CO 2 -to-syngas conversion with adjustable composition , thus paving the way for new possibilities in sustainable energy conversion and utilization.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Wei Xie,Qingfeng Zhang,Shuai Song,Xueli Cheng,Ying Yang,Longlu Wang,Xiaoping Ouyang,Shuhong Xie,Jianyu Huang
Anode materials with excellent rate capability, capacity, and cycle life have been a challenge in obtaining cost-effective K-ion batteries (KIBs). Based on the concept of waste recycling, we prepared the S-doped (21.5%) amorphous carbon/carbon quantum dots coupled micro-frame (SCMF) by combining chemical exfoliation and S/Se-assisted carbonization. SCMF exhibited the advantages of integrating amorphous carbon and carbon quantum dots (CQDs). The CQDs serve as fast electron channels, while amorphous carbon can accommodate more large-size K-ions and mitigate volume expansion. In KIBs, SCMF maintained a high reversible capacity (414.0 mAh g −1 , after 100 cycles at 100 mA g −1 ), a good rate capability (224.0 mAh g −1 , 2000 mA g −1 ), and excellent capacity retention (208.9 mAh g −1 , after 2000 cycles at 1000 mA g −1 ). The molecular dynamic simulation revealed that CQDs provided fast electron transport channels and that C, O and S atoms had suitable interactions with K, facilitating potassium storage. Moreover, the potassium-ion capacitor (PIC) assembled from SCMF and activated carbon exhibited stable electrochemical performance, proving its potential for application. The research provided valuable insights into the reuse of biomass waste in new secondary batteries.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Juan Du,Qiao Han,Cheng Liu,Hongda Wu,Lufan zheng,Zhanxu Yang
The surface modification strategy has broken through the restriction of hydrogen evolution activity caused by low conductivity inert surfaces of MoS 2 during hydrogen evolution reaction . In this work, a new strategy for regulating the interface structure between MoS 2 and MoP using sulfur vacancy is proposed, which is derived from the synthesis of molybdenum disulfide nanotubes with rich S-vacancy (Sv-MoS 2 ) by reduction. Subsequently, Sv-MoS 2 was phosphated by introducing a P source, and the obtained (MoP/Sv-MoS 2 -8) composite. The introduction of P atoms provides more active sites for hydrogen adsorption and desorption by replacing S atoms to form (Mo-P) covalent bonds , further increase the number of S vacancies to activate the inert interface. The synthesized MoP/Sv-MoS 2 -8 has excellent catalytic activity and good cyclic stability, showing a lower Tafel slope of 60 mV·dec −1 at a current density of 10 mA·cm −2 , and no potential attenuation after the cyclic stability test for 24 h. The excellent HER performance is mainly due to the synergistic effect of P atom doping and S vacancy, which greatly reduces the energy barrier of the Volmer step and the adsorption/desorption of the H* intermediate step.
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高影响因子
Journal of Composites Science
·
2023
·Vol. 7
·期 7
·280
·
IF 3.3
Ge-Ge Zheng,Xin Lin,Zhen-Xing Wen,Yu-Hao Ding,Rui-Hui Yun,Gaurav Sharma,Amit Kumar,Florian J. Stadler
Photocatalytic degradation plays a crucial role in wastewater treatment, and the key to achieving high efficiency is to develop photocatalytic systems that possess excellent light absorption, carrier separation efficiency, and surface-active sites. Among various photocatalytic systems, S-type heterojunctions have shown remarkable potential for efficient degradation. This work delves into the construction of S-type heterojunctions of ternary indium metal sulfide and bismuth ferrite nanofibers with the introduction of sulfur vacancy defects and morphology modifications to enhance the photocatalytic degradation performance. Through the impregnation method, BiFeO3/ZnIn2S4heterojunction materials were synthesized and optimized. The 30% BiFeO3/ZnIn2S4heterojunction exhibited superior photocatalytic performance with higher sulfur vacancy concentration than ZnIn2S4. The in-situ XPS results demonstrate that the electrons between ZnIn2S4and BFO are transferred via the S-Scheme, and after modification, ZnIn2S4has a more favorable surface morphology for electron transport, and its flower-like structure interacts with the nanofibers of BFO, which has a further enhancement of the reaction efficiency for degrading pollutants. This exceptional material demonstrated a remarkable 99% degradation of Evans blue within 45 min and a significant 68% degradation of ciprofloxacin within 90 min. This work provides a feasible idea for developing photocatalysts to deal with the problem of polluted water resources under practical conditions.
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高影响因子
Nanoscale Advances
·
2023
·Vol. 6
·期 2
·722-731
·
IF 4.7
Jiaxi Wang,Wenting Chen,Lei Cao,Mengyan Zhou,Yongkang Geng,Yifei Liu,Shushu Ding,Ding-Yi Fu
Hereby, facile-green copper nanoclusters templated by glutathione S-transferase (GST-CuNCs) have been innovatively synthesized via a simple one-pot stirring method at room temperature. The as-prepared nanoclusters exhibited uniform size with satisfactory fluorescence intensity, good stability and low cytotoxicity. Significantly, the fluorescence of the obtained GST-CuNCs could be considerably enhanced by the addition of chlorotetracycline (CTC) rather than other analogues of CTC, which was ascribed to the aggregation-induced enhancement caused by the interaction between CTC and GST. The enhanced fluorescence intensity demonstrated a good linear correlation with the CTC concentration in the range of 30–120 μM (R2 = 0.99517), and the low detection limit was 69.7 nM. Furthermore, the proposed approach showed favorable selectivity and anti-interference toward CTC among prevalent ions and amino acids. Additionally, this nanoprobe was also applied to the quantitative detection of CTC in serum samples with satisfactory outcomes, which demonstrated excellent prospects for practical applications.
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高影响因子
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