INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Wenyue Jiang,Bingxin Zhao,Ziting Li,Peng Zhou,Yuxin Zhao,Xiaoshuang Chen,Jinping Wang,Rui Yang,Chunling Zuo
The investigation of cost-effective and highly efficient electrocatalysts for alkaline water and simulative seawater oxidation is essential to the conversion and storage of renewable energy . In this paper, the Ce–NiSe 2 /CoP catalyst with multihole and ultrathin nanosheet structure is generated. The unique structural characteristics of Ce–NiSe 2 /CoP heterojunction nanosheets contribute the excellent OER performance under different alkaline 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl) electrolytes. Specifically, this catalyst exhucture is generated. The unique structural characteristics of Ce–NiSe 2 /CoP heterojunction nanosheets conibits the low overpotentials of 287 and 304 mV at the current density of 10 mA cm −2 , along with the Tafel slopes of 87.1 and 78.8 mV dec −1 in two solutions, respectively. Moreover, the Ce–NiSe 2 /CoP target product also displays good stability. The present study introduces a promising strategy for the advancement of high-performance electrocatalysts in green energy field.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2024
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IF 0
Zheng Yang,Zhang Lin,Wang Xiaocong,Guo Fenghui,Xing Yi,Li Guoliang,Yue Tao
The substantial amount of mercury emissions from coal-fired flue gas causes severe environmental contamination. With the Minamata Convention now officially in force, it is critical to strengthen mercury pollution control. Existing activated carbon injection technologies suffer from poor desulfurization performance and risk secondary-release risks. Therefore, considering the potential industrial application of adsorbents, we selected cost-effective and readily available activated coke (AC) as the carrier in this study. Four metal selenides—copper, iron, manganese, and tin—were loaded onto the AC to overcome the application problems of existing technologies. After 120 min of adsorption, the CuSe/AC exhibited the highest efficiency in removing Hg 0 , surpassing 80% according to the experimental findings. In addition, the optimal adsorption temperature window was 30–120 °C, the maximum adsorption rate was 2.9 × 10 −2 mg·g −1 ·h −1 , and the effectiveness of CuSe/AC in capturing Hg 0 only dropped by 5.2% in the sulfur-containing atmosphere. The physicochemical characterization results indicated that the AC surface had a uniform loading of CuSe with a nanosheet structure resembling polygon and that the Cu-to-Se atomic ratio was close to 1:1. Finally, two possible Hg 0 reaction pathways on CuSe/AC were proposed. Moreover, it was elucidated that the highly selective binding of Hg 0 with ligand-unsaturated Se − was the key factor in achieving high adsorption efficiency and sulfur resistance in the selenium-functionalized AC adsorbent. This finding offers substantial theoretical support for the industrial application of this adsorbent. Graphical Abstract
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zia Ur Rehman,Muhammad Bilal,Faheem K. Butt,Sajid Ur Rehman,Zeeshan Asghar,Kewang Zheng,Yongcai Zhang,Xiaoyong Xu,Jianhua Hou,Xiaozhi Wang
Graphitic carbon nitride is a promising photocatalyst to address environmental issues and energy applications. Herein, we develop an efficient defect-containing functionalized system of 2D selenium doped g-C 3 N 4 porous nanosheets via one pot with two-step temperature for the first time. During heat treatment, Se-infused g-C 3 N 4 nanosheets loosen stacking and form thinner nanosheets , which could effectively shorten the electronic path of charge migration. The introduction of nitrogen vacancies creates a midgap energy state below the CB, which improves the light-harvesting efficiency. Moreover, the dual effect of N vacancy and Se doping provides a driving force for the dissociation of excitons and achieves an effective spatial charge separation. High specific surface area (104.1 m 2 /g), suitable bandgap (2.65 eV), and good photocurrent response (0.45 µA cm −2 ) help to enhance the photocatalytic efficiency of 1-SeCN remarkably. Henceforth, high photocatalytic H 2 production rate of 5441 µmol g −1 h −1 and CO evolution rate of 31.5 µmol g −1 h −1 verifies the effective Se doping enhances the photocatalytic efficiency of g-C 3 N 4 . Furthermore, DFT calculations are consistent with experimental results and this facile engineering strategy provides a scalable way to develop a novel, efficient g-C 3 N 4 -based photocatalyst for H 2 production and CO 2 reduction.
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TALANTA
·
2025
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IF 6.1
Xiaofang Liu,Qun Wang,Huan Liu,Yong Zhang,Mei Yang,Danqun Huo,Changjun Hou
Timely detection of breast cancer not only positively influences patient treatment and life quality, but also possesses far-reaching implications for public health and medical research. And miRNAs, as emerging breast cancer-related biomarkers, demonstrate heightened sensitivity to disease progression. In this study, the same precursor was utilized to prepare micromaterials with large and small cavities, this was the safeguard for sensing probes and signals. And the signal amplification process was accomplished with strand displacement assistance by target excitation. Encouragingly, it was successfully and accurately detected miRNA-21 and miRNA-155 within 10 fmol/L - 10 nmol/L. Due to the unique sensing design, the signal can be read out not only by small fluorescent devices, but also by portable glucometers. The biosensor features several excellent working performances and illuminates resource-poor areas by equipping the most common glucometers. So, it is a sensitive, portable and promising biosensor.
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Materials
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2024
·Vol. 17
·期 7
·1509
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IF 3.1
Fan Xie,Zhiyao Ma,Jian Zhou
In addressing the global need for sustainable energy conversion, this study presents a breakthrough in thermoelectric materials research by optimizing the Bi2O2Se1–xTexsystem in the Bi2O2Se/Bi2O2Te pseudobinary series. Leveraging the principles of innovative transport mechanisms and defect engineering, we introduce tellurium (Te) doping into Bi2O2Se to enhance its thermoelectric properties synergistically. With the help of various advanced characterization tools such as XRD, SEM, TEM, XPS, FTIR, TGA, LFA, and DSC, combined with relevant resistance and density measurement techniques, we conducted an in-depth exploration of the complex interactions between various factors within thermoelectric materials. We recognize that the balance and synergy of these factors in the thermoelectric conversion process are crucial to achieving efficient energy conversion. Through systematic research, we are committed to revealing the mechanisms of these interactions and providing a solid scientific foundation for the optimal design and performance enhancement of thermoelectric materials. Finally, the advantage coefficient (ZT) of the thermoelectric material has been significantly improved. The crystallographic analysis confirms the formation of a continuous series of mixed crystals with varying Te concentrations, adhering to Vegard’s law and exhibiting significant improvements in electrical and thermal conductivities. The Bi2O2Se1–xTexcrystals, particularly the Bi2O2Se0.6Te0.4composition, demonstrate a peak ZT of 0.86 at 373 K. This achievement aligns with recent advancements in defect-enabled mechanisms and band convergence and sets a new standard for high-performance thermoelectrics. The study’s findings contribute significantly to the ongoing quest for efficient thermal-to-electrical energy conversion, offering a promising avenue for future sustainable energy technologies.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Hongxiu Yin,Ying Gao,Xue Zhou,Xiangjun Chen,Zhichao Hu,Lingyu Zhang,Lu Li,Chungang Wang
The oral administration of drugs for cancer therapy can maintain optimal blood concentrations, is biologically safe and simple, and is preferred by many patients. However, the complex lumen environment, mucus layer, and intestinal epithelial cells are biological barriers that hinder the absorption of orally administered drugs. In this study, sea urchin-like manganese-doped copper selenide nanoparticles (Mn-Cu 2−x Se NPs) were designed using an anion exchange method and coated with calcium alginate and chitosan (AC) to form Mn-Cu 2−x Se@AC capsules. The pH-responsive swelling behavior of the AC protective layer aided doxorubicin (DOX)-loaded Mn-Cu 2−x Se NPs in overcoming multiple biological barriers, maintained their stability in gastric acid, and facilitated the release of the NPs in the small intestine. The intestinal epithelial cell permeability of DOX/Mn-Cu 2−x Se NPs was confirmed using a monolayer absorption model involving Caco-2 human epithelial cells. The released DOX/Mn-Cu 2−x Se NPs smoothly passed through the mucus layer, and were absorbed by intestinal epithelial cells. In mice, the NPs circulated in the blood and passively targeted the tumors through blood circulation by enhancing the permeability and retention effect to achieve significant tumor suppression and reduce damage to normal tissues. In addition, the unique sea urchin-like morphology of Mn-Cu 2−x Se NPs enhanced the absorption in the near-infrared-II (NIR-II) window for photothermal therapy, realized the near-infrared-stimulated response release of DOX for increased chemotherapy, and promoted the Fenton-like effect because of the doping of manganese ions for chemodynamic therapy. These effects could permit the development of various synergistic cancer treatments. The use of DOX/Mn-Cu 2−x Se@AC capsules as a multistage oral drug delivery system may overcome the sequential absorption barriers that currently hinder chemotherapy, chemodynamic, and photothermal therapies.
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Journal of Water Process Engineering
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2024
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IF 6.3
Xinpeng Chen,Aijing Li,Lili Xing,Jiapeng Wang,Yurong Sun,Yifeng Wang,Guoqiang Chen,Tieling Xing,Lei Xu
Photocatalysis is based on ultraviolet light, while piezoelectric catalysis is powered by mechanical energy and piezoelectric effect. Both types of catalysis have been employed in degradation of pollutants and wastewater treatment. In this work, molybdenum diselenide (MoSe 2 ) was mixed with polyvinylidene difluoride (PVDF) to produce a MoSe 2 /PVDF composite foam with flexible porous structure. The composite foam exhibited excellent light absorption and effective Rhodamine B (RhB) removal. MoSe 2 could enhance the piezoelectric catalytic performance of PVDF by promoting the formation of β-phase. In addition, this composite foam piezo-photocatalytically removed more than 99.1 % of RhB within 60 min under light irradiation and stirring. In electron spin resonance (ESR) and capture active species experiments, it was found that •OH, •O 2 − and h + contribute to the removal of RhB. The Fukui function based on Density Functional Theory (DFT) and mass spectrometry were used to identify the degradation pathway of RhB. The evaluation results of toxicity evaluation software (T.E.S.T.) to degradation intermediates of RhB showed that the overall toxicity gradually decreased in degradation process. Due to the existence of MoSe 2 , the composite represented an outstanding evaporation rate (2.23 kg m −2 h −1 ) under one solar irradiation. Furthermore, MoSe 2 /PVDF also exhibited remarkable antibacterial properties, which is favorable to its practical application. This work presents a novel high-performance piezo-photocatalysis material, which proposes innovative environmental governance strategies for obtaining clean water through multi-component synergism.
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BIORESOURCE TECHNOLOGY
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2024
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IF 9.7
Jingjing Hu,Peihua Liu,Qiangqiang Wang,Xuyuan Nie,Jianhua Tan,Junchao Shu,Junjian Mai,Yi Cao,Yongdong Zou,Zebo Huang
Nostoc sphaeroides , originally discovered in selenium-rich fields, is a photosynthetic, nitrogen-fixing cyanobacterium that forms edible spherical macrocolonies. However, prolonged selenium supplementation negatively impacts colony quality in culture. To address this, a two-phase cultivation strategy was developed to spatiotemporally separate biomass accumulation from selenium enrichment, resulting in high-quality selenium-enriched N. sphaeroides colonies. The first phase focused on colony growth in nitrogen-free BG-11 0 medium, while the second phase emphasized selenium enrichment in selenium-supplemented, phosphorus-reduced, and nitrogen-containing BG-11 medium (“selenium enrichment medium”). Scale-up to 300 L confirmed the robustness of this process, achieving desired colony hardness of ∼3 newtons, selenium content of ∼350 μg/g, and yield of ∼0.5 g/L (dry weight). Additionally, polysaccharides containing ∼110 μg/g selenium were isolated from the colonies, exhibiting biochemical properties similar to selenium-free polysaccharides from control colonies. These results provide valuable insight into the potential of N. sphaeroides as a cell factory chassis for producing selenium bioproducts.
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Applied Materials Today
·
2024
·
IF 7.2
Jingyue Wang,Yilei Ding,Jianan Liu,Yian Chen,Yuanfeng Wang,Ansha Zhao
While revascularization is acknowledged as a critical process in wound healing, the scenario becomes more complex when considering diabetic wounds. In such cases, oxidative stress introduces two primary challenges that impede the healing process: ensuring the directional movement of functional cells to the wound site and combating the heightened risk of infection. These challenges underscore the need for innovative therapeutic strategies that can effectively address these restrictions in the context of diabetic wound healing. Hydrogen sulfide (H 2 S) acts as a signaling gas and shows significant therapeutic potential in biomedical research. In this study, we encapsulate Allicin, a natural H 2 S donor, in selenium micelles that specifically respond to oxidative stress. To create the GMA (Allicin@Micelle-GelMA) Composite hydrogel system, we utilize Methacrylic anhydride gelatin (GelMA) hydrogel as a matrix and form it through in-situ light curing. This composite system effectively addresses the problem of healing deep, narrow, and lengthy wounds that pose a challenge, as well as preventing nonspecific sudden release of H 2 S. Additionally, the composite hydrogel system promotes angiogenesis, anti-inflammatory, antibacterial, and antioxidant properties. It also facilitates the directional movement of stem cells and macrophages, as demonstrated through the chicken embryo chorioallantoic membrane vascular test and the establishment of a diabetes wound model that is difficult to heal. Consequently, we conclude that the GMA composite hydrogel has the potential to serve as a versatile skin wound dressing that can effectively respond to oxidative stress.
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ACS Applied Nano Materials
·
2024
·
IF 5.3
Qiaocan Huang,Zunxian Yang,Yuliang Ye,Zongyi Meng,Zhiwei Zeng,Hongyi Hong,Songwei Ye,Zhiming Cheng,Qianting Lan,Bingqing Ye,Yuanqing Zhou,Zihong Shen,Wenbo Wu,Jiaxiang Wang,Ye Chen,Hui Zhang,Tailiang Guo,Fushan Li,Yongyi Chen,Zhenzhen Weng
Cadmium selenide (CdSe)-based colloidal quantum dots (QDs) exhibit unique properties such as tunable colors, narrow emission, high photoluminescence efficiency, and high stability, making them one of the most promising candidates for next-generation displays. CdSe-based QD light-emitting diodes (QLEDs) have attracted more and more attention mainly due to their advantages including high electroluminescence brightness, low turn-on voltage, and ultrathin device structures. However, there are still many challenges, mainly including the lattice defects aroused by lattice strain during the QD growth process and the surface defects caused by ligand desorption. CdSe-based QLEDs with high photoelectronic performance were finally achieved in our work just by optimizing the synthesis processes and further reducing defects in QD shells. There was a great decrease in the defect density of the QD shell indirectly according to their testing results in the fluorescence lifetime and single-carrier devices. After the reaction system was diluted with a solvent in the hot-injection method, there was some blue shift in the QD emission observed from 595 to 562 nm. Then, with the ZnSe shell further coated onto the QD, the size of the effective emission center was reduced to some extent, and further, a blue shift in the emission was obtained with the wavelength down to 533 nm. Finally, on the outside of the as-synthesized QDs, the ZnS shell was used to passivate and further protect the ZnSe layer, which greatly increased the average fluorescence lifetime of the CdSe-based QDs from 22.94 to 36.41 ns. Additionally, a layer of lithium fluoride (LiF) with optimized thickness was further deposited onto the QD emitting layer to prevent ligand desorption from ethanol solvent cleaning. Therefore, the CdSe-based QD fluorescence efficiency was greatly improved and the maximum external quantum efficiency (EQE) of 8.06% for our CdSe-based QLEDs was achieved with a LiF layer of 3 nm.
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LANGMUIR
·
2024
·
IF 3.7
Zhi Li,Minglong Sun,Yalin Li,Ziang Liu,Dongxiang Zhang,Yingmin Liu,Xinghui He,Mo-Jie Sun
Metal–organic frameworks (MOFs) are crystalline porous materials for storage and energy conversion applications with three-dimensional pore structure, high porosity, and specific surface area, which are widely utilized in electrocatalysis. Herein, MoSe2/NiSe composites were synthesized by selenization reaction using NiMOF as the precursor. The composites were hollow nanoflower structures with a synergistic effect between MoSe2 and NiSe to promote rapid electron transfer, which exhibited good hydrogen evolution reaction performance in an alkaline medium. At a current density of 10 mA/cm2, the HER overpotential reaches 80 mV, the Tafel slope is 33.86 mV/dec, and the material has good stability, with polarization curves remaining essentially unchanged after 3000 cycles. These results indicate that the method has a promising application in the preparation of efficient and sustainable catalysts for hydrogen production in alkaline medium.
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ACS Sensors
·
2025
·
IF 9.1
Xiaolong Sun,Yue Hou,Zheng Zhu,Qianfeng Ding,Wenjie Zhou,Zhanglong Xia,Sijia Yan,Yong Liu,Qingqing He,Yang Yang,Ziyu Wang
Thermoelectric textiles have garnered significant attention in energy harvesting and temperature sensing due to their comfort and reliable long-term power generation capabilities. However, existing thermoelectric textiles rarely realize antibacterial, high output performance, and sensing capabilities simultaneously. Here, we present a facile and scalable method for fabricating n-type silver selenide (Ag2Se) cotton threads with exceptional antibacterial, high power output, and advanced sensing capabilities. The Ag–Ag2Se segmented structures are prepared using the segmented selenization method. Subsequently, a thermoelectric textile consisting of 50 pairs of p–n legs is fabricated, which can generate a power density of 500 μW m–2 at a temperature difference of 30 K, and it can provide an output voltage of 24.7 mV when worn on the arm at room temperature. The textile-based sensor exhibits temperature detection (0.7 K) and a response time (2.49 s). Integrating Ag2Se cotton threads onto textiles enables the utilization of multipixel touchpads for writing and communication. Additionally, these sensors can be incorporated into gloves to accurately detect the surrounding objects’ temperatures. This thermoelectric cotton thread not only facilitates energy harvesting but also establishes a solid foundation for widespread application in multifunctional textile electronics.
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