JOURNAL OF PLANT GROWTH REGULATION
·
2022
·Vol. 42
·期 3
·2006-2022
·
IF 4.64
Wang Junhong,Cheng Jun-Hu,Sun Da-Wen
Previous studies have shown the great potential of using plasma-activated water (PAW) on improving agriculture seed germination, however, information on the influence of PAW on crop plantlet juice remains scanty. In this research, the effect of PAW generated by atmosphere pressure Ar–O 2 plasma jet for 1–5 min on wheat seed germination, seedling growth and nutritional properties of wheat plantlet juice was investigated. Results revealed that all PAWs could enhance wheat seed germination and seedling growth in 7 days by improving the germination rate, germination index, fresh weight, dry weight and vigour index, and especially that PAW activated for 3 min (PAW-3) showed the best overall performance. In addition, the application of PAWs enhanced the nutritional properties of wheat plantlet juice from those grown for 14 days by improving total soluble solids, protein content, photosynthetic pigments, total phenolic content, antioxidant activity, enzyme activity, free amino acids and minerals content, and the best enhancement was also observed in PAW-3. It was concluded that PAWs would be an effective technique to enhance the growth and nutritional properties of crop sprouts, which could be served as functional foods in many forms.
研究领域:
农业科学
·
植物生理学
·
食品科学
✓ 已验证
DOI
PubMed
高影响因子
ACS Omega
·
2023
·
IF 4.1
Jie Liang,Weiwei Zhang,Jun Wang,Wanzhen Li,Fei Ge,Weihao Jin,Yugui Tao
Recently, the combination of chemotherapy and chemodynamic therapy (CDT) has become a desirable strategy in the treatment of cancer. However, a satisfactory therapeutic outcome is often difficult to achieve due to the deficiency of endogenous H2O2 and O2 in the tumor microenvironment. In this study, a CaO2@DOX@Cu/ZIF-8 nanocomposite was prepared as a novel nanocatalytic platform to enable the combination of chemotherapy and CDT in cancer cells. The anticancer drug doxorubicin hydrochloride (DOX) was loaded onto calcium peroxide (CaO2) nanoparticles (NPs) to form CaO2@DOX, which was then encapsulated in a copper zeolitic imidazole ester MOF (Cu/ZIF-8) to form CaO2@DOX@Cu/ZIF-8 NPs. In the mildly acidic tumor microenvironment, CaO2@DOX@Cu/ZIF-8 NPs rapidly disintegrated, releasing CaO2, which reacted with water to generate H2O2 and O2 in the tumor microenvironment. The ability of CaO2@DOX@Cu/ZIF-8 NPs to combine chemotherapy and CDT was assessed by conducting cytotoxicity, living dead staining, cellular uptakes, H&E staining, and TUNEL assays in vitro and in vivo. The combination of chemotherapy and CDT of CaO2@DOX@Cu/ZIF-8 NPs had a more favorable tumor suppression effect than the nanomaterial precursors, which were not capable of the combined chemotherapy/CDT.
研究领域:
生物医学工程
·
药学
·
癌症研究
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xing Wang,Yuqi Tang,Jiankang Liang,Yongfei Zhao,Li Yang,Zhengjian Qi
TTIMN NPs prepared based on TTIMN has the function of targeting lipid droplet to induce tumor regression by depleting GSH and inactivating GPX4. Meanwhile, the mode of TTIMN NPs catalyzed the conversion of O 2 −• was also clarified according to in vivo experiments, which indicated it could initiate a series of O 2 −• -mediated bio-catalytic reactions to gain autonomously generated O 2 inside solid tumors. TTIMN NPs sensitized O 2 −• formation even under severe O 2 shortage environment, and a part of it would be converted into highly toxic OH•, subsequently triggering the release of cytochrome c and activating the cascade of the Caspase family that ultimately led to cell apoptosis. Self-generated O 2 inhibited tumor proliferation and metastasis mainly by interfering with HIF-related signaling and downregulating DNA methylation. TTIMN NPs has less systemic toxicity in blood systems and no effect on major organs, and blocked tumor progression by maintaining self-metabolism and immune system stability.
研究领域:
纳米技术
·
光动力治疗
·
肿瘤学
·
生物化学
·
药学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2011
·Vol. 14
·期 1
·130-135
·
IF 5.472
Bin Li,An-Hua Liu,Liang-Nian He,Zhen-Zhen Yang,Jian Gao,Kai-Hong Chen
Readily available iron compounds were found to be active catalysts for the selective oxidation of sulfide to sulfoxide with molecular oxygen as the oxidant in polyethylene glycol (PEG). As an indispensable component, PEG had a great promotive effect on the reaction. Notably, high conversion (>99%) along with excellent chemo-selectivity of up to 94% could be attained by using Fe(acac)2 as the catalyst at 100 °C. This methodology was proved to be applicable for the transformation of various aromatic and aliphatic sulfides into the corresponding sulfoxides with high selectivity. PEG is considered to play a crucial role in stablizing the Fe(IV)-oxo species formed in situ which is supposed to be responsible for the sulfide oxidation.
研究领域:
有机化学
·
催化化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Bohua Li,Jingning Lai,Fengling Zhang,Wen Sun,Zhengqiang Hu,Boshun Gui,Nan Chen,Li Li,Feng Wu,Renjie Chen
LiI in Li-O 2 batteries has shown promise in reducing charge overpotential. However, the shuttle effect of oxidated iodine species (OISs) can lead to lithium metal corrosion and loss of OISs. During the discharging process, these iodine species can undergo side reactions, resulting in the accumulation of LiOH and other parasitic products, which in turn accelerates battery failure. In this work, we have drawn inspiration from mussel protein and utilized a simple co-deposition method to form a robust biomimetic functionalized coating on the surface of the glass fiber separator. This was achieved by grafting catechol/polyamine (CA/PA) with 11-mercaptoundecanoic acid (MUA). This separator exhibits strong electrostatic repulsion towards negatively charged OISs and, conversely, electrostatic attraction towards Li + , this dual action effectively suppresses the shuttle effect and facilitates Li + transport. When equipped with this modified separator, the Li-O 2 battery effectively reduces the accumulation of LiOH and demonstrates significantly enhanced rate performance and cycle stability. Our findings provide a versatile approach for the design of modified separators for Li-O 2 batteries with redox mediators (RMs).
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Dan Li,Fu Sun,Yuqing Zhang,Yulong Liu,Hao Sun,Haiming Xie,Jia Liu,Seung-Taek Myung,Jiefang Zhu
In situ characterization on interface stability has been hardly tried in redox mediator (RM)-involved Li-O 2 battery thus far. Here, benzyltriethylammonium iodide (BTEAI) can act as a self-defensive RM in the electrolyte LiTFSI/TEGDME to enhance the reaction kinetics and increase the cycling stability by suppressing the redox shuttling. I - effectively reduces the charging overpotential by changing decomposition route for Li 2 O 2. BTEA + can facilitate LiTFSI decomposition in the electrolyte, and participate in formation of an organic–inorganic composite SEI-contained layer on Li anode. Moreover, for the first time, non-destructive synchrotron X-Ray tomography is used to investigate the mechanism of suppressing shuttle effect by monitoring the morphological evolution of electrodes interface. This work provides an insight into the development of functional RM and in situ protection strategies for Li anodes in Li-O 2 batteries.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Yajun Zhao,Ke Meng,Teng Luo,Mengxu Chen,Shuai Niu,Cong Lin,Xianjun Xing,QinChun Yang,Xianghua Kong,Dawei Zhang,Hao Luo
The significant challenge faced by Li–O 2 batteries (LOBs) lies in their slow oxygen reduction and evolution kinetics, which greatly necessitates the development of highly active catalysts. Herein, we report a high-performance oxygen cathode (RuCo-NC) that is achieved by uniformly dispersing the nanoalloy of noble metal Ru and transition metal Co on the three-dimensional (3D) nanoporous carbon. Density functional theory (DFT) calculations reveal a prominent electron transfer process between Ru and Co, along with a substantial abundance of electron transfer sites on RuCo-NC. These characteristics contribute to a strong positive equilibrium effect on the formation and decomposition of Li 2 O 2 , which is crucial for LOBs. Furthermore, the calculated Gibbs free energy change during the oxygen reduction and evolution processes indicates that RuCo-NC exhibits the smallest overpotential compared to single metal catalysts . As a result, this RuCo-NC cathode enables the resulting LOB with a larger discharge specific capacity, lower overpotential for efficient oxygen reduction and evolution, and excellent cycling stability. This work introduces an effective method for fabricating nanoalloy catalysts with enhanced efficiency, promising advancements in energy applications .
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Zejia Wu,Jiashu Yuan,Hui Wang,Zaifa Pan,Jie Gao,Yonggao Xia
With the wide application of ternary lithium-ion batteries, the increased usage of batteries has resulted in a corresponding rise in the amount of discarded batteries. Here, we propose an efficient and prioritized lithium extraction process with a low environmental impact for the recovery of valuable metal components from spent LiNi0.5Co0.2Mn0.3O2 cathode materials. SO2 calcination–water leaching was used to recover Li, while H2SO4 acid leaching facilitated the recovery of Ni, Co, and Mn, yielding a precursor solution for the treatment of discarded NCM batteries. The effects of calcination temperature, calcination time, water leaching time, water leaching liquid–solid ratio, different battery ratios, acid leaching time, acid leaching liquid–solid ratio, and acid leaching temperature were optimized. The acid leaching process was controlled by surface chemical reactions through kinetic analysis. Under optimal conditions, Li was converted to soluble Li2SO4, achieving an impressive leaching rate of 99.7%. Ni, CO, and Mn were converted to their respective oxides. Furthermore, it was demonstrated that the formation of Li2Mn(SO4)2 from Mn with Li during calcination enhances the leaching efficiency across different battery composition ratios. The activation energies of Ni, Co, and Mn during the acid leaching process were determined by kinetic calculations, yielding values of 130.19, 133.05, and 134.09 kJ mol–1, respectively. This study provides a novel method for recycling spent NCM cathode materials.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Xiaoping Fan,Youguo Huang,Hongqiang Wang,Fenghua Zheng,Chunlei Tan,Yu Li,Xifei Lu,Zhaoling Ma,Qingyu Li
Defect engineering has been an efficient means to govern the electrocatalytic performances of oxygen electrode in Li-O 2 batteries. Herein, we introduce N atoms into MoS 2 for manufacturing sulfur vacancies to improve the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) kinetics of rechargeable Li-O 2 batteries. The obtained results show that N doping opened the crystal distance space of N-MoS 2 , reduced the charge transfer resistance and simultaneously induces Mo-N bonds and a large number of sulfur vacancies. The assembled Li-O 2 batteries with N-MoS 2 as the cathode electrocatalyst deliver discharge specific capacity of 5205.5 mAh g −1 at the current density of 100 mA g −1 , which is much higher than the MoS 2 (2600.3 mAh g −1 ). It also shows excellent cyclic performance with 224 cycles at the current density of 200 mA g −1 within a capacity limitation of 1000 mAh g −1 . Overall, the as-developed N-MoS 2 could be regarded as a promising cathode electrocatalyst for Li-O 2 batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
STAR Protocols
·
2023
·
IF 0
Yuejiao Li,Lisha Wu,Yajun Ding,Zhong-Shuai Wu
Summary The commercial mass production of bifunctional oxygen catalysts with high activity and stability is critical for constructing high-performance lithium-oxygen (Li-O 2 ) batteries, but remains challenging. Herein, we describe a protocol for the scalable fabrication of a 2D bifunctional electrocatalyst of Pt/RuO 2 /graphene by spatial confinement strategy and elaborately evaluate its oxygen reduction/evolution reactions for advanced Li-O 2 batteries. We then detail the synthesis steps for preparing materials followed by assembly and evaluation of the three-electrode systems and coin-type Li-O 2 batteries. For complete details on the use and execution of this protocol, please refer to Li et al. (2023). 1
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Zhiqian Hou,Shan Feng,Peng Hei,Tingshuai Yang,Zhiqun Ran,Ruixin Zheng,Xin Liao,Chaozhu Shu,Jianping Long
The development of high-efficiency oxygen electrode with well structural and chemical stability is critical to boost the rapid development of lithium-oxygen (Li-O 2 ) batteries. Which are reckoned as a potent contender for next-generation energy storage devices due to their ultra-high theoretical energy density . Here, a flower-like three-dimensional self-standing ZnCo 2 S 4 -based electrode without an addition of binders are fabricated and employing as positive electrode for Li-O 2 batteries. The bifunctional catalytic activity of flower-like ZnCo 2 S 4 is conducive to improving the hysteresis kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Representative ultrathin petal edge exposes adequate active sites and provides a sufficient contact interface between Li 2 O 2 and positive electrode, which are essential for reducing the charge overpotential during OER. Compared with the control electrodes, the flower-like ZnCo 2 S 4 @Ni-based Li-O 2 battery shows decreased overpotential (0.78 V) and improved cycle stability (over 500 cycles).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Ting Li,Xiaomeng Wang,Yanmei Chen,Jianru Liang,Lixiang Zhou
Heterogeneous Fenton has become a promising economical and environmentally-friendly method for water treatment, however, the production of abundant radical resources (e.g., O 2 − , OH) are oftentimes limited by finite Fe 2+ species to activate H 2 O 2 . Therefore, development of a new iron-bearing solid modified with diverse functional groups for generating a large of radicals in heterogeneous Fenton is significance. Here, we constructed a Fe 3 O 4 -modified schwertmannite (Fe 3 O 4 /Sch) catalyst to activate H 2 O 2 , SO 4 2− and O 2 to produce three kinds of radicals in heterogeneous Fenton reaction. Specifically, Fe 3 O 4 /Sch catalyst was synthesized to improve its surface properties such as the contents of surface Fe 2+ species as H 2 O 2 or O 2 activators to produce OH or O 2 − , the SO 4 2− of Sch surface as SO 4 − precursor, and electron transfer between Fe 3+ and Fe 2+ . Degradation rate of ciprofloxacin (CIP) for 6 min was up to 97% in Fe 3 O 4 /Sch-H 2 O 2 system, which was higher than that in Sch-H 2 O 2 or Fe 3 O 4 -H 2 O 2 . After four successive cyclic experiments, degradation rate of CIP was still achieved 97% within 10 min in Fe 3 O 4 /Sch-H 2 O 2 system. The formation pathways of the relevant active radicals and the degradation pathways of CIP were also proposed by theoretically calculated and LC-MS data. This finding has not only developed an efficient heterogeneous Fenton catalyst, but also given a new idea of SO 4 − generation by modified iron oxyhydroxysulfate mineral for application of heterogeneous Fenton technology.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）