keyword
https://read.qxmd.com/read/38533760/spontaneous-molecule-aggregation-for-nearly-single-ion-conducting-sol-electrolyte-to-advanced-aqueous-zinc-metal-batteries-the-case-of-tetraphenylporphyrin
#1
JOURNAL ARTICLE
Jingjing Dong, Long Su, Huili Peng, Dongdong Wang, Hanwen Zong, Gulian Wang, Jian Yang
Zn metal as a promising anode of aqueous batteries faces the severe challenges from dendrite growth and side reactions. Here, tetraphenylporphyrin tetrasulfonic acid (TPPS) is explored as an electrolyte additive for advanced Zn anodes. It is interesting to note that TPPS spontaneously assembles into unique aggregates. As they adsorb on the Zn anode, the aggregates enhance the resistance to electrolyte percolation and dendrite growth compared to the reported single molecules. Meanwhile, TPPS facilitates anion association in the solvation sheath of Zn2+, and boosts the transference number of Zn2+ up to 0...
March 27, 2024: Angewandte Chemie
https://read.qxmd.com/read/38530141/mn-2-mediated-modulation-of-pfago-activity-for-biosensing
#2
JOURNAL ARTICLE
Ruijie Fu, Jinjie Hou, Zexiang Wang, Yunlei Xianyu
Argonaute (Ago) as a powerful enzyme has provided new insights into biosensing due to its programmability, high sensitivity, and user-friendly operation. However, current strategies mainly rely on phosphorylated guide DNA to modulate the cleavage activity of Ago, which are limited in versatility and simplicity. Herein, we reported Mn2+ -enhanced cleavage activity of Ago and employed Mn ions with variable valence to regulate the activity of Pyrococcus furiosus Ago (PfAgo) for biosensing applications. The conversion of Mn ions with different valence states through MnO2 nanoflowers enables the sensitive detection of ascorbic acid, alkaline phosphatase, and arsenic with limits of detection of 2...
March 26, 2024: Advanced Healthcare Materials
https://read.qxmd.com/read/38522159/tumor-microenvironment-activated-mussel-inspired-hollow-mesoporous-nanotheranostic-for-enhanced-synergistic-photodynamic-chemodynamic-therapy
#3
JOURNAL ARTICLE
Hao Tian Yan, Moon-Sun Jang, Changling Liu, Qiang Fu, Bo Wang, Yan Fu, Jung Hee Lee, Hong Yu Yang
Anti-tumor therapies reliant on reactive oxygen species (ROS) as primary therapeutic agents face challenges due to a limited oxygen substrate. Photodynamic therapy (PDT) is particularly hindered by inherent hypoxia, while chemodynamic therapy (CDT) encounters obstacles from insufficient endogenous hydrogen peroxide (H2 O2 ) levels. In this study, we engineered biodegradable tumor microenvironment (TME)-activated hollow mesoporous MnO2 -based nanotheranostic agents, designated as HAMnO2 A. This construct entails loading artemisinin (ART) into the cavity and surface modification with a mussel-inspired polymer ligand, namely hyaluronic acid-linked poly(ethylene glycol)-diethylenetriamine-conjugated (3,4-dihydroxyphenyl) acetic acid, and the photosensitizer Chlorin e6 (mPEG-HA-Dien-(Dhpa/Ce6)), facilitating dual-modal imaging-guided PDT/CDT synergistic therapy...
March 23, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38522026/electrochemical-failure-mechanism-of-%C3%AE-mno-2-in-zinc-ion-batteries-induced-by-irreversible-layered-to-spinel-phase-transition
#4
JOURNAL ARTICLE
Chunyu Zhao, Mengqi Wu, Wencheng Lu, Yingjie Cheng, Xiaoya Zhang, Ismael Saadoune, Ruqian Lian, Yizhan Wang, Yingjin Wei
Phase transitions of Mn-based cathode materials associated with the charge and discharge process play a crucial role on the rate capability and cycle life of zinc ion batteries. Herein, a microscopic electrochemical failure mechanism of Zn-MnO2 batteries during the phase transitions from δ-MnO2 to λ-ZnMn2 O4 is presented via systematic first-principle investigation. The initial insertion of Zn2+ intensifies the rearrangement of Mn. This is completed by the electrostatic repulsion and co-migration between guest and host ions, leading to the formation of λ-ZnMn2 O4 ...
March 24, 2024: Small
https://read.qxmd.com/read/38520070/in-situ-spontaneous-electropolymerization-enables-robust-hydrogel-electrolyte-interfaces-in-aqueous-batteries
#5
JOURNAL ARTICLE
Liangyuan Chen, Tuo Xiao, Jin-Lin Yang, Yipu Liu, Jinglin Xian, Kang Liu, Yan Zhao, Hong Jin Fan, Peihua Yang
Hydrogels hold great promise as electrolytes for emerging aqueous batteries, for which establishing a robust electrode-hydrogel interface is crucial for mitigating side reactions. Conventional hydrogel electrolytes fabricated by ex-situ polymerization through either thermal stimulation or photo exposure cannot ensure complete interfacial contact with electrodes. Herein, we introduce an in-situ electropolymerization approach for constructing hydrogel electrolytes. The hydrogel is spontaneously generated during the initial cycling of the battery, eliminating the need of additional initiators for polymerization...
March 22, 2024: Angewandte Chemie
https://read.qxmd.com/read/38518383/manganese-dioxide-nanoparticles-provoke-inflammatory-damage-in-bv2-microglial-cells-via-increasing-reactive-oxygen-species-to-activate-the-p38-mapk-pathway
#6
JOURNAL ARTICLE
Xingchang Sun, Xin Qin, Gaofeng Liang, Xuhong Chang, Huike Zhu, Jiahao Zhang, Dan Zhang, Yingbiao Sun, Sanwei Feng
With the widespread use of manganese dioxide nanoparticles (nano MnO2 ), health hazards have also emerged. The inflammatory damage of brain tissues could result from nano MnO2 , in which the underlying mechanism is still unclear. During this study, we aimed to investigate the role of ROS-mediated p38 MAPK pathway in nano MnO2 -induced inflammatory response in BV2 microglial cells. The inflammatory injury model was established by treating BV2 cells with 2.5, 5.0, and 10.0 μg/mL nano MnO2 suspensions for 12 h...
March 22, 2024: Toxicology and Industrial Health
https://read.qxmd.com/read/38516081/-in-situ-nafion-nanofilm-oriented-002-zn-electrodeposition-for-long-term-zinc-ion-batteries
#7
JOURNAL ARTICLE
Da Zhang, Ziyang Song, Ling Miao, Yaokang Lv, Lihua Gan, Mingxian Liu
Dendrite growth and parasitic reactions of a Zn metal anode in aqueous media hinder the development of up-and-coming Zn-ion batteries. Optimizing the crystal growth after Zn nucleation is promising to enable stable cyclic performance of the anode, but directly regulating specific crystal plane growth for homogenized Zn electrodeposition remains highly challenging. Herein, a perfluoropolymer (Nafion) is introduced into an aqueous electrolyte to activate a thermodynamically ultrastable Zn/electrolyte interface for long-term Zn-ion batteries...
March 20, 2024: Chemical Science
https://read.qxmd.com/read/38513349/spontaneous-multi-scale-supramolecular-assembly-driven-by-noncovalent-interactions-coupled-with-the-continuous-marangoni-effect
#8
JOURNAL ARTICLE
Ce Shi, Xinghai Shen
Reported herein is the multi-scale supramolecular assembly (MSSA) process along with redox reactions driven by supramolecular interactions coupled with the spontaneous Marangoni effect in ionic liquid (IL)-based extraction systems. The black powder, the single sphere with a black exterior, and the single colorless sphere were formed step by step at the interface when an aqueous solution of KMnO4 was mixed with the IL phase 1-(2-hydroxyethyl)-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (C2 OHmimNTf2 ) bearing octyl(phenyl)- N , N -diisobutylcarbamoylmethylphosphine oxide (CMPO)...
March 21, 2024: Langmuir: the ACS Journal of Surfaces and Colloids
https://read.qxmd.com/read/38512701/g-quadruplex-dna-based-colorimetric-biosensor-for-the-ultrasensitive-visual-detection-of-strontium-ions-using-mno-2-nanorods-as-oxidase-mimetics
#9
JOURNAL ARTICLE
Yiting Chen, Chunhui Gong, Kaiwei Chen, Ziwei Wang, Manli He, Peng Wang, Kai Chen, Yan Jiao, Yi Yang
Strontium-90 (90 Sr) is a major radioactive component that has attracted great attention, but its detection remains challenging since there are no specific energy rays indicative of its presence. Herein, a biosensor that is capable of rapidly detecting Sr2+ ions is demonstrated. Simple colorimetric method for sensitive detection of Sr2+ with the help of single-stranded DNA was developed by preparing MnO2 nanorods as oxidase mimic catalysis 3,3',5,5'-tetramethylbenzidine (TMB). Under weakly acidic conditions, MnO2 exhibited a strong oxidase-mimicking activity to oxidize colorless TMB into blue oxidation products (oxTMB) with discernible absorbance signals...
March 21, 2024: Mikrochimica Acta
https://read.qxmd.com/read/38511585/in-situ-constructing-metal-organic-complex-interface-layer-using-biomolecule-enabling-stabilize-zn-anode
#10
JOURNAL ARTICLE
Zaifang Yuan, Kaiyuan Zhan, Di Li, Yujuan Pu, Youkui Zhang, Xuzhong Zeng, Xiaoyu Luo, Yunhuai Zhang, Xueming Li, Zidong Wei
Aqueous zinc-ion batteries (ZIBs) are considered as a promising candidate for next-generation large-scale energy storage due to their high safety, low cost, and eco-friendliness. Unfortunately, commercialization of ZIBs is severely hindered owing to rampant dendrite growth and detrimental side reactions on the Zn anode. Herein, inspired by the metal-organic complex interphase strategy, the authors apply adenosine triphosphate (ATP) to in situ construct a multifunctional film on the metal Zn surface (marked as ATP@Zn) by a facile etching method...
March 21, 2024: Small
https://read.qxmd.com/read/38511540/limiting-interfacial-free-water-and-proton-concentration-by-hydrogel-electrolytes-for-stable-moo-3-anode-in-a-proton-battery
#11
JOURNAL ARTICLE
Zili Qin, Xilong Li, Qi Dong, Kaiwen Qi, Shiyuan Chen, Yongchun Zhu
Aqueous rechargeable proton batteries are attractive due to the small ionic radius, light mass, and ultrafast diffusion kinetics of proton as charge carriers. However, the commonly used acidic electrolyte is usually very corrosive to the electrode material, which seriously affects the cycle life of the battery. Here, it is proposed that decreasing water activity and limiting proton concentration can effectively prevent side reactions of the MoO3 anode such as corrosion and hydrogen precipitation by using a lean-water hydrogel electrolyte...
March 21, 2024: Small
https://read.qxmd.com/read/38506599/oxygen-vacancy-rich-manganese-nanoflowers-as-ferroptosis-inducers-for-tumor-radiotherapy
#12
JOURNAL ARTICLE
Ying Liu, Fen Pi, Lizhen He, Fang Yang, Tianfeng Chen
The combination of ferroptosis and innovative tumor therapy methods offers another promising answer to the problem of tumors. In order to generate effective ferroptosis in tumor cells, iron-based nanomaterials are commonly utilized to introduce foreign iron as a trigger for ferroptosis. However, this usually necessitates the injection of larger doses of iron into the body. These exogenous iron increases are likely to create concealed concerns for symptoms such as liver damage and allergy. Herein, an iron-free radiosensitizer is introduced, oxygen-vacancy-rich MnO2 nanoflowers (ovs-MnO2 ), that promotes ferroptosis and modifies the tumor microenvironment to assist radiotherapy...
March 20, 2024: Small
https://read.qxmd.com/read/38499424/flexible-microfluidic-colorimetric-detection-chip-integrated-with-abts-%C3%A2-and-co-mno-2-nanozyme-catalyzed-tmb-reaction-systems-for-bio-enzyme-free-detection-of-sweat-uric-acid
#13
JOURNAL ARTICLE
Fang Li, Jianming Jiang, Nuotong Shen, Hao Peng, Yi Luo, Nannan Li, Liyang Huang, Yuyang Lu, Lifu Liu, Bing Li, Jianbo He
BACKGROUND: The development of wearable detection devices that can achieve noninvasive, on-site and real-time monitoring of sweat metabolites is of great demand and practical significance for point-of-care testing and healthcare monitoring. Monitoring uric acid (UA) content in sweat provides a simple and promising way to reduce the risk of gout and hyperuricemia. Traditional bioenzyme based UA assays suffer from high cost, poor stability, inconvenience for storage and easy deactivation of bioenzymes...
April 22, 2024: Analytica Chimica Acta
https://read.qxmd.com/read/38499419/three-dimensional-dna-biomimetic-networks-b-3d-net-based-ratiometric-fluorescence-platform-for-cancer-related-gene-biosensing
#14
JOURNAL ARTICLE
Chao Yao, Guiqun Zhang, Hongling Tao, Yulong Li, Rong Hu, Yunhui Yang
Efficient detection of cancer-related nucleic acids is pivotal for early cancer diagnosis. This study introduces a target induced three-dimensional DNA biomimetic networks (B-3D Net)-based ratiometric fluorescence platform using manganese dioxide nanosheets (MnO2 NS)/o-phenylenediamine in combination with hybridization chain reaction to detect cancer-related genes (p53 gene). The incorporation of multiple signals within the B-3D networks can significantly enhance catalytic activity and amplify the output signals, enabling a high sensitivity...
April 22, 2024: Analytica Chimica Acta
https://read.qxmd.com/read/38496350/precursor-and-waste-free-synthesis-of-spark-ablated-nanoparticles-with-enhanced-photocatalytic-activity-and-stability-towards-airborne-organic-pollutant-degradation
#15
JOURNAL ARTICLE
Sarka Drdova, Min Gao, Olga Sambalova, Robin Pauer, Zhouping Zhou, Sofia Dimitriadou, Andreas Schmidt-Ott, Jing Wang
Photocatalyst synthesis typically involves multiple steps, expensive precursors, and solvents. In contrast, spark ablation offers a simple process of electrical discharges in a gap between two electrodes made from a desirable material. This enables a precursor- and waste-free generation of pure metal oxide nanoparticles or mixtures of various compositions. This study presents a two-step method for the production of photocatalytic filters with deposited airborne MnO x , TiO2 , and ZnO nanoparticles using spark ablation and calcination processes...
March 14, 2024: Environmental Science. Nano
https://read.qxmd.com/read/38494016/turning-harmful-mn-2-to-treasure-in-situ-formed-%C3%AE%C2%B5-mno-2-for-removing-heavy-metals-from-acid-mine-drainage
#16
JOURNAL ARTICLE
Yaozhong Wang, Yuebei Yang, Yuting Zhou, Feng Jiang, Yanjie Zheng, Wei Tan, Xiaoyun Yi, Zhi Dang
Acid mine drainage (AMD) contains high concentrations of heavy metals, causing serious environmental pollution. Current neutralization techniques fail to recover and utilize valuable heavy metals, and generate large quantities of hazardous sludge. Manganese (Mn) is generally present at high levels in AMD. Therefore, this paper proposed a technology to recover Mn from AMD, by adding KMnO4 to converting Mn into ε-MnO2 . Ultra-Violet C (UVC) was used to photolyze the residual KMnO4 . The study then evaluated the processes and mechanisms involved in the technology...
March 15, 2024: Science of the Total Environment
https://read.qxmd.com/read/38493629/mechanistic-insights-into-manganese-oxide-impacting-the-oxidation-and-transport-of-cr-iii-immobilized-by-nano-zero-valent-charged-ion-particles-in-water-saturated-porous-media
#17
JOURNAL ARTICLE
Wu Sun, Nan Xu, Wenxin Jiang, Gongbi Cheng
The presence of manganese oxide (MnO2 ) could influence the stability of green-synthesized nano-zero valent iron (nZVI@GT) associated with trivalent chromium (Cr(III)) after its excess application in the in situ remediation of hexachromium (Cr(VI)) contaminated soil. The research findings revealed that the co-transport of the remaining nZVI@GT with Cr(III) was substantially inhibited by high δ-MnO2 concentrations due to the formation of hetero-aggregates between nZVI@GT and δ-MnO2 , resulting in an increased irreversible attachment parameter at second-site in a two-site kinetic attachment model...
March 16, 2024: Journal of Hazardous Materials
https://read.qxmd.com/read/38493622/a-carbon-dots-mno-2-nanosheet-based-turn-on-pseudochemodosimeter-as-low-cost-probe-for-selective-detection-of-hazardous-mercury-ion-contaminations-in-water
#18
JOURNAL ARTICLE
Ankit Thakuri, Akhil A Bhosle, Sharanabasava D Hiremath, Mainak Banerjee, Amrita Chatterjee
Mercury is a highly hazardous element due to its profound toxicity and wide abundance in the environment. Despite the availability of various fluorimetric detection tools for Hg2+ , including organic fluorophores and aptasensors, they often suffer from shortcomings like the utilization of expensive chemicals and toxic organic solvents, multi-step synthesis, sometimes with poor selectivity and low sensitivity. Whereas, biomass-derived fluorophores, such as carbon dots (CDs), present themselves as cost-effective and environmentally benign alternatives that exhibit comparable efficacy...
March 10, 2024: Journal of Hazardous Materials
https://read.qxmd.com/read/38492838/boosted-charge-separation-via-ce-2-s-3-over-dual-z-scheme-zno-ce-2-s-3-mno-2-core-double-shell-nanocomposite-for-the-degradation-of-diverse-dye-pollutants
#19
JOURNAL ARTICLE
Tauseef Munawar, Taghrid S Alomar, Chang-Feng Yan, Saman Fatima, Faisal Mukhtar, Muhammad Shahid Nadeem, Najla AlMasoud, Shoukat Alim Khan, Muammer Koc, Yahya Zakaria, Faisal Iqbal
Herein, core double-shell direct dual Z-scheme ZnO-Ce2 S3 -MnO2 nanocomposite was synthesized via a hydrothermal route along with pure ZnO, Ce2 S3 , MnO2 , and characterized by numerous characterization tools for application in synthetic dyes degradation. The XRD, Raman, and FTIR analyses have confirmed the nanocomposite formation. TEM images exhibited the core double-shell morphology with an average particle diameter of 81 nm and stacking of ZnO, Ce2 S3 , and MnO2 . EDX confirmed the existence of desired elements in the grown composition...
March 14, 2024: Environmental Research
https://read.qxmd.com/read/38488721/doping-regulation-stabilizing-%C3%AE-mno-2-cathode-for-high-performance-aqueous-aluminium-ion-batteries
#20
JOURNAL ARTICLE
Shuimei Chen, Yueqi Kong, Cheng Tang, Nashaat Ahmed Gadelhak, Ashok Kumar Nanjundan, Aijun Du, Chengzhong Yu, Xiaodan Huang
δ-MnO2 is a promising cathode material for aqueous aluminium-ion batteries (AAIBs) for its layered crystalline structure with large interlayer spacing. However, the excellent Al ion storage performance of δ-MnO2 cathode remains elusive due to the frustrating structural collapse during the intercalation of high ionic potential Al ion species. Here, it is discovered that introducing heterogeneous metal dopants with high bond dissociation energy when bonded to oxygen can significantly reinforce the structural stability of δ-MnO2 frameworks...
March 15, 2024: Small
keyword
keyword
160578
1
2
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.