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1. Thermodynamic Barrier to Nucleation for Manganese Oxide Nanoparticles Synthesized by High-Temperature Gas-to-Particle Conversion

Author:
Dasappa, Shruthi; Camacho, Joaquin
Source:
Energy & fuels 2021 v.35 no.2 pp. 1874-1884
ISSN:
1520-5029
Subject:
manganese; manganese monoxide,   etc   ; energy; particle size; phase transition; temperature; thermodynamics;     Show all 7 Subjects
Abstract:
... A complementary experimental and modeling study is reported here for nucleation of manganese oxide nanoparticles in premixed stagnation flames. The current synthesis occurs at relatively high flame temperature and low precursor loading. Thermodynamic analysis based on the postulated nucleation process, Mn(g) + O₂(g) → MnO(s), is carried out to quantify precursor supersaturation and potential impac ...
DOI:
10.1021/acs.energyfuels.0c03662

2. Heteroleptic manganese compounds as potential precursors for manganese based thin films and nanomaterials

Author:
Lee, Sunju; Lee, Ga Yeon; Kim, Chang Gyoun; Chung, Taek-Mo; Park, Bo Keun
Source:
RSC advances 2020 v.10 no.50 pp. 29659-29667
ISSN:
2046-2069
Subject:
manganese; manganese monoxide,   etc   ; liquids; thermogravimetry;     Show all 4 Subjects
Abstract:
... Heteroleptic manganese compounds, [Mn(tmhd)(TMEDA)Cl]₂ (1), [Mn(tmhd)(dmamp)]₂ (2), Mn₂(tmhd)₂(edpa)₂(μ-THF) (3), [Mn(dmampea)(NEt₂)]₂ (4), and Mn(dmampea)(ⁱPr-MeAMD) (5), were synthesized and characterized. Compound 5 was a volatile liquid. Structural analysis revealed that 1–4 were dimers. Compounds 1 and 3, 2, and 4 had distorted octahedral, distorted trigonal-bipyramidal, and distorted tetrahe ...
DOI:
10.1039/d0ra05225f

3. Formation and influence factors of halonitromethanes in chlorination of nitro-aromatic compounds

Author:
Wang, Junjie; Li, Zhigang; Hu, Shaoyang; Ma, Jian; Gong, Tingting; Xian, Qiming
Source:
Chemosphere 2021 v.278 pp. 130497
ISSN:
0045-6535
Subject:
manganese,   etc   ; chlorination; chloropicrin; disinfection; nitrites; pH;     Show all 6 Subjects
Abstract:
... Halonitromethanes (HNMs), typical nitrogenous disinfection byproducts generated during disinfection of chlorination and chloramination, are widely detected in drinking water. This study investigated the formation of two dominant HNMs, trichloronitromethane (TCNM) and dichloronitromethane (DCNM) during chlorination/chloramination of ten nitro-aromatic compounds (NACs), including six aromatic mono-n ...
DOI:
10.1016/j.chemosphere.2021.130497

4. Can ultrafiltration singly treat the iron- and manganese-containing groundwater?

Author:
Tang, Xiaobin; Zhu, Xuewu; Huang, Kaijie; Wang, Jinlong; Guo, Yuanqing; Xie, Binghan; Li, Guibai; Liang, Heng
Source:
Journal of hazardous materials 2021 v.409 pp. 124983
ISSN:
0304-3894
Subject:
manganese,   etc   ; groundwater; oxidation; polymers; temperature; ultrafiltration;     Show all 6 Subjects
Abstract:
... The presence of Fe²⁺ and Mn²⁺ would cause severe ultrafiltration (UF) membrane fouling and limited its extensive application in treating the groundwater. A pilot-scale gravity-driven membrane (GDM) process which coupled the dual roles of biocake layer and UF membrane was introduced to treat the groundwater under high Mn²⁺concentrations and low temperature conditions. The results indicated that flu ...
DOI:
10.1016/j.jhazmat.2020.124983

5. Orderly aligned manganese-based nanotube arrays with controllable secondary structures

Author:
Huang, Xiaoyan; Liang, Zhuoxi; Wen, Jiqiu; Liu, Yong; Taallah, Ayoub; Yao, Xin; Zhang, Zhiyou; Yu, Tian; Zhang, Sijie
Source:
RSC advances 2021 v.11 no.14 pp. 8277-8281
ISSN:
2046-2069
Subject:
manganese,   etc   ; aqueous solutions; electroplating; foams; nanopores; nanotubes;     Show all 6 Subjects
Abstract:
... By combining a hard template with a dynamic negative template, orderly aligned micrometer-length manganese nanotubes (Mn-NTs) decorated with nanopores on their walls as the secondary structure are successfully grown by electrodeposition in aqueous solution. These nanopores were characterized and analyzed statistically. It is found that these nanopores evolve along the growth direction of the Mn-NT ...
DOI:
10.1039/d0ra10210e

6. Hazard-free treatment of electrolytic manganese residue and recovery of manganese using low temperature roasting-water washing process

Author:
He, Shichao; Wilson, Benjamin P.; Lundström, Mari; Liu, Zhihong
Source:
Journal of hazardous materials 2021 v.402 pp. 123561
ISSN:
0304-3894
Subject:
manganese,   etc   ; phase transition; temperature; thermodynamics; toxicity; wastewater;     Show all 6 Subjects
Abstract:
... A combined low-temperature-roasting and water-washing process is investigated as a hazard-free method to treat electrolytic manganese residue (EMR) and recover manganese. In this study, the phase transformation characteristics and a thermodynamics analysis of the low temperature roasting process of EMR are evaluated. In addition, the effects of temperature and time on the phase transformation of E ...
DOI:
10.1016/j.jhazmat.2020.123561

7. Polymer-coated manganese fertilizer and its combination with lime reduces cadmium accumulation in brown rice (Oryza sativa L.)

Author:
Huang, Gaoxiang; Ding, Changfeng; Guo, Naijia; Ding, Mingjun; Zhang, Hua; Kamran, Muhammad; Zhou, Zhigao; Zhang, Taolin; Wang, Xingxiang
Source:
Journal of hazardous materials 2021 v.415 pp. 125597
ISSN:
0304-3894
Subject:
manganese; manganese fertilizers,   etc   ; Oryza sativa; brown rice; cadmium; gene expression; polyacrylic acid; soil pH; transportation;     Show all 9 Subjects
Abstract:
... Manganese (Mn) has the potential to reduce cadmium (Cd) uptake by rice; however, the efficiency depends on its soil availability. Therefore, this study designed a slow-release Mn fertilizer by employing a polyacrylate coating. Pot trials were conducted to study the effects of coated-Mn and uncoated-Mn alone or in combination with lime on the dynamics of soil dissolved-Mn and available Cd, and the ...
DOI:
10.1016/j.jhazmat.2021.125597

8. A novel process on the recovery of zinc and manganese from spent alkaline and zinc-carbon batteries

Author:
Hu, Xianfeng; Robles, Astrid; Vikström, Tommy; Väänänen, Pekka; Zackrisson, Mats; Ye, Guozhu
Source:
Journal of hazardous materials 2021 v.411 pp. 124928
ISSN:
0304-3894
Subject:
manganese; manganese monoxide,   etc   ; alloys; circular economy; fertilizer application; furnaces; phosphorus content; trace element fertilizers; zinc;     Show all 9 Subjects
Abstract:
... Spent alkaline and zinc-carbon batteries contain valuable elements (notably, Zn and Mn), which need to be recovered to keep a circular economy. In this study, the black mass materials from those spent batteries are pyrometallurgically treated via a series of process steps in a pilot-scale KALDO furnace to produce an Mn–Zn product, a ZnO product, and an MnO (manganese monoxide) product, toward appl ...
DOI:
10.1016/j.jhazmat.2020.124928

9. Activation of persulfate by MnOOH: Degradation of organic compounds by nonradical mechanism

Author:
Xu, Xiaomin; Zhang, Yongqing; Zhou, Shaoqi; Huang, Renfeng; Huang, Shaobin; Kuang, Hainan; Zeng, Xianlin; Zhao, Shuaifei
Source:
Chemosphere 2021 v.272 pp. 129629
ISSN:
0045-6535
Subject:
manganese; manganese monoxide,   etc   ; active ingredients; catalysts; oxidation; pH; wastewater; wastewater treatment;     Show all 8 Subjects
Abstract:
... Advanced oxidation processes (AOPs) based on persulfate (PS) has attracted great attention due to its high efficiency for degradation of organic pollutants. Manganese-based materials have been considered as the desirable catalysts for in-situ chemical oxidation since they are abundant in the earth’s crust and environment-friendly. In this study, manganese oxyhydroxide (MnOOH) was used as an activa ...
DOI:
10.1016/j.chemosphere.2021.129629

10. A green, efficient, closed-loop direct regeneration technology for reconstructing of the LiNi0.5Co0.2Mn0.3O2 cathode material from spent lithium-ion batteries

Author:
Fan, Xiaoping; Tan, Chunlei; Li, Yu; Chen, Zhiqiang; Li, Yahao; Huang, Youguo; Pan, Qichang; Zheng, Fenghua; Wang, Hongqiang; Li, Qingyu
Source:
Journal of hazardous materials 2021 v.410 pp. 124610
ISSN:
0304-3894
Subject:
manganese; manganese monoxide,   etc   ; cathodes; cobalt; cobalt oxide; electrochemistry; heat treatment; industrialization; lithium; lithium batteries; nickel; pollution;     Show all 12 Subjects
Abstract:
... Lithium nickel manganese cobalt oxide in the spent lithium ion batteries (LIBs) contains a lot of lithium, nickel, cobalt and manganese. However, how to effectively recover these valuable metals under the premise of reducing environmental pollution is still a challenge. In this work, a green, efficient, closed-loop direct regeneration technology is proposed to reconstruct LiNi₀.₅Co₀.₂Mn₀.₃O₂ (NCM5 ...
DOI:
10.1016/j.jhazmat.2020.124610

11. Manganese supported on controlled dealumination Y-zeolite for ozone catalytic oxidation of low concentration toluene at low temperature

Author:
Shao, Qi; Dong, Hao; Zhang, Jian; Xu, Bowen; Wu, Yuhao; Long, Chao
Source:
Chemosphere 2021 v.271 pp. 129604
ISSN:
0045-6535
Subject:
manganese; manganese monoxide,   etc   ; catalysts; catalytic activity; humidity; nitric acid; oxidation; oxygen; ozone; steam; temperature; toluene; zeolites;     Show all 13 Subjects
Abstract:
... Low-temperature catalytic degradation of VOCs with ozone has received widespread attention recently. In this work, a combination method of steam and nitric acid was used to control the dealuminization of Y zeolite, and then manganese oxide was loaded on the Y zeolite by impregnation method. It was found that MnOₓ was highly dispersed in the dealumination zeolite, and the adsorbed oxygens were more ...
DOI:
10.1016/j.chemosphere.2021.129604

12. Effect of the valence state of Mn in MnOₓ/Ti₄O₇ composites on the catalytic performance for oxygen reduction reaction and oxygen evolution reaction

Author:
Bai, Fan; Xu, Lincheng; Wang, Daode; An, Li; Hao, Zhanzhong; Li, Fan
Source:
RSC advances 2021 v.11 no.3 pp. 1524-1530
ISSN:
2046-2069
Subject:
manganese; manganese monoxide,   etc   ; batteries; catalytic activity; durability; electric potential difference; electrochemistry; hot water treatment; oxygen production;     Show all 9 Subjects
Abstract:
... Manganese oxide composites with mixed valence states were prepared through the hydrothermal method by compositing with Ti₄O₇ and calcining at different temperatures, and their ORR and OER catalytic performance were investigated. The prepared catalysts were characterized by XRD, SEM-EDS, HRTEM-EDS, and XPS methods to analyse their phase constitution, morphology feature, and surface composition. The ...
DOI:
10.1039/d0ra08575h

13. Enhanced darkening effect from the interaction of MnO2 and oxygen on the component evolution of amino-phenolic humic-like substances

Author:
Zhang, Yingchao; Yue, Dongbei; Fang, Ding; Dong, Xinwei; Li, Wenlong
Source:
Chemosphere 2021 v.263 pp. 127956
ISSN:
0045-6535
Subject:
manganese; manganese dioxide,   etc   ; carbon dioxide; catalysts; evolution; humification; nitrogen; oxygen; polymerization;     Show all 9 Subjects
Abstract:
... Humification is greatly enhanced by metallic oxides in nature, and the related products are critical to various environmental processes. However, little is known about the interaction between metallic oxides and oxygen in promoting the oxidative polymerization of small organic molecules during the humification process. The synthesis of humic-like acids (HLAs) with MnO₂ was performed in the presenc ...
DOI:
10.1016/j.chemosphere.2020.127956

14. Microwave processing of spent coin cells for recycling of metallic values

Author:
Pindar, Sanjay; Dhawan, Nikhil
Source:
Journal of cleaner production 2021 v.280 pp. 124144
ISSN:
0959-6526
Subject:
manganese; manganese dioxide; manganese monoxide,   etc   ; alcohols; carbon; carbonates; cathodes; citric acid; dielectric properties; electronics; energy; leaching; lithium; lithium batteries; microwave treatment; recycling; steel;     Show all 17 Subjects
Abstract:
... Lithium metal batteries are essential energy storage primary batteries in portable electronics. It is necessary to develop an effective recycling method for spent batteries containing valuable Lithium, Manganese, and Carbon values considering resource conservation and environmental concerns. In this study, spent Lithium metal batteries are manually dismantled, followed by Lithium dissolution in di ...
DOI:
10.1016/j.jclepro.2020.124144

15. Cathodic polarization enables SEM illustration of manganese biomineralization in natural biofilms

Author:
Kumar, A. Lakshman; Eashwar, M.; Prabu, V.
Source:
Journal of microbiological methods 2020 v.175 pp. 105991
ISSN:
0167-7012
Subject:
manganese,   etc   ; biofilm; biomineralization; freshwater;     Show all 4 Subjects
Abstract:
... Manganese biomineralization occurred readily on metal surfaces in a natural freshwater environment. SEM demonstration of actual bacterial participation was challenging due to the rapidity of biofilm growth and typical microbe-mineral agglomeration. By optimizing cathodic polarization, we slowed down the process so effectually as to document biomineralization by rod-shaped rather than by filamentou ...
DOI:
10.1016/j.mimet.2020.105991

16. The symmetry principle of antiaromaticity

Author:
Berger, Raphael J. F.; Viel, Alexandre
Source:
Zeitschrift für Naturforschung 2020 v.75 no.4 pp. 327-339
ISSN:
1865-7117
Subject:
manganese,   etc   ; magnetic fields; paramagnetism;     Show all 3 Subjects
Abstract:
... Current definitions of aromaticity are purely phenomenological and relate symmetry, reactive stability and the occurrence of molecular diamagnetic response currents. The antithetical concept of antiaromaticity provides a connection between the contrary properties: structural instability or distortion out of higher symmetry, a small HOMO-LUMO gap, and paramagnetic response currents. We reveal the s ...
DOI:
10.1515/znb-2020-0024

17. Exogenously applied oxalic acid assists in the phytoremediation of Mn by Polygonum pubescens Blume cultivated in three Mn-contaminated soils

Author:
Liu, Kehui; Xu, Jie; Dai, Chenglong; Li, Chunming; Li, Yi; Ma, Jiangming; Yu, Fangming
Source:
Frontiers of environmental science & engineering 2021 v.15 no.5 pp. 86
ISSN:
2095-2201
Subject:
manganese,   etc   ; Persicaria pubescens; malondialdehyde; oxalic acid; phytoremediation; plant growth; China;     Show all 7 Subjects
Abstract:
... The current study evaluated the effects of oxalic acid (OA) application on the growth and Mn phytoremediation efficiency of Polygonum pubescens Blume cultivated in three different manganese (Mn)-contaminated soils sampled from an unexplored area (US), an explored area (ES) and a tailing area (TS) of the Ertang Mn mine, South China. The supplied levels of OA were 0 (control), 1 (low level), 3 (medi ...
DOI:
10.1007/s11783-020-1380-4

18. Alkoxide hydrolysis in-situ constructing robust trimanganese tetraoxide/graphene composite for high-performance lithium storage

Author:
Wu, Liang; Huang, Shaozhuan; Dong, Wenda; Li, Yan; Wang, Zhouhao; Mohamed, Hemdan S.H.; Li, Yu; Su, Bao-Lian
Source:
Journal of colloid and interface science 2021 v.594 pp. 531-539
ISSN:
0021-9797
Subject:
manganese,   etc   ; anodes; electrochemistry; graphene; hydrolysis; lithium; nanocrystals; nanosheets;     Show all 8 Subjects
Abstract:
... Herein we develop a novel and effective alkoxide hydrolysis approach to in-situ construct the trimanganese tetraoxide (Mn₃O₄)/graphene nanostructured composite as high-performance anode material for lithium-ion batteries (LIBs). This is the first report on the synthesis of Mn₃O₄/graphene composite via a facile hydrolysis of the manganese alkoxide (Mn-alkoxide)/graphene precursor. Before hydrolysis ...
DOI:
10.1016/j.jcis.2021.03.032

19. Tuning parallel manganese dioxide to hollow parallel hydroxyl oxidize iron replicas for high-performance asymmetric supercapacitors

Author:
Wang, Tian; Li, Kailin; Le, Qiujian; Zhu, Shijin; Guo, Xiaolong; Jiang, Debin; Zhang, Yuxin
Source:
Journal of colloid and interface science 2021 v.594 pp. 812-823
ISSN:
0021-9797
Subject:
manganese dioxide,   etc   ; capacitance; electrochemical capacitors; electrochemistry; electrodes; energy density; graphene;     Show all 7 Subjects
Abstract:
... A novel and facile strategy is developed to tune parallel manganese dioxide (MnO₂) to hollow parallel hydroxyl oxidize iron (FeOOH) replicas, which can exactly keep its original morphology. The key factors leading to the morphology-preserved transformation are the low-temperature and dropwise strategy via a serial of controlled experiments. Benefiting from the characteristics of parallel and hollo ...
DOI:
10.1016/j.jcis.2021.03.075

20. Periphytic biofilms accumulate manganese, intercepting its emigration from paddy soil

Author:
Sun, Pengfei; Gao, Mengning; Sun, Rui; Wu, Yonghong; Dolfing, Jan
Source:
Journal of hazardous materials 2021 v.411 pp. 125172
ISSN:
0304-3894
Subject:
manganese,   etc   ; ; adsorption; biofilm; biogeochemical cycles; paddies; paddy soils; polymers; China;     Show all 9 Subjects
Abstract:
... Manganese (Mn) in acidic paddy soil has large potential in emigrating from the soil and pollute adjacent ecosystems. Single microorganisms modulate the biogeochemistry process of Mn via redox reactions, while the roles of microbial aggregates (e.g. periphytic biofilm) in modulating its biogeochemical cycle is poorly constrained. Here we collected a series of periphytic biofilms from acidic paddy f ...
DOI:
10.1016/j.jhazmat.2021.125172