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1. Removal of pharmaceutical in a biogenic/chemical manganese oxide system driven by manganese-oxidizing bacteria with humic acids as sole carbon source

Author:
Tingming Ye; Huijuan Liu; Weixiao Qi; Jiuhui Qu
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 734-741
ISSN:
1001-0742
Subject:
manganese dioxide; manganese monoxide,   etc   ; Pseudomonas; bacteria; caffeine; carbon; decaffeination; filtration; quartz; sand; synergism; China;     Show all 12 Subjects
Abstract:
... Bioaugmented sand filtration has attracted considerable attention because it can effectively remove contaminants in drinking water without additional chemical reagent addition. In this study, a synthesized chemical manganese dioxide (MnO₂)-coated quartz sand (MnQS) and biogenic manganese oxide (BioMnOₓ) composite system was proposed to simultaneously remove typical pharmaceutical contaminants and ...
DOI:
10.1016/j.jes.2022.05.035

2. Promotional effect of cobalt doping on catalytic performance of cryptomelane-type manganese oxide in toluene oxidation

Author:
Ning Dong; Mengyue Chen; Qing Ye; Dan Zhang; Hongxing Dai
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 263-274
ISSN:
1001-0742
Subject:
manganese; manganese monoxide,   etc   ; Ammonia (Rotaliidae); Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; carbon dioxide; carbonates; catalytic activity; cobalt; electron transfer; hydrogen; oxidation; oxygen; sulfates; synergism; toluene; China;     Show all 18 Subjects
Abstract:
... The cryptomelane-type manganese oxide (OMS-2)-supported Co (xCo/OMS-2; x = 5, 10, and 15 wt.%) catalysts were prepared via a pre-incorporation route. The as-prepared materials were used as catalysts for catalytic oxidation of toluene (2000 ppmV). Physical and chemical properties of the catalysts were measured using the X-ray diffraction (XRD), Fourier transform infrared spectroscopic (FT-IR), scan ...
DOI:
10.1016/j.jes.2022.03.024

3. Tailoring manganese oxide nanoplates enhances oxygen evolution catalysis in acid

Author:
Zebi Zhao; Bo Zhang; Dongyu Fan; Yonggang Wang; Hujiang Yang; Kai Huang; Xuchao Pan; Ruiming Zhang; Haolin Tang; Ming Lei
Source:
Journal of catalysis 2022 v.405 pp. 265-272
ISSN:
0021-9517
Subject:
manganese; manganese chloride; manganese monoxide,   etc   ; air; catalysts; catalytic activity; cost effectiveness; electrolysis; oxygen production;     Show all 9 Subjects
Abstract:
... Achieving active and stable oxygen evolution reaction (OER) in acid media is highly promising towards cost-effective and sustainable proton exchange membrane (PEM) electrolyzers, especially driven by the two-dimensional (2D) nanostructured catalysts. Here, we report a single-phase manganese tetroxide nanoplates (R20-Mn) by simply rapid annealing of manganese chloride tetrahydrate in air as an effi ...
DOI:
10.1016/j.jcat.2021.12.009

4. Alteration of birnessite reactivity in dynamic anoxic/oxic environments

Author:
Qinzhi Li; Dieter Schild; Mathieu Pasturel; Johannes Lützenkirchen; Khalil Hanna
Source:
Journal of hazardous materials 2022 v.433 pp. 128739
ISSN:
0304-3894
Subject:
manganese; manganese monoxide,   etc   ; antibiotics; birnessite; ionic strength; oxidation; pH;     Show all 7 Subjects
Abstract:
... Although the oxidative capacity of manganese oxides has been widely investigated, potential changes of the surface reactivity in dynamic anoxic/oxic environments have been often overlooked. In this study, we showed that the reactivity of layer structured manganese oxide (birnessite) was highly sensitive to variable redox conditions within environmentally relevant ranges of pH (4.0 – 8.0), ionic st ...
DOI:
10.1016/j.jhazmat.2022.128739

5. The effect of Fe³⁺ ions on the electrochemical behaviour of ocean manganese nodule reduction leaching in sulphuric acid solution

Author:
Jinxing Kang; Yayun Wang; Yunfei Qiu
Source:
RSC advances 2022 v.12 no.2 pp. 1121-1129
ISSN:
2046-2069
Subject:
manganese; manganese monoxide,   etc   ; electrochemistry; hydrogen; hydrolysis; sulfuric acid; voltammetry;     Show all 7 Subjects
Abstract:
... The effect of Fe³⁺ ions on the ocean manganese nodule reductive leaching in imitated sulphuric acid solutions was investigated. This work is presented in two courses, including the influence of Fe³⁺ ions on valuable metal extraction and the electrochemical reductive dissolution of manganese nodules. The results show that the beneficial effects of Fe³⁺ ion can be interpreted based on two aspects: t ...
DOI:
10.1039/d1ra08440b

6. Farming for battery metals

Author:
Philip Nti Nkrumah; Guillaume Echevarria; Peter D. Erskine; Antony van der Ent
Source:
Science of the total environment 2022 v.827 pp. 154092
ISSN:
0048-9697
Subject:
manganese; manganese monoxide,   etc   ; climate change; cobalt; combustion; environment; industry; lithium; nickel; technological change;     Show all 10 Subjects
Abstract:
... Globally, there is a major shift to electric vehicles to combat climate change and these vehicles are currently powered by lithium-ion batteries that contain nickel cobalt manganese oxide materials. This technological change from internal combustion engines means that demand for battery minerals will need to increase by factors of >20 for the critical metals required for batteries in the next thre ...
DOI:
10.1016/j.scitotenv.2022.154092

7. Fungal transformation of natural and synthetic cobalt‐bearing manganese oxides and implications for cobalt biogeochemistry

Author:
John Ferrier; Laszlo Csetenyi; Geoffrey Michael Gadd
Source:
Environmental microbiology 2022 v.24 no.2 pp. 667-677
ISSN:
1462-2912
Subject:
manganese; manganese monoxide,   etc   ; Aspergillus niger; adsorption; biogeochemistry; bioremediation; birnessite; cobalt; fungi; laterites; oxalates;     Show all 11 Subjects
Abstract:
... Manganese oxide minerals can become enriched in a variety of metals through adsorption and redox processes, and this forms the basis for a close geochemical relationship between Mn oxide phases and Co. Since oxalate‐producing fungi can effect geochemical transformation of Mn oxides, an understanding of the fate of Co during such processes could provide new insights on the geochemical behaviour of ...
DOI:
10.1111/1462-2920.15526

8. First evidence of crucible steel production in Medieval Anatolia, Kubadabad: A trace for possible technology exchange between Anatolia and Southern Asia

Author:
Ümit Güder; Muharrem Çeken; Alptekin Yavaş; Ünsal Yalçın; Dierk Raabe
Source:
Journal of archaeological science 2022 v.137 pp. 105529
ISSN:
0305-4403
Subject:
manganese; manganese monoxide,   etc   ; Turkey (country); archaeology; ceramics; charcoal; fabrics; sand; steel; straw; South Asia;     Show all 11 Subjects
Abstract:
... In this article, we present the first archaeological evidence for crucible steel production in Anatolia uncovered in recent excavations at Kubadabad, which was built as a palace by the Anatolian Seljuks in the early 13th century AD. Along with plenty of crucible sherds recovered at the site, blades made of crucible steel, production waste-iron chunks and manganese oxide pellets also revealed remar ...
DOI:
10.1016/j.jas.2021.105529

9. Method to determine the decrepitation index of South African manganese ores when heating in a rotary kiln

Author:
M.S. Moholwa; J.D. Steenkamp; H.L. Rutto
Source:
MethodsX 2022 v.9 pp. 101720
ISSN:
2215-0161
Subject:
manganese,   etc   ; furnaces; kilns; temperature;     Show all 4 Subjects
Abstract:
... Manganese ores are the major raw materials utilized in the production of manganese ferroalloys. Decrepitation, which is described as the breakage or disintegration of the ore particles upon heating in a rotary kiln, is an important quality parameter of these ores. The Decrepitation Index (DI), the parameter used to describe the extent of decrepitation, is described as the ratio of the mass of part ...
DOI:
10.1016/j.mex.2022.101720

10. Effect of iron substitution in cryptomelane on the heterogeneous reaction with isoprene

Author:
Peng Liu; Yilian Kong; Xiaoliang Liang; Yuxi Liao; Tan Li; Daoyong Tan; Runliang Zhu; Mingli Fu; Steven L. Suib; Daiqi Ye
Source:
Journal of hazardous materials 2022 v.437 pp. 129293
ISSN:
0304-3894
Subject:
manganese; manganese monoxide,   etc   ; adsorption; air quality; ambient temperature; heat; hydrogen bonding; isoprene; oxidation; oxygen; pollutants;     Show all 11 Subjects
Abstract:
... Biogenic isoprene is an important pollutant for regional air quality. Being ubiquitously distributed on the earth surface, manganese (hydr)oxides should play a vital role in the transformation of isoprene. Cryptomelane is a typical manganese oxide with isomorphous substitution of Fe for Mn, but less attention has been paid to its heterogeneous reaction with isoprene. When Fe³⁺ replaces Mn³⁺, K⁺ is ...
DOI:
10.1016/j.jhazmat.2022.129293

11. Hyaluronic acid-modified manganese dioxide-enveloped hollow copper sulfide nanoparticles as a multifunctional system for the co-delivery of chemotherapeutic drugs and photosensitizers for efficient synergistic antitumor treatments

Author:
Xiaonan Li; Yuanjie Pan; Jia Zhou; Ge Yi; Cong He; Ziming Zhao; Yanzhuo Zhang
Source:
Journal of colloid and interface science 2022 v.605 pp. 296-310
ISSN:
0021-9797
Subject:
manganese; manganese dioxide,   etc   ; biodegradability; cytotoxicity; doxorubicin; drug therapy; fluorescence; hyaluronic acid; neoplasms; singlet oxygen; sulfides;     Show all 11 Subjects
Abstract:
... This paper presents the design of a new type of intelligent and versatile all-in-one therapeutic nanoplatform for the co-delivery of chemotherapeutic drugs and photosensitizers to facilitate multimodal antitumor treatment; the system is based on hyaluronic acid (HA)-modified manganese dioxide (MnO₂)-enveloped hollow porous copper sulfide (CuS) nanoparticles (CuS@MnO₂/HA NPs). In this system, a CuS ...
DOI:
10.1016/j.jcis.2021.07.092

12. Simultaneous removal of iron, manganese, and ammonia enhanced by preloaded MnO2 on low-pressure ultrafiltration membrane

Author:
Xuesong Ye; Zhencheng Ge; Qiliang Xiao; Bohan Liu; Yujie Men; Jinyong Liu; Jun Nan
Source:
Journal of membrane science 2022 pp. 120641
ISSN:
0376-7388
Subject:
manganese; manganese dioxide,   etc   ; ammonia; anaerobic ammonium oxidation; cost effectiveness; iron; pollution control; ultrafiltration; water supply;     Show all 9 Subjects
Abstract:
... Low-pressure ultrafiltration membrane (LPM) is an ideal technology for decentralized water supply. However, the applicability for removing ferrous iron (Fe²⁺), manganese (Mn²⁺), and ammonia (NH₄⁺) in the source water and related mechanisms remained unknown. To fill this major knowledge gap, we systematically compared the pristine (pr-LPM) and MnO₂-preloaded membrane (Mn-LPM). Mn-LPM allowed higher ...
DOI:
10.1016/j.memsci.2022.120641

13. Manganese promoted wheat straw decomposition by regulating microbial communities and enzyme activities

Author:
M. Jin; X. Chen; M. Gao; R. Sun; D. Tian; Q. Xiong; J. Wei; Y.K. Kalkhajeh; H. Gao
Source:
Journal of applied microbiology 2022 v.132 no.2 pp. 1079-1090
ISSN:
1364-5072
Subject:
manganese; manganese peroxidase,   etc   ; biodegradation; biomass; carbon; enzyme activity; laccase; lignin peroxidase; lignocellulases; nitrogen; soil; wheat straw; xylanases;     Show all 13 Subjects
Abstract:
... AIMS: This study investigated the dose‐effect of manganese (Mn) addition on wheat straw (WS) decomposition, and explored the potential mechanisms of Mn involved in the acceleration of WS decomposition in regards to the soil microbial communities and enzyme activities. METHODS AND RESULTS: A 180‐day incubation experiment was performed to examine the decomposition of WS under four Mn levels, that is ...
DOI:
10.1111/jam.15266

14. Study on dry desulfurization performance of MnOx hydrothermally loaded halloysite desulfurizer

Author:
Zhang Lei; Shu Hao; Wang Yusu; Jia Yang
Source:
Environmental technology & innovation 2022 v.26 pp. 102308
ISSN:
2352-1864
Subject:
manganese; manganese monoxide,   etc   ; chitosan; desulfurization; environmental technology; gases; gels; halloysite; hot water treatment; microparticles; pollutants; pollution; temperature;     Show all 13 Subjects
Abstract:
... The quenching process has the characteristics of complex pollutant composition, high purification difficulty, and serious environmental pollution. In order to meet the national emission standards, the coke quenching tail gas containing SO₂ must be treated. In this paper, halloysite is selected as carrier, modified by low-temperature molten salt etching, manganese oxide is supported by hydrothermal ...
DOI:
10.1016/j.eti.2022.102308

15. Mechanochemically synthesized Fe-Mn binary oxides for efficient As(III) removal: Insight into the origin of synergy action from mutual Fe and Mn doping

Author:
Huimin Hu; Qiwu Zhang; Chao Wang; Min Chen; Mengfei Chen
Source:
Journal of hazardous materials 2022 v.424 pp. 127708
ISSN:
0304-3894
Subject:
manganese; manganese monoxide,   etc   ; adsorbents; adsorption; arsenic; coprecipitation; electron transfer; ferrihydrite; iron oxides; oxidants; oxidation; pH; potassium permanganate; wastewater;     Show all 14 Subjects
Abstract:
... Iron manganese oxide resources are widely derived from the geological structure, and their combinations play an important role in the migration and transformation of arsenic. Iron oxide and manganese oxide exist generally in a mixed state in Fe-Mn oxides synthesized via the well studied co-precipitation methods using potassium permanganate and manganese/iron sulfates. Herein, a newly designed Fe-M ...
DOI:
10.1016/j.jhazmat.2021.127708

16. Mitigating cadmium contamination of rice soils supporting tobacco–rice rotation in southern China: Win–win or lose–lose?

Author:
Yang Yang; Tianqi Wang; Yanling Li; Meie Wang; Weiping Chen; Yating Dai
Source:
Journal of hazardous materials 2022 v.425 pp. 128052
ISSN:
0304-3894
Subject:
manganese; manganese oxides,   etc   ; cadmium; economics; food intake; kidneys; leaves; males; nitrogen; phosphorus; phytoaccumulation; rice; soil pH; tillage; China;     Show all 15 Subjects
Abstract:
... The present study evaluates the sustainability of tobacco-rice rotation by reducing the phytoavailability of cadmium (Cd) to rice by combining large-scale field sampling and regional investigations in southern China. The rotation involves frequent tillage and liberal application of nitrogen and phosphorus fertilizers, which increases yields but lowers soil pH. As a result, manganese is lost from s ...
DOI:
10.1016/j.jhazmat.2021.128052

17. Manganese complexes and manganese-based metal-organic frameworks as contrast agents in MRI and chemotherapeutics agents: Applications and prospects

Author:
Rouqiao Zheng; Junru Guo; Xinyi Cai; Lianjie Bin; Chengyu Lu; Amita Singh; Manoj Trivedi; Abhinav Kumar; Jianqiang Liu
Source:
Colloids and surfaces 2022 v.213 pp. 112432
ISSN:
0927-7765
Subject:
manganese,   etc   ; biocompatibility; drugs; ligands; photochemotherapy; toxicity;     Show all 6 Subjects
Abstract:
... Manganese-based Metal-organic Frameworks (Mn-MOFs) represents a unique sub-class of MOFs with low toxicity, oxidative ability, and biocompatibility, which plays vital role in the application of this class of MOFs in medical field. Mn-MOFs show great potential in biomedical applications, and has been extensively studied as compared to other MOFs in transition metal series. They are important in med ...
DOI:
10.1016/j.colsurfb.2022.112432

18. Turning commercial MnO2 (≥85 wt%) into high-crystallized K+-doped LiMn2O4 cathode with superior structural stability by a low-temperature molten salt method

Author:
Junfei Ma; Bei Long; Qing Zhang; Yuzhu Qian; Ting Song; Wenyuan He; Manjun Xiao; Li Liu; Xianyou Wang; Yexiang Tong
Source:
Journal of colloid and interface science 2022 v.608 pp. 1377-1383
ISSN:
0021-9797
Subject:
manganese dioxide,   etc   ; cathodes; crystal structure; temperature;     Show all 4 Subjects
Abstract:
... The obtainment of low-cost, easily prepared and high-powered LiMn₂O₄ is the key to achieve its wide application in various electronic devices. In this work, a mild and easily scaled molten salt method (KCl@LiCl) is utilized to convert commercial MnO₂ to the high-performance LiMn₂O₄. At the same reaction temperature, the molten salt method leads to the formation of K⁺-doped LiMn₂O₄ with higher crys ...
DOI:
10.1016/j.jcis.2021.10.113

19. Urchin like inverse spinel manganese doped NiCo2O4 microspheres as high performances anode for lithium-ion batteries

Author:
Zhenyan Liang; Huayao Tu; Zhen Kong; Xiaogang Yao; Deqin Xu; Shengfu Liu; Yongliang Shao; Yongzhong Wu; Xiaopeng Hao
Source:
Journal of colloid and interface science 2022 v.616 pp. 509-519
ISSN:
0021-9797
Subject:
manganese,   etc   ; anodes; kinetics; microparticles; temperature; titration;     Show all 6 Subjects
Abstract:
... The ternary transition metal oxides are promising anode material for lithium-ion batteries (LIBs). However, their practical applications are greatly hindered by the poor conductivity and huge volume changes. To solve the issues, urchin-like inverse spinel manganese (Mn) doped NiCo₂O₄ hierarchical microspheres were fabricated through a facile hydrothermal approach and subsequent annealing treatment ...
DOI:
10.1016/j.jcis.2022.02.069

20. Mixed-valence manganese oxide/reduced graphene oxide composites with enhanced pseudocapacitive performance

Author:
Di Guo; Zhirui Hu; Qian Li; Lijun Bian; Yu Song; Xiaoxia Liu
Source:
Journal of materials science 2022 v.57 no.1 pp. 563-575
ISSN:
0022-2461
Subject:
manganese; manganese monoxide,   etc   ; capacitance; electrical conductivity; electrochemistry; electrodes; electron transfer; graphene; graphene oxide; hot water treatment; microstructure; oxidation; temperature;     Show all 13 Subjects
Abstract:
... As typical pseudocapacitive materials, manganese oxides have attracted great interest due to their high theoretical specific capacitance, abundant oxidation states and crystal structures. However, it is still struggling from inferior electrical conductivity, which comes from their natural properties and limited structure used. In this paper, we fabricate hierarchical mixed-valence manganese oxide/ ...
DOI:
10.1007/s10853-021-06613-7