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1. Separation and recovery of cobalt and nickel from end of life products via solvent extraction technique: A review

Author:
Alvial-Hein, Guillermo; Mahandra, Harshit; Ghahreman, Ahmad
Source:
Journal of cleaner production 2021 v.297 pp. 126592
ISSN:
0959-6526
Subject:
nickel,   etc   ; cobalt; solvents;     Show all 3 Subjects
Abstract:
... The significant development in advanced technologies such as lithium-ion batteries has increased the demand of cobalt and nickel. As a result, continuous supply from primary resources leads cobalt to the critical stage and also affects nickel resources extensively. The presence of limited resources can lead to break in the chain of supply of these metals on demand. Therefore, it is necessary to re ...
DOI:
10.1016/j.jclepro.2021.126592

2. Zero-valent ML₂ complexes of group 10 metals supported by terphenyl phosphanes

Author:
Martín, M. Trinidad; Marín, Mario; Rama, Raquel J.; Álvarez, Eleuterio; Maya, Celia; Molina, Francisco; Nicasio, M. Carmen
Source:
Chemical communications 2021 v.57 no.25 pp. 3083-3086
ISSN:
1364-548X
Subject:
nickel,   etc   ; ligands; palladium; platinum;     Show all 4 Subjects
Abstract:
... Bulky terphenyl phosphane ligands PMe₂Ar′ (Ar′ = terphenyl group) facilitate the isolation of zero-valent bis-phosphane complexes of nickel, palladium and platinum. The former show coordination numbers greater than two in the solid state due to the existence of Ni–Cₐᵣₑₙₑ interactions with the terphenyl fragment. ...
DOI:
10.1039/d1cc00676b

3. A proton-responsive ligand becomes a dimetal linker for multisubstrate assembly via nitrate deoxygenation

Author:
Cabelof, Alyssa C.; Carta, Veronica; Caulton, Kenneth G.
Source:
Chemical communications 2021 v.57 no.22 pp. 2780-2783
ISSN:
1364-548X
Subject:
nickel,   etc   ; ligands; nitrates;     Show all 3 Subjects
Abstract:
... A bidentate pyrazolylpyridine ligand (HL) was installed on divalent nickel to give [(HL)₂Ni(NO₃)]NO₃. This compound reacts with a bis-silylated heterocycle, 1,4-bis-(trimethylsilyl)-1,4-diaza-2,5-cyclohexadiene (TMS₂Pz) to simultaneously reduce one of the nitrate ligands and deprotonate one of the HL ligands, giving octahedral (HL)(L⁻)Ni(NO₃). The mononitrate species formed is then further reacted ...
DOI:
10.1039/d0cc07886g

4. Nickel-Catalyzed Reversible Functional Group Metathesis between Aryl Nitriles and Aryl Thioethers

Author:
Delcaillau, Tristan; Boehm, Philip; Morandi, Bill
Source:
Journal of the American Chemical Society 2021 v.143 no.10 pp. 3723-3728
ISSN:
1520-5126
Subject:
nickel,   etc   ; derivatization; nitriles;     Show all 3 Subjects
Abstract:
... We describe a new functional group metathesis between aryl nitriles and aryl thioethers. The catalytic system nickel/dcype is essential to achieve this fully reversible transformation in good to excellent yields. Furthermore, the cyanide- and thiol-free reaction shows high functional group tolerance and great efficiency for the late-stage derivatization of commercial molecules. Finally, synthetic ...
DOI:
10.1021/jacs.1c00529

5. Removal of Ni(II) from strongly acidic wastewater by chelating precipitation and recovery of NiO from the precipitates

Author:
Yang, Xin; Peng, Xianjia; Kong, Linghao; Hu, Xingyun
Source:
Journal of environmental sciences (China) 2021 v.104 pp. 365-375
ISSN:
1001-0742
Subject:
nickel; nickel oxide,   etc   ; carbon dioxide; sodium; temperature; wastewater; China;     Show all 7 Subjects
Abstract:
... Strongly acidic wastewater produced in nonferrous metal smelting industries often contains high concentrations of Ni(II), which is a valuable metal. In this study, the precipitation of Ni(II) from strongly acidic wastewater using sodium dimethyldithiocarbamate (DDTC) as the precipitant was evaluated. The effects of various factors on precipitation were investigated, and the precipitation mechanism ...
DOI:
10.1016/j.jes.2020.12.014

6. Suppressed shuttling effect of polysulfides using three-dimensional nickel hydroxide polyhedrons for advanced lithium-sulfur batteries

Author:
Liu, Pan; Zhong, Wei; Du, Wenyan; Guo, Bingshu; Qi, Yuruo; Bao, Shu-Juan; Xu, Maowen
Source:
Journal of colloid and interface science 2021 v.593 pp. 89-95
ISSN:
0021-9797
Subject:
nickel,   etc   ; electrodes; imidazole; nanosheets; silica;     Show all 5 Subjects
Abstract:
... In this work, controlled-size hollow polyhedron assembled by crumpled nickel hydroxide (Ni(OH)₂) nanosheets from silicon dioxide (SiO₂)-covered zeolitic imidazole framework-67 (ZIF-67@SiO₂) is prepared via a template-sacrificed method. It is found that SiO₂ plays an essential role in keeping intact polyhedrons and suppressing particle growth. Benefiting from structural and compositional advantages ...
DOI:
10.1016/j.jcis.2021.03.008

7. Co/Ni-polyoxotungstate photocatalysts as precursor materials for electrocatalytic water oxidation

Author:
Güttinger, Robin; Wiprächtiger, Giann; Blacque, Olivier; Patzke, Greta R.
Source:
RSC advances 2021 v.11 no.19 pp. 11425-11436
ISSN:
2046-2069
Subject:
nickel,   etc   ; cobalt; oxidation; photocatalysis; photocatalysts;     Show all 5 Subjects
Abstract:
... An open-core cobalt polyoxometalate (POM) [(A-α-SiW₉O₃₄)Co₄(OH)₃(CH₃COO)₃]⁸⁻Co(1) and its isostructural Co/Ni-analogue [(A-α-SiW₉O₃₄)Co₁.₅Ni₂.₅(OH)₃(CH₃COO)₃]⁸⁻CoNi(2) were synthesized and investigated for their photocatalytic and electrocatalytic performance. Co(1) shows high photocatalytic O₂ yields, which are competitive with leading POM water oxidation catalysts (WOCs). Furthermore, Co(1) and ...
DOI:
10.1039/d0ra10792a

8. Boron-modulated surface of hollow nickel framework for improved hydrogen evolution

Author:
Gu, Weishi; Pan, Zhongqin; Tao, Han; Guo, Yanling; Pu, Jun; Zhong, Chenglin; Li, Jiachen; Ye, Changqing; Zhou, Qingwen
Source:
Chemical communications 2021 v.57 no.19 pp. 2404-2407
ISSN:
1364-548X
Subject:
nickel,   etc   ; boron; electrodes; hydrogen production;     Show all 4 Subjects
Abstract:
... A hollow Ni framework (HNF) is designed and prepared to utilize the exterior and interior surface active sites of a Ni-based binder-free and support-free electrode. Furthermore, the more efficient Ni–B active sites are then in situ introduced on the surface of HNF. This micro/nano structure engineering, together with the surface boron modulation, results in a synergistically enhanced catalytic eff ...
DOI:
10.1039/d0cc08084e

9. A Fluorescence-Detected Coordination-Induced Spin State Switch

Author:
Kurz, Hannah; Schötz, Konstantin; Papadopoulos, Ilias; Heinemann, Frank W.; Maid, Harald; Guldi, Dirk M.; Köhler, Anna; Hörner, Gerald; Weber, Birgit
Source:
Journal of the American Chemical Society 2021 v.143 no.9 pp. 3466-3480
ISSN:
1520-5126
Subject:
nickel,   etc   ; acidity; fluorescence; ligands; pyridines;     Show all 5 Subjects
Abstract:
... The response of the spin state to in situ variation of the coordination number (CISSS) is a promising and viable approach to smart sensor materials, yet it suffers to date from insensitive detection. Herein, we present the synthetic access to a family of planar nickel(II) complexes, whose CISSS is sensitively followed by means of fluorescence detection. For this purpose, nickel(II) complexes with ...
DOI:
10.1021/jacs.0c12568

10. Redox Activity of Pyridine-Oxazoline Ligands in the Stabilization of Low-Valent Organonickel Radical Complexes

Author:
Wagner, Clifton L.; Herrera, Gabriel; Lin, Qiao; Hu, Chunhua T.; Diao, Tianning
Source:
Journal of the American Chemical Society 2021 v.143 no.14 pp. 5295-5300
ISSN:
1520-5126
Subject:
nickel,   etc   ; Lewis acids; cross-coupling reactions; ligands;     Show all 4 Subjects
Abstract:
... Low-valent organonickel radical complexes are common intermediates in cross-coupling reactions and metalloenzyme-mediated processes. The electronic structures of N-ligand supported nickel complexes appear to vary depending on the actor ligands and the coordination number. The reduction products of a series of divalent (pyrox)Ni complexes establish the redox activity of pyrox in stabilizing electro ...
DOI:
10.1021/jacs.1c00440

11. Propelling electrochemical kinetics of transition metal oxide for high-rate lithium-ion battery through in situ deoxidation

Author:
Peng, Jing; Zhang, Weicai; Zheng, Mingtao; Hu, Hang; Xiao, Yong; Liu, Yingliang; Liang, Yeru
Source:
Journal of colloid and interface science 2021 v.587 pp. 590-596
ISSN:
0021-9797
Subject:
nickel oxide,   etc   ; electrochemistry; lithium batteries; reaction kinetics;     Show all 4 Subjects
Abstract:
... To engineer advanced anodes for high-rate lithium-ion battery, rational structural design with insightful understanding of rapid reaction kinetics is important and still highly desirable. In this work, a high-temperature in situ deoxidation strategy is used to propel electrochemical kinetics of NiO through incorporating an intrinsic Ni component. Both theoretical calculation and experimental study ...
DOI:
10.1016/j.jcis.2020.11.016

12. Investigation of corrosion characteristics of Cu-10Ni-1.2Fe-xMn (x = 0.53, 0.87, 1.19) alloy in 3.5% NaCl solution

Author:
Zhu, Zhiyun; Li, Shuhao; Zhang, Rongwei
Source:
RSC advances 2021 v.11 no.19 pp. 11318-11328
ISSN:
2046-2069
Subject:
nickel oxide,   etc   ; alloys; cations; corrosion; dielectric spectroscopy;     Show all 5 Subjects
Abstract:
... Cupronickel alloys have been broadly utilized in various fields due to their excellent properties. In this paper, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) curves were used to study the impact of different Mn contents on the corrosion resistance of 90/10 cupronickel alloy. Surface morphology, electronic structure, and phase composition of the film formed o ...
DOI:
10.1039/d0ra10678j

13. A Simple Model for Gas-Phase Synthesis of Nickel Nanoparticles

Author:
Kholghy, M. Reza; Schumann, Alexander
Source:
Energy & fuels 2021 v.35 no.6 pp. 5383-5391
ISSN:
1520-5029
Subject:
nickel,   etc   ; coagulation; energy; molecular dynamics; thermal degradation;     Show all 5 Subjects
Abstract:
... Gas-phase synthesis of nickel (Ni) nanoparticles by thermal decomposition of nickel tetracarbonyl, Ni(CO)₄, is simulated accounting for nucleation, surface growth, coagulation, and sintering. By detailed analysis of phenomenological expressions for sintering, it is shown that surface diffusion (SD) is the dominant sintering mechanism for Ni nanoparticles at low temperatures (T < 700 K) and early s ...
DOI:
10.1021/acs.energyfuels.0c03917

14. Electron transfer within β-diketiminato nickel bromide and cobaltocene redox couples activating CO₂

Author:
Zimmermann, Philipp; Kilpatrick, Alexander F. R.; Ar, Deniz; Demeshko, Serhiy; Cula, Beatrice; Limberg, Christian
Source:
Chemical communications 2021 v.57 no.7 pp. 875-878
ISSN:
1364-548X
Subject:
nickel,   etc   ; carbon dioxide; crystallization; electron transfer;     Show all 4 Subjects
Abstract:
... Reduction of β-diketiminato nickel(ii) complexes (LᵗᴮᵘNiᴵᴵ) to the corresponding nickel(i) compounds does not require alkali metal compounds but can also be performed with the milder cobaltocenes. LᵗᴮᵘNiBr and Cp₂Co have rather similar redox potentials, so that the equilibrium with the corresponding electron transfer compound [LᵗᴮᵘNiᴵBr][Cp₂Coᴵᴵᴵ] (ETC) clearly lies on the side of the starting mat ...
DOI:
10.1039/d0cc06983c

15. Unraveling the catalytic mechanisms of H₂ production with thiosemicarbazone nickel complexes

Author:
Barrozo, Alexandre; Orio, Maylis
Source:
RSC advances 2021 v.11 no.9 pp. 5232-5238
ISSN:
2046-2069
Subject:
nickel,   etc   ; electron transfer; ligands; protonation; reaction kinetics;     Show all 5 Subjects
Abstract:
... Thiosemicarbazone-based complexes have been explored as a new class of redox-active catalysts H₂ production due to their flexibility for extensive optimization. To rationalize the process, we need to understand how these complexes function. In this work, we used DFT calculations to investigate the various mechanisms that could take place for three previously characterized Ni complexes. We found th ...
DOI:
10.1039/d0ra10212a

16. Hydrogen-bonded nickel(i) complexes

Author:
Wilson, Jessica R.; Zeller, Matthias; Szymczak, Nathaniel K.
Source:
Chemical communications 2021 v.57 no.6 pp. 753-756
ISSN:
1364-548X
Subject:
nickel,   etc   ; fluorides; hydrogen; hydrogen bonding; spectral analysis;     Show all 5 Subjects
Abstract:
... A series of nickel(ii) tris(2-pyridylmethyl)amine (TPA) complexes featuring appended hydrogen bonds (H-bonds) to halides (F, Cl, Br) was synthesized and charcterized. Reduction to the nickel(i) state provided access to an unusual nickel(i) fluoride complex stabilized by H-bonds, enabling structural and spectroscopic characterization. ...
DOI:
10.1039/d0cc07216h

17. Fabrication of a NiO@NF supported free-standing porous carbon supercapacitor electrode using temperature-controlled phase separation method

Author:
Deng, Bo-wen; Yang, Yi; Yin, Bo; Yang, Ming-bo
Source:
Journal of colloid and interface science 2021 v.594 pp. 770-780
ISSN:
0021-9797
Subject:
nickel; nickel oxide,   etc   ; capacitance; carbon; electrochemical capacitors; electrochemistry; electrodes; electron transfer; foams; polyacrylonitrile; pyrolysis; separation;     Show all 12 Subjects
Abstract:
... To address the problem that capacitor electrode being low in capacitance and reliant on binder to retain shape, a binder-free, self-supporting supercapacitor electrode is made via pyrolysis of porous polyacrylonitrile (PAN) formed by phase separation, supported by hydrothermally treated nickel foam backbone. The role of hydrothermal reaction time and PAN solution concentration on electrochemical p ...
DOI:
10.1016/j.jcis.2021.03.089

18. Coaxial nanofibers of nickel/gadolinium oxide/nickel oxide as highly effective electrocatalysts for hydrogen evolution reaction

Author:
El-Maghrabi, Heba H.; Nada, Amr A.; Bekheet, Maged F.; Roualdes, Stéphanie; Riedel, Wiebke; Iatsunskyi, Igor; Coy, Emerson; Gurlo, Aleksander; Bechelany, Mikhael
Source:
Journal of colloid and interface science 2021 v.587 pp. 457-466
ISSN:
0021-9797
Subject:
nickel; nickel oxide,   etc   ; cost effectiveness; durability; electrical conductivity; gadolinium; hydrogen production; nanofibers; platinum; reaction kinetics;     Show all 10 Subjects
Abstract:
... Cost-effective, active and stable electrocatalysts are crucial for hydrogen production via electrocatalytic water splitting. Here, we describe the preparation of novel nanofibers (NF) made of Ni/Gd₂O₃/NiO heterostructures by electrospinning. The fabricated materials showed high electrocatalytic performance for hydrogen evolution reaction (HER) with onset potential values of 89 mV, which are very c ...
DOI:
10.1016/j.jcis.2020.11.103

19. Review on nickel-based adsorption materials for Congo red

Author:
Zheng, Yingqiu; Cheng, Bei; Fan, Jiajie; Yu, Jiaguo; Ho, Wingkei
Source:
Journal of hazardous materials 2021 v.403 pp. 123559
ISSN:
0304-3894
Subject:
nickel; nickel oxide,   etc   ; adsorbents; adsorption; aquatic environment; azo dyes; pollution; sulfides; surface area; sustainable development;     Show all 10 Subjects
Abstract:
... Excessive synthetic dyestuffs in the aquatic environment pose various ecological and health issues that are detrimental to sustainable development. Adsorption is considered a feasible technique of eliminating dye pollutants from the water environment because of its advantages of high efficiency, low cost, easy operation, and absence of secondary pollution. Among the many dyes, Congo red (CR) is a ...
DOI:
10.1016/j.jhazmat.2020.123559

20. STM study of oxygen intercalation at the graphene/Ni(111) interface

Author:
Kovalenko, S.L.; Andryushechkin, B.V.; Eltsov, K.N.
Source:
Carbon 2020 v.164 pp. 198-206
ISSN:
0008-6223
Subject:
nickel; nickel oxide,   etc   ; graphene; oxygen; temperature;     Show all 5 Subjects
Abstract:
... This paper reports an STM study of all stages of the intercalation of oxygen at the interface of a strongly coupled graphene/Ni(111) system prepared by temperature programmed growth (TPG) method. We have found that at the first stage of the intercalation at 120 °C, oxygen forms a chemisorbed layer on Ni(111) with a coverage about 0.26–0.28 ML, approximately described by the compressed p(2×2) latti ...
DOI:
10.1016/j.carbon.2020.03.054