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1. Ni(NH3)62+ more efficient than Ni(H2O)62+ and Ni(OH)2 for catalyzing water and phenol oxidation on illuminated Bi2MoO6 with visible light

Author:
Yaru Wang; Yechen Wang; Xubo Huang; Min Chen; Yiming Xu
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 556-564
ISSN:
1001-0742
Subject:
nickel,   etc   ; electrodes; ligands; light; liquid-solid interface; oxidation; perchlorates; phenol; photocatalysis; China;     Show all 10 Subjects
Abstract:
... Nickel (hydr)oxide (NiOH) is known to be good co-catalyst for the photoelectrochemical oxidation of water, and for the photocatalytic oxidation of organics on different semiconductors. Herein we report a greatly improved activity of Bi₂MoO₆ (BMO) by nickel hexammine perchlorate (NiNH). Under visible light, phenol oxidation on BMO was slow. After NiNH, NiOH, and Ni²⁺ loading, a maximum rate of phen ...
DOI:
10.1016/j.jes.2022.05.021

2. Effect of iron ion configurations on Ni2+ removal in electrocoagulation

Author:
Xiaoliu Lü; Tao Xu; Yihui Zhou; Qingjuan Peng; Jinhua Ou; Bonian Hu; Zhihui Xie; Xiping Lei; Gang Yu
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 823-834
ISSN:
1001-0742
Subject:
nickel,   etc   ; adsorption; dyes; electrocoagulation; electrolysis; heavy metals; industry; methyl orange; polymers; spectroscopy; wastewater; China;     Show all 12 Subjects
Abstract:
... Electrocoagulation (EC) has been widely used to treat the heavy metal wastewater in industry. A novel process of sinusoidal alternating current electrocoagulation (SACC) is adopted to remove Ni²⁺ in wastewater in this study. The morphology of precipitates and the distribution of the main functional iron configurations were investigated. Ferron timed complex spectroscopy can identify the monomeric ...
DOI:
10.1016/j.jes.2022.01.037

3. Nickel nanoparticles embedded in porous carbon-coated honeycomb ceramics: A potential monolithic catalyst for continuous hydrogenation reaction

Author:
Yeliang Sheng; Jinfei Peng; Lei Ma; Yunyi Zhang; Taotao Jiang; Xiaonian Li
Source:
Carbon 2022 pp. -
ISSN:
0008-6223
Subject:
nickel; nickel oxide,   etc   ; air; carbon; carbonization; catalysts; catalytic activity; ceramics; hydrogenation; particle size; temperature;     Show all 11 Subjects
Abstract:
... The preparation method of porous carbon coated honeycomb ceramic monolithic catalysts is limited to traditional ideas. The porous carbon and the active metal particles are formed step by step. We have designed a novel preparation method and constructed a series of nickel-embedded porous carbon-coated (Ni@C) monolithic catalysts with different carbonization temperatures. Through the synchronous for ...
DOI:
10.1016/j.carbon.2022.06.017

4. Efficient synthesis of α-Nitro-β-Dialdimine ligands via Equilibrium–Controlling approach

Author:
Mahiro Nakabayashi; Nagatoshi Nishiwaki; Akitaka Ito; Shotaro Hayashi; Kento Iwai
Source:
Tetrahedron letters 2022 pp. 153948
ISSN:
0040-4039
Subject:
nickel,   etc   ; Lewis bases; ligands;     Show all 3 Subjects
Abstract:
... Reactions of β-formyl-β-nitroenamine with anilines afforded N,N’-diaryl-α-nitro-β-dialdimines; however, only small amounts of dialdimines were obtained when anilines possessing an electron-withdrawing group were employed. This disadvantage was overcome by adding anilinium salts to control the equilibrium, which resulted in the formation of dialdimines in considerably improved yields. This method f ...
DOI:
10.1016/j.tetlet.2022.153948

5. Nickel-Catalyzed Addition of C–C Bonds of Amides to Strained Alkenes: The 1,2-Carboaminocarbonylation Reaction

Author:
Yuri Ito; Syun Nakatani; Ryota Shiraki; Takuya Kodama; Mamoru Tobisu
Source:
Journal of the American Chemical Society 2022 v.144 no.2 pp. 662-666
ISSN:
1520-5126
Subject:
nickel,   etc   ; alkenes; amides; catalysts;     Show all 4 Subjects
Abstract:
... C(aryl)–C(═O) bonds of aryl amides can be activated and added across alkenes with the aid of a nickel catalyst. This 1,2-carboaminocarbonylation reaction enables the dicarbofunctionalization of alkenes with an atom economy of 100%. ...
DOI:
10.1021/jacs.1c09265

6. Diverse comparative studies for preferential binding of graphene oxide and transition metal oxide nanoparticles

Author:
Shehryar Ahmad; Muhammad Haris Ayoub; Asad Muhammad Khan; Amir Waseem; Muhammad Yasir; Muhammad Saqib Khan; Tariq Mahmood Bajwa; Ahson Jabbar Shaikh
Source:
Colloids and surfaces 2022 v.647 pp. 129057
ISSN:
0927-7757
Subject:
nickel oxide,   etc   ; graphene oxide; spectroscopy;     Show all 3 Subjects
Abstract:
... Graphene oxide being a low-cost material with multiple functionalities and well-known spectroscopic properties is studied for its preferential binding through its functional groups with Fe₃O₄, CoO, NiO, CuO and ZnO NPs using various techniques, where CoO nanoparticles have shown the highest binding affinity among these metal oxide nanoparticles. Transition metal oxide nanoparticles along with carb ...
DOI:
10.1016/j.colsurfa.2022.129057

7. Expedient Ni-catalyzed C–H/C–H cross-dehydrogenative coupling of aryl amides with azoles

Author:
Tanumay Sarkar; Prabhat Kumar Maharana; Subhasish Roy; Tharmalingam Punniyamurthy
Source:
Chemical communications 2022 v.58 no.40 pp. 5980-5983
ISSN:
1364-548X
Subject:
nickel,   etc   ; amides; aromatic hydrocarbons; azoles;     Show all 4 Subjects
Abstract:
... A nickel-catalyzed C–H heteroarylation of arenes has been described using a removable oxazoline-aniline derived directing group. Utilization of an inexpensive nickel(ii)-catalyst, substrate scope, functional group diversity and late-stage functionalization of xanthine-derived commercial drugs are the important practical features. ...
DOI:
10.1039/d2cc01097f

8. Externally self-supported metallic nickel hollow fiber membranes for hydrogen separation

Author:
Mingming Wang; Zhigang Wang; Xiaoyao Tan; Shaomin Liu
Source:
Journal of membrane science 2022 v.653 pp. 120513
ISSN:
0376-7388
Subject:
nickel,   etc   ; air; coagulants; hydrogen; microstructure;     Show all 5 Subjects
Abstract:
... Highly-asymmetric metallic Ni hollow fiber membranes (NHFMs) with a dense inner skin layer and an outer porous substrate were fabricated by a modified phase inversion and sintering technique. A triple-orifice spinneret was used for spinning the hollow fiber precursors with water as the internal coagulant and a solvent-ethanol mixture as the temporary external coagulant. The hollow fiber precursors ...
DOI:
10.1016/j.memsci.2022.120513

9. Nickel chalcogenides as selective ethanol oxidation electro-catalysts and their structure–performance relationships

Author:
Yufeng Zhang; Lipeng Zhang; Chun Song; Yangyuanxiang Qin; Lianyue Lu; Wei Zhu; Zhongbin Zhuang
Source:
Chemical communications 2022 v.58 no.15 pp. 2496-2499
ISSN:
1364-548X
Subject:
nickel,   etc   ; acetic acid; ethanol; oxidation;     Show all 4 Subjects
Abstract:
... Five nickel chalcogenides have been studied and they showed high selectivity towards selective ethanol electro-oxidation to acetic acid. The activities of the different nickel chalcogenides are correlated with the Ni–Ni projected distances of the catalysts. ...
DOI:
10.1039/d1cc07086j

10. Oxidative Addition of Aryl Halides to a Ni(I)-Bipyridine Complex

Author:
Stephen I. Ting; Wendy L. Williams; Abigail G. Doyle
Source:
Journal of the American Chemical Society 2022 v.144 no.12 pp. 5575-5582
ISSN:
1520-5126
Subject:
nickel,   etc   ; Americans; catalytic activity; journals;     Show all 4 Subjects
Abstract:
... The oxidative addition of aryl halides to bipyridine- or phenanthroline-ligated nickel(I) is a commonly proposed step in nickel catalysis. However, there is a scarcity of complexes of this type that both are well-defined and undergo oxidative addition with aryl halides, hampering organometallic studies of this process. We report the synthesis of a well-defined Ni(I) complex, [(Cᴼ²ᴱᵗbpy)NiᴵCl]₄ (1) ...
DOI:
10.1021/jacs.2c00462

11. Electrochemical incorporation of heteroatom into surface reconstruction induced Ni vacancy of NixO nanosheet for enhanced water oxidation

Author:
Weiji Dai; Yin'an Zhu; Yike Ye; Ye Pan; Tao Lu; Saifang Huang
Source:
Journal of colloid and interface science 2022 v.608 pp. 3030-3039
ISSN:
0021-9797
Subject:
nickel; nickel oxide,   etc   ; Gibbs free energy; density functional theory; electrochemistry; electrodes; foams; nanorods; nanosheets; oxidation; oxygen production;     Show all 11 Subjects
Abstract:
... Surface reconstruction of non-oxide oxygen evolution reaction (OER) electrocatalysts has been intensively studied to improve their catalytic performances. However, further modification of the reconstructed active surfaces for better catalytic performances has not been reported. In this work, NiSe nanorods are prepared on nickel foam (NiSe@NF) as the pre-catalyst for electrochemical OER. It is reve ...
DOI:
10.1016/j.jcis.2021.11.026

12. Free-Standing Electrode of Core–Shell-Structured NiO@Co₃S₄ for High-Performance Hybrid Zn–Co/Air Batteries

Author:
Wenxu Shang; Wentao Yu; Xu Xiao; Yanyi Ma; Yi He; Peng Tan
Source:
Energy & fuels 2022 v.36 no.2 pp. 1121-1128
ISSN:
1520-5029
Subject:
nickel; nickel oxide,   etc   ; batteries; cobalt; electric potential difference; electrical conductivity; electrochemistry; electrodes; energy density; energy efficiency; oxygen;     Show all 11 Subjects
Abstract:
... Hybrid Zn batteries, which couple two electrochemical reactions in one cell, attract research interests owing to the combination of high energy density and energy efficiency, and the electrode material is usually focused on metal oxides, such as nickel and cobalt oxides, which are restricted by the poor electric conductivity and limited cycling stability. In this work, a free-standing NiO@Co₃S₄ el ...
DOI:
10.1021/acs.energyfuels.1c04059

13. Nickel and Its Oxide-Modified Biochar for Enhanced Removal of Ammonia: Theoretical Study and Practical Application

Author:
Chao Gao; Zhonglong Yin; Zifan Liu; Zepeng Zhang; Zhen Yang; Weiben Yang
Source:
Water, air, and soil pollution 2022 v.233 no.6 pp. 183
ISSN:
0049-6979
Subject:
nickel; nickel oxide,   etc   ; adsorbents; adsorption; air; ammonia; biochar; corn straw; formaldehyde; pyrolysis; soil pollution; surface area; toluene; water;     Show all 14 Subjects
Abstract:
... A series of metal- and metal oxide-modified biochars were prepared to remove ammonia (NH₃). Maize straw was used as the precursor to fabricate biochar, four kinds of biochar with different metal modification were prepared by impregnation method, and the part of metal on the surface of biochar was converted to metal oxide after secondary pyrolysis. It was found that adsorption capacity of BC-Ni–O o ...
DOI:
10.1007/s11270-022-05656-z

14. A Freundlich‐type multi‐component approach for modeling the sorption of nickel and phosphate in soil

Author:
Joshua T. Padilla; Lewis A. Gaston; H. Magdi Selim
Source:
Soil Science Society of America journal 2022 v.86 no.3 pp. 664-677
ISSN:
0361-5995
Subject:
nickel,   etc   ; kinetics; phosphates; soil; solutes; sorption;     Show all 6 Subjects
Abstract:
... In this study, the effect of phosphate on Ni sorption by Mahan soil was investigated. In batch experiments, an initial solution concentration of 1 mM phosphate increased Ni sorption by 15.1%, and initial concentrations of 1 mM Ni increased phosphate sorption by 12.8%. The effect of phosphate on Ni sorption, and vice versa, was dependent on initial concentrations of either solute, with greater effe ...
DOI:
10.1002/saj2.20391

15. Direct Laser Writing of Microscale Metal Oxide Gas Sensors from Liquid Precursors

Author:
Alexander C. Castonguay; Ning Yi; Bowen Li; Jiang Zhao; Han Li; Yuyan Gao; Nabila N. Nova; Naveen Tiwari; Lauren D. Zarzar; Huanyu Cheng
Source:
ACS applied materials & interfaces 2022 v.14 no.24 pp. 28163-28173
ISSN:
1944-8252
Subject:
nickel oxide,   etc   ; acetone; ethanol; liquids; nanocrystals;     Show all 5 Subjects
Abstract:
... Fabrication and processing approaches that facilitate the ease of patterning and the integration of nanomaterials into sensor platforms are of significant utility and interest. In this work, we report the use of laser-induced thermal voxels (LITV) to fabricate microscale, planar gas sensors directly from solutions of metal salts. LITV offers a facile platform to directly integrate nanocrystalline ...
DOI:
10.1021/acsami.2c03561

16. Divergent Regioselective Csp²–H Difluoromethylation of Aromatic Amines Enabled by Nickel Catalysis

Author:
Quan Gou; Qianqiong Chen; Qiujian Tan; Minghong Zhu; Huisheng Huang; Mengjiao Deng; Wei Yi; Shuhua He
Source:
Organic letters 2022 v.24 no.19 pp. 3549-3554
ISSN:
1523-7052
Subject:
nickel,   etc   ; catalytic activity; ligands; phosphine; regioselectivity;     Show all 5 Subjects
Abstract:
... Herein, the first catalytic protocol for nickel-catalyzed ortho or para position difluoromethylation of various aromatic amines has been developed with the assistance of a bidentate phosphine ligand, offering an invaluable synthesis means to construct extensive p-difluoromethylated products and difluorooxindole derivatives with significant functional fragments. Furthermore, the gram-scale reaction ...
DOI:
10.1021/acs.orglett.2c01262

17. Ligand-Promoted Nickel-Catalyzed para-Selective Carboxylation of Anisoles

Author:
Guangliang Tu; Guodong Ju; Shun-Jun Ji; Yingsheng Zhao
Source:
Organic letters 2022 v.24 no.11 pp. 2155-2159
ISSN:
1523-7052
Subject:
nickel,   etc   ; benzene; carboxylation; catalysts; free radicals;     Show all 5 Subjects
Abstract:
... It has always been a challenge in free radical chemistry to control site selectivity during the reaction of free radicals with aromatic rings. Herein, we report the site-selective carboxylation of anisoles through the direct reaction of the bromoform radical with a benzene ring at the para position under the assistance of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline with nickel(II) as the catalys ...
DOI:
10.1021/acs.orglett.2c00417

18. Nickel-adsorbed two-dimensional Nb₂C MXene for enhanced energy storage applications

Author:
Ayesha Zaheer; Syedah Afsheen Zahra; Muhammad Z. Iqbal; Asif Mahmood; Salem Ayaz Khan; Syed Rizwan
Source:
RSC advances 2022 v.12 no.8 pp. 4624-4634
ISSN:
2046-2069
Subject:
nickel,   etc   ; capacitance; electrochemical capacitors; electrochemistry; energy;     Show all 5 Subjects
Abstract:
... Owing to the tremendous energy storage capacity of two-dimensional transition metal carbides (MXenes), they have been efficiently utilized as a promising candidate in the field of super-capacitors. The energy storage capacity of MXenes can be further enhanced using metal dopants. Herein, we have reported the synthesis of pristine and nickel doped niobium-carbide (Nb₂C) MXenes, their computational ...
DOI:
10.1039/d2ra00014h

19. Self-Assembled Donor–Acceptor Dyad Molecules Stabilize the Heterojunction of Inverted Perovskite Solar Cells and Modules

Author:
Haoran Liu; Kangrong Yan; Jack Rao; Zeng Chen; Benfang Niu; Yanchun Huang; Huanxin Ju; Buyi Yan; Jizhong Yao; Haiming Zhu; Hongzheng Chen; Chang-Zhi Li
Source:
ACS applied materials & interfaces 2022 v.14 no.5 pp. 6794-6800
ISSN:
1944-8252
Subject:
nickel oxide,   etc   ; iodides; lighting; photostability; semiconductors;     Show all 5 Subjects
Abstract:
... The heterointerface between a semiconducting metal oxide and a perovskite critically impacts on the overall performance of perovskite solar cells (PVSCs). Herein, we report a feasible yet effective strategy to suppress the interfacial reaction between nickel oxide and the perovskite via chemical passivation with self-assembled dyad molecules, which leads to the simultaneous improvement of the powe ...
DOI:
10.1021/acsami.1c22396

20. A Route to 5,5-Dithiospiroketals and to Long-Chain Monomers from the Biomass

Author:
Valentin S. Dorokhov; Béatrice Quiclet-Sire; Samir Z. Zard
Source:
Organic letters 2022 v.24 no.15 pp. 2878-2882
ISSN:
1523-7052
Subject:
nickel,   etc   ; acetone; alkenes; biomass; diamines; glycols; sulfur;     Show all 7 Subjects
Abstract:
... 5,5-Dithiospiroketals are prepared by a double radical addition of α,α′-bisxanthyl acetone to an alkene followed by ionic or thermal cleavage of the xanthate groups and acid-catalyzed ring closure. A modification employs α-chloro-α′-xanthyl acetone to give unsymmetrical derivatives. Reductive removal of the sulfur atoms with Raney nickel furnishes long-chain α,ω-diacids, diols, and diamines. Using ...
DOI:
10.1021/acs.orglett.2c00855