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1. Near-infrared vapochromism in lipid-packaged mixed-valence coordination polymers

Author:
Yuki Nagai; Masa-aki Morikawa; Nobuo Kimizuka
Source:
Chemical communications 2022 v.58 no.13 pp. 2112-2115
ISSN:
1364-548X
Subject:
platinum,   etc   ; crystallization; lipids; vapors;     Show all 4 Subjects
Abstract:
... Reversible vapochromism in the NIR region is achieved for a mixed-valence platinum complex with lipid counterions, from which exclusion of crystallization water by organic vapor alters the lipid molecular orientation, which amplifies the information to changes in the 1D coordination structure and the electronic state. ...
DOI:
10.1039/d1cc06723k

2. Biosorption for the recovery and analysis of rare earth elements and platinum group metals from real samples. A review

Author:
Lavinia Tofan; Carmen-Nicoleta Bojoaga; Carmen Paduraru
Source:
Environmental chemistry letters 2022 v.20 no.2 pp. 1225-1248
ISSN:
1610-3653
Subject:
platinum,   etc   ; biomass; biosorbents; biosorption; wastes;     Show all 5 Subjects
Abstract:
... The increasing demand of rare earth elements and platinum group metals requires alternative approaches for their recycling from waste. Decades of fundamental laboratory research on biosorption area have emphasised that bio-based materials (biosorbents) display high and versatile potential of metal preconcentration. However, the transposition of this potential into successful practical strategies f ...
DOI:
10.1007/s10311-021-01330-8

3. Controlled polymerization of metal complex monomers – fabricating random copolymers comprising different metal species and nano-colloids

Author:
Shigehito Osawa; Sosuke Kurokawa; Hidenori Otsuka
Source:
Chemical communications 2022 v.58 no.34 pp. 5273-5276
ISSN:
1364-548X
Subject:
platinum,   etc   ; composite polymers; copolymerization; zinc;     Show all 4 Subjects
Abstract:
... Acrylate monomers with metal complexes were designed to build polymer metal complexes. The ideal copolymerization of monomers with zinc and platinum was performed to obtain random copolymers with a feeding metal composition. The successful nano-colloid preparation from the polymers further highlighted the potential of the method for building multimetallic materials. ...
DOI:
10.1039/d1cc07265j

4. Formation and selected catalytic properties of ruthenium, rhodium, osmium and iridium nanoparticles

Author:
Jan Krajczewski; Robert Ambroziak; Andrzej Kudelski
Source:
RSC advances 2022 v.12 no.4 pp. 2123-2144
ISSN:
2046-2069
Subject:
platinum,   etc   ; catalytic activity; iridium; osmium; rhodium; ruthenium;     Show all 6 Subjects
Abstract:
... The synthesis and applications of nanoparticles formed from various platinum-group metals have been intensively investigated for many years because such systems have many important commercial applications, mainly as heterogeneous catalysts. Because of the very large number of data concerning nanoparticles of the platinum-group metals, in this review we focus only on nanoparticles formed from less ...
DOI:
10.1039/d1ra07470a

5. Green fabrication of Pt nanoparticles via tea-polyphenols for hydrogen peroxide detection

Author:
Hui Hu; Fengxia Wang; Xu Ding; Sarah Imhanria; Wei Wang; Ji Zhang
Source:
Colloids and surfaces 2022 v.637 pp. 128201
ISSN:
0927-7757
Subject:
platinum,   etc   ; electrochemistry; enzymes; hydrogen peroxide; polyphenols; tea;     Show all 6 Subjects
Abstract:
... To address the environmental hazards associated with traditional chemicals in fabricating metal nanoparticles, greener synthetic method using plant-derived material would be a good choice. In this study, platinum nanoparticles (Pt NPs) were greenly fabricated by tea polyphenol (Tp) and applied in hydrogen peroxide (H₂O₂) detection. As-prepared Pt NPs have been characterized by a series of analysis ...
DOI:
10.1016/j.colsurfa.2021.128201

6. Efficient extraction of critical elements from end-of-life automotive catalytic converters via alkaline pretreatment followed by leaching with a complexing agent

Author:
Nazanin Bahaloo-Horeh; Seyyed Mohammad Mousavi
Source:
Journal of cleaner production 2022 v.344 pp. 131064
ISSN:
0959-6526
Subject:
platinum,   etc   ; alkali treatment; oxalic acid; pulp; temperature; wastes;     Show all 6 Subjects
Abstract:
... Spent automotive catalytic converters are one of the fastest-growing waste streams that could be considered as a potential industrially demanded source of platinum group metals (PGMs), rare earth metals (REEs), and other critical elements. In this research, an integrated recycling approach was proposed based on the characteristics of the waste and its refractory nature. The proposed process focuse ...
DOI:
10.1016/j.jclepro.2022.131064

7. Colloidal Platinum–Copper Nanocrystal Alloy Catalysts Surpass Platinum in Low-Temperature Propene Combustion

Author:
Nadia Tahsini; An-Chih Yang; Verena Streibel; Baraa Werghi; Emmett D. Goodman; Aisulu Aitbekova; Simon R. Bare; Yuejin Li; Frank Abild-Pedersen; Matteo Cargnello
Source:
Journal of the American Chemical Society 2022 v.144 no.4 pp. 1612-1621
ISSN:
1520-5126
Subject:
platinum,   etc   ; alloys; catalytic activity; combustion; nanocrystals; palladium; propylene; steam;     Show all 8 Subjects
Abstract:
... Low-temperature removal of noxious environmental emissions plays a critical role in minimizing the harmful effects of hydrocarbon fuels. Emission-control catalysts typically consist of large quantities of rare, noble metals (e.g., platinum and palladium), which are expensive and environmentally damaging metals to extract. Alloying with cheaper base metals offers the potential to boost catalytic ac ...
DOI:
10.1021/jacs.1c10248

8. Heterostructured Ceria–Titania-Supported Platinum Catalysts for the Water Gas Shift Reaction

Author:
Xiao-Meng Lai; Qi Xiao; Chao Ma; Wei-Wei Wang; Chun-Jiang Jia
Source:
ACS applied materials & interfaces 2022 v.14 no.6 pp. 8575-8586
ISSN:
1944-8252
Subject:
platinum,   etc   ; adsorption; catalysts; catalytic activity; fuel cells; hydrogen production;     Show all 6 Subjects
Abstract:
... The water gas shift (WGS) reaction is a key process in the industrial hydrogen production and the development and application of the proton exchange membrane fuel cell. Metal oxide-supported highly dispersed Pt has been proved as an efficient catalyst for the WGS reaction. In this work, a series of supported 0.5Pt/xCe–10Ti (x = 1, 3, or 5) catalysts with different Ce/Ti molar ratios were prepared ...
DOI:
10.1021/acsami.1c22795

9. Highly Dispersed Platinum Chlorine Atoms Anchored on Gold Quantum Dots for a Highly Efficient Electrocatalyst

Author:
Lan Hui; Xueting Zhang; Yurui Xue; Xi Chen; Yan Fang; Chengyu Xing; Yuxin Liu; Xuchen Zheng; Yuncheng Du; Chao Zhang; Feng He; Yuliang Li
Source:
Journal of the American Chemical Society 2022 v.144 no.4 pp. 1921-1928
ISSN:
1520-5126
Subject:
platinum,   etc   ; catalysts; catalytic activity; chlorine; ethanol; gold; methanol; oxidation;     Show all 8 Subjects
Abstract:
... The development of efficient and durable electrocatalysts is the only way to achieve commercial fuel cells. A new, efficient method was utilized for epitaxial growth of gold quantum dots using atomically platinum chlorine species with porous graphdiyne as a support (PtCl₂Au(111)/GDY), for obtaining successful multicomponent quantum dots with a size of 2.37 nm. The electrocatalyst showed a high mas ...
DOI:
10.1021/jacs.1c12310

10. Impact of sp² carbon material species on Pt nanoparticle-based electrocatalysts produced by one-pot pyrolysis methods with ionic liquids

Author:
Yu Yao; Qingning Xiao; Masafumi Kawaguchi; Tetsuya Tsuda; Hirohisa Yamada; Susumu Kuwabata
Source:
RSC advances 2022 v.12 no.22 pp. 14268-14277
ISSN:
2046-2069
Subject:
platinum,   etc   ; carbon; carbon nanotubes; catalysts; durability; electrochemistry; nanocomposites; pyrolysis;     Show all 8 Subjects
Abstract:
... Pt-nanoparticle-supported graphene nanoplatelets (Pt/GNPs) and multiwalled carbon nanotube composite (Pt/MWCNTs) electrocatalysts for the oxygen reduction reaction (ORR) can be prepared using a one-pot method through the pyrolytic decomposition of the platinum precursor, platinum(ii) bis(acetylacetonate) (Pt(acac)₂) in 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide ([C₄mim][Tf₂N]) o ...
DOI:
10.1039/d2ra01330d

11. Seamless separation of OHₐd and Hₐd on a Ni–O catalyst toward exceptional alkaline hydrogen evolution

Author:
Jiangtian Li; Deryn Chu; David R. Baker; Rongzhong Jiang
Source:
Journal of materials chemistry A 2022 v.10 no.3 pp. 1278-1283
ISSN:
2050-7496
Subject:
platinum,   etc   ; adsorption; catalysts; desorption; dissociation; hydrogen production; oxygen; synergism;     Show all 8 Subjects
Abstract:
... Seamless separation of intermediates (OHₐd and Hₐd) to different active sites at the atomic scale is realized on a Ni–O catalyst that is functionalized with low-coordinated oxygen and abundant vacancies. During alkaline hydrogen evolution reaction (HER), the former enables active states for Hₐd adsorption/desorption; meanwhile, nearby Niᵟ⁺ vacancies allow an optimal interaction with OHₐd. Conseque ...
DOI:
10.1039/d1ta07303f

12. Oxygen Reduction Reaction in Alkaline Media Causes Iron Leaching from Fe–N–C Electrocatalysts

Author:
Yu-Ping Ku; Konrad Ehelebe; Andreas Hutzler; Markus Bierling; Thomas Böhm; Andrea Zitolo; Mykhailo Vorokhta; Nicolas Bibent; Florian D. Speck; Dominik Seeberger; Ivan Khalakhan; Karl J. J. Mayrhofer; Simon Thiele; Frédéric Jaouen; Serhiy Cherevko
Source:
Journal of the American Chemical Society 2022 v.144 no.22 pp. 9753-9763
ISSN:
1520-5126
Subject:
platinum,   etc   ; atomic absorption spectrometry; catalysts; durability; electrochemistry; electrodes; longevity; oxygen;     Show all 8 Subjects
Abstract:
... The electrochemical activity of modern Fe–N–C electrocatalysts in alkaline media is on par with that of platinum. For successful application in fuel cells (FCs), however, also high durability and longevity must be demonstrated. Currently, a limited understanding of degradation pathways, especially under operando conditions, hinders the design and synthesis of simultaneously active and stable Fe–N– ...
DOI:
10.1021/jacs.2c02088

13. Contamination of roadside soils by metals linked to catalytic converters in Rio De Janeiro, Brazil

Author:
Cassiano A. R. Bernardino; Claudio F. Mahler; Ricardo E. Santelli; Bernardo F. Braz; Renata C. Borges; Julia O. Fernandes; Anna C. S. Gomes; Fernando H. Cincotto; Luís A. B. Novo
Source:
Environmental forensics 2022 v.23 no.1-2 pp. 221-233
ISSN:
1527-5930
Subject:
platinum,   etc   ; automobiles; organic matter; pH; population density; roadsides; traffic; urbanization; Brazil;     Show all 9 Subjects
Abstract:
... The contamination of soils due to traffic-related activities has been an ever-growing concern since the mid-20th century. This global issue impacts both rural soils often used for agriculture and grazing, and urban soils in densely populated urban areas. Therefore, this work aimed to evaluate the distribution of catalytic converters-related elements (Pd, Pt, Rh, Mo, and Ni) in roadside soils from ...
DOI:
10.1080/15275922.2021.1892875

14. Enhancement of the hydrodesulfurization and C−S bond cleavage activities of rhodium phosphide catalysts by platinum addition

Author:
Yasuharu Kanda; Ryo Saito; Taiki Ono; Kenichi Kon; Takashi Toyao; Shinya Furukawa; Yasushi Obora; Ken-ichi Shimizu
Source:
Journal of catalysis 2022 v.408 pp. 294-302
ISSN:
0021-9517
Subject:
platinum,   etc   ; X-ray diffraction; catalysts; catalytic activity; cleavage (chemistry); phosphides; rhodium;     Show all 7 Subjects
Abstract:
... To enhance the hydrodesulfurization (HDS) activity of SiO₂-supported Rh phosphide catalysts, various second metal-added Rh–P catalysts were developed; furthermore, the effect of the addition of the second metal on the HDS performance was examined. The second metals (M: Ru, Pt, and Ir) were selected as per the Sabatier principle. In situ X-ray diffraction revealed the formation of an Rh₂P phase in ...
DOI:
10.1016/j.jcat.2022.03.001

15. Platinum clusters anchored on sulfur-doped ordered mesoporous carbon for chemoselective hydrogenation of halogenated nitroarenes

Author:
Jianfeng Li; Shenglong Ding; Fushan Wang; Huacheng Zhao; Jingfang Kou; Muhammad Akram; Manhua Xu; Wu Gao; Chuang Liu; Huangruoyin Yang; Zhengping Dong
Source:
Journal of colloid and interface science 2022 pp. -
ISSN:
0021-9797
Subject:
platinum,   etc   ; carbon; catalytic activity; chemoselectivity; hydrogenation; nitroaromatic compounds; porous media; sulfur;     Show all 8 Subjects
Abstract:
... Chemoselective hydrogenation of unsaturated organic compounds is a significant research topic in the catalysis field. Herein, a sulfur-doped ordered mesoporous carbon (SMC) material was prepared to anchor ultrafine platinum (Pt) clusters for the chemoselective hydrogenation of halogenated nitroarenes. The confinement effect of the ordered pores and the strong metal-support interaction caused by Pt ...
DOI:
10.1016/j.jcis.2022.06.052

16. Synthesis of the C₇₀ Fragment Buckybowl, Homosumanene, and Heterahomosumanenes via Ring-Expansion Reactions from Sumanenone

Author:
Mikey Nishimoto; Yuta Uetake; Yumi Yakiyama; Fumitaka Ishiwari; Akinori Saeki; Hidehiro Sakurai
Source:
Journal of organic chemistry 2022 v.87 no.5 pp. 2508-2519
ISSN:
1520-6904
Subject:
platinum,   etc   ; X-ray diffraction; carbon; lactams; ligands; moieties; organic chemistry; pyridines;     Show all 8 Subjects
Abstract:
... Bowl-shaped aromatic molecules, buckybowls, are attractive molecules because of the unique properties derived from their curved-π scaffolds. Doping heteroatoms into buckybowl frameworks is a powerful method to change their structural and electronical properties. Herein, we report the synthesis of C₇₀ fragment buckybowl, homosumanene, and heterahomosumanenes having a lactone moiety and a lactam moi ...
DOI:
10.1021/acs.joc.1c02416

17. Electronic regulation of platinum species on metal nitrides realizes superior mass activity for hydrogen production

Author:
Kaixun Li; Yun Tong; Dongmei Feng; Pengzuo Chen
Source:
Journal of colloid and interface science 2022 v.622 pp. 410-418
ISSN:
0021-9797
Subject:
platinum,   etc   ; catalysts; durability; electrolytes; hydrogen; hydrogen production; industrial applications; nitrides; reaction kinetics;     Show all 9 Subjects
Abstract:
... Developing high-active electrocatalyst to improve the efficiency of hydrogen evolution reaction (HER) is critical to achieve clean hydrogen. However, the low mass activity and high cost of this technology still limits its wide commercial application. Herein, a new kind of hybrid material is designed by introducing trace Pt species onto a mixed metal nitride matrixs (denoted as NiWNₓ), presenting a ...
DOI:
10.1016/j.jcis.2022.04.130

18. Experimental Voltammetry Analyzed Using Artificial Intelligence: Thermodynamics and Kinetics of the Dissociation of Acetic Acid in Aqueous Solution

Author:
Haotian Chen; Danlei Li; Enno Kätelhön; Ruiyang Miao; Richard G. Compton
Source:
Analytical chemistry 2022 v.94 no.15 pp. 5901-5908
ISSN:
1520-6882
Subject:
platinum,   etc   ; acetates; acetic acid; analytical chemistry; aqueous solutions; artificial intelligence; thermodynamics; voltammetry;     Show all 8 Subjects
Abstract:
... Artificial intelligence (AI) is used to quantitatively analyze the voltammetry of the reduction of acetic acid in aqueous solution generating thermodynamic and kinetic data. Specifically, the variation of the steady-state current for the reduction of protons at a platinum microelectrode as a function of the bulk concentration of acetic acid is recorded and analyzed giving data in close agreement w ...
DOI:
10.1021/acs.analchem.2c00110

19. Janus bimetallic materials as efficient electrocatalysts for hydrogen oxidation and evolution reactions

Author:
Wanli Liang; Zhichen Le; Pengyu Dong; Zixuan Dan; Jiaxuan Chen; Hao Zhang; Jian Chen; Fangyan Xie; Nan Wang; Yanshuo Jin; Hui Meng
Source:
Journal of colloid and interface science 2022 v.625 pp. 128-135
ISSN:
0021-9797
Subject:
platinum,   etc   ; catalytic activity; electrodes; energy; hydrogen; hydrogen production; oxidation; reaction kinetics; synergism;     Show all 9 Subjects
Abstract:
... The development of hydrogen energy is limited by the high cost of platinum group metals (PGM). There is an urgent need to design efficient PGM-free electrocatalysts in the hydrogen electrode. Herein, Janus Ni/W bimetallic materials are proposed as an effective PGM-free bifunctional hydrogen electrocatalyst. By constructing the bimetallic materials, a synergistic effect is realized to enhance the r ...
DOI:
10.1016/j.jcis.2022.06.029

20. MnO2-shelled Doxorubicin/Curcumin nanoformulation for enhanced colorectal cancer chemo-immunotherapy

Author:
Jie Liu; Li Li; Bing Zhang; Zhi Ping Xu
Source:
Journal of colloid and interface science 2022 v.617 pp. 315-325
ISSN:
0021-9797
Subject:
platinum,   etc   ; cancer therapy; carcinogenesis; colorectal neoplasms; curcumin; doxorubicin; drug therapy; immunostimulants; manganese;     Show all 9 Subjects
Abstract:
... Metallodrug platinum compounds are indispensable components in the current standard combination for colorectal cancer treatment yet with severe additional adverse effects compromising the clinical outcomes. Having tumor microenvironment modulation and immunostimulatory effect, bio-compatible manganese (Mn) materials hold great promise for developing alternate metallodrug combination treatments. In ...
DOI:
10.1016/j.jcis.2022.02.132