efficient gold impacydrocyclone for

Efficient gold recovery from waste electronic and electric …

The amino-functionalized covalent triazine frameworks (NH 2-CTFs) were prepared for gold recovery from waste electronic and electric equipment.. NH 2-CTFs with high porosity and good thermal stability exhibit excellent gold recovery performance.. The gold ions can be in situ reduced into gold nanoparticles by NH 2-CTFs and the purity of …

A Highly Efficient Gold-Catalyzed Photoredox α-C (sp (3)) …

A new α-C(sp(3))H alkynylation of unactivated tertiary aliphatic amines with 1-iodoalkynes as radical alkynylating reagents in the presence of [Au2(μ-dppm)2](2+) in sunlight provides propargylic amines. Based on mechanistic studies, a C-C coupling of an α-aminoalkyl radical and an alkynyl radical is …

Gold imidazolium-based ionic liquids, efficient catalysts for

Ionic liquid stabilized gold(iii) chloride is shown to be a very active catalyst in the cyclization of sterically hindered and unhindered acetylenic carboxylic acid substrates even in the …

Utilizing cost-effective pyrocarbon for highly efficient gold …

The developed pyrocarbon demonstrates remarkable efficiency as a gold sorbent, exhibiting a high recovery capacity (2829.7 mg g −1), exceptional gold …

Efficient gold recovery from low concentrated Au (S

1. Introduction. Gold (Au), as an indispensable precious metal, has been massively applied in jewelry fabrication, medicine field and electronic product [[1], [2], [3]].Besides natural mineral, urban mine is also regarded as important source to obtain gold because of increased generation of electronic waste (e-waste) recently [4].Up to date, cyanide …

Efficient gold scavenging by iron sulfide colloids in an …

Invisible gold hosted by pyrite represents a large proportion of gold resources worldwide. Gold is enriched in pyrite relative to hydrothermal fluids by five orders of magnitude, but controls on the hyperenrichment of gold in pyrite remain unclear. Here, we present the first micrometer- to nanometer-scale evidence for a colloidal iron sulfide …

Three Birds with One Sulfur: Construction of Sulfur-Bridged …

Sulfur is a massive byproduct of the petrochemicals industry and hardly employed as a building block for porous organic polymers (POPs). Here, a new family of sulfur-bridged POPs has been prepared via a C–H insertion reaction between sulfur and polycyclic aromatic hydrocarbons. Sulfur works as a solvent, external cross-linker, and …

Efficient gold recovery by a thiazolyl covalent organic …

Here, we report a thiazoyl covalent organic framework, namely ECUT-COF-29, for gold recovery. Under visible light irradiation, this material can reduce Au 3+ to Au …

Metal-phenolic networks-engineered polyimide aerogels for …

An ideal gold recovery material entails diverse features, including (i) high adsorption capacity and selectivity capture of gold ions from a range of interfering metal ions [13], (ii) efficient reduction of gold ions (e.g., Au 3+ ions) and readily collection of elemental gold (Au 0) [14], and (iii) robustness against harsh conditions in the ...

Polythioamide-g-C3N4 for highly efficient and selective gold …

DOI: 10.1016/j.rnrec.2023.107165 Corpus ID: 260755551; Polythioamide-g-C3N4 for highly efficient and selective gold recovery @article{Zhou2023PolythioamidegC3N4FH, title={Polythioamide-g-C3N4 for highly efficient and selective gold recovery}, author={Hongjie Zhou and Wenjin Zhao and Shun Zhang and Xiaoqiang An and …

Efficient and Clean Gold‐Catalyzed One‐Pot Selective …

Atom-efficient direct N-alkylation: An environmentally clean one-pot selective N-alkylation of amines with an equimolar amount of alcohols via a hydrogen autotransfer pathway was achieved over a titania-supported gold catalyst system in good to excellent yields without additive (see scheme).

Highly efficient and selective extraction of gold by reduced …

Highly efficient gold extraction by rGO. The rGO was obtained by chemical reduction of commercial, mass-produced graphene oxide (GO) nanosheets using ascorbic acid as a reductant (Methods).

Efficient gold recovery from waste SIM cards by …

It is noteworthy that the gold content in e-waste is exceptionally high (280 g·t −1), with its recycling value surpassing that of traditional gold mines (3–30 g·t −1) [3]. Hence, extracting gold from e-waste is particularly essential to address resource shortage and mitigate environmental challenges.

Modulating Skeletons of Covalent Organic Framework for High-Efficiency

Covalent organic frameworks (COFs) have attracted considerable attention as adsorbents for capturing and separating gold from electronic wastes. To enhance the binding capture efficiency, constructing hydrogen-bond nanotraps along the pore walls was one of the most widely adopted approaches. However …

Edikan Gold Mine, Ghana

Edikan gold mine (EGM) is a large-scale, low-grade conventional open-pit mine located in the Ashanti Gold Belt of Ghana, West Africa.

Efficient Gold Recovery from E-Waste via a Chelate …

Extracting gold from wastes of electronic equipment (e-waste) is a sustainable strategy for the recovery of the precious metal, reducing environmental pollution, and addressing the growing demands for gold resources. In this work, we synthesized a thiourea-modified porous aromatic framework (PAF-1-thiourea) with …

Gold nanoparticle coatings as efficient adenovirus carriers …

Gold nanoparticle coatings as efficient adenovirus carriers to non-infectable stem cells RSC Adv. 2019 Jan 10;9(3) :1327-1334. ... Our data showed that the use of positively charged 14 nm gold nanoparticles either functionalized with arginine-glycine-aspartate (RGD) motif or not, increases the efficiency of adenovirus infection in …

A Highly Efficient Gold-Catalyzed Photoredox α-C (sp

A new α-C(sp 3) H alkynylation of unactivated tertiary aliphatic amines with 1-iodoalkynes as radical alkynylating reagents in the presence of [Au 2 (μ-dppm) 2] 2+ in sunlight provides propargylic amines. Based on mechanistic studies, a C C coupling of an α-aminoalkyl radical and an alkynyl radical is proposed for the C(sp 3) C(sp) bond formation.

Supporting Information Activated Carbon Efficient Gold …

Efficient Gold Recovery from Cyanide Solution Using Magnetic Activated Carbon. Jinsong Xia, Harshit Mahandra*, Ahmad Ghahreman*

Gold-Platinum Nanoparticles with Core-Shell Configuration as Efficient …

Gold-Platinum Nanoparticles with Core-Shell Configuration as Efficient Oxidase-like Nanosensors for Glutathione Detection Nanomaterials (Basel). ... In this work, we have synthetized a gold-platinum Au@Pt nanoparticle with core-shell configuration exhibiting a remarkable oxidase-like mimicking activity towards the substrates 3,3',5,5 ...

Efficient gold recovery by a thiazolyl covalent organic …

Here, we report a thiazoyl covalent organic framework, namely ECUT-COF-29, for gold recovery. Under visible light irradiation, this material can reduce Au3+ to Au0 in a short time, and the adsorption capacity is as high as 3714 mg g−1, showing great potential in gold recovery.

Golden Pickaxe – Minecraft Wiki

Efficiency: Increases the mining speed. V Enchanting Table Anvil: 10 Fortune: Increases the amount of drops when mining. III Enchanting Table Anvil: 2 ... Give a piglin a gold item while it is aggressive toward the player. 30G: Silver: Advancements [edit | edit source] Icon Advancement In-game description Actual requirements (if different)

Gold-YOLO: Efficient Object Detector via Gather-and …

Gold-YOLO: Efficient Object Detector via Gather-and-Distribute Mechanism. Part of Advances in Neural Information Processing Systems 36 (NeurIPS 2023) ... Gold-YOLO-N attains an outstanding 39.9% AP on the COCO val2017 datasets and 1030 FPS on a T4 GPU, which outperforms the previous SOTA model YOLOv6-3.0-N with similar FPS by …

Porous gold layer coated silver nanoplates with efficient

Porous gold layer coated silver nanoplates with efficient antimicrobial activity Colloids Surf B Biointerfaces. 2020 Feb;186:110727. doi: 10.1016/j.colsurfb.2019.110727. Epub 2019 Dec 13. Authors Jianfeng Zhu 1 ...

Modulating Skeletons of Covalent Organic Framework for High‐Efficiency

Efficient gold capture from wastewater by NH2-MIL-125 …

1. Introduction. Gold as a precious metal is increasingly used in all professions, such as electronics manufacture [1], medical devices [2], catalysts [3] and other industrial production, due to its superior physicochemical properties like efficient conductivity, corrosion resistance, superior ductility and high catalytic activity [4].Nevertheless, …

Efficient gold scavenging by iron sulfide colloids in an …

Here, we provide compelling evidence for the presence of iron sulfide colloids in chalcedony that hosts fine-grained spherical gold-rich pyrite aggregates …

Improved Strain Transfer Efficiency in Large-Area Two …

We have shown that the gold-assisted exfoliation of MoS 2 on flexible substrates enables the fabrication of large MoS 2 layers with effective strain transfer capabilities. In fact, using a gold interfacial layer improves the efficiency of the strain transfer as a result of the strong interaction and bonding between Au and MoS 2. …

Concentration-dependent photothermal conversion efficiency of gold

The photothermal conversion efficiency of gold different nanoparticles (GNPs) in different concentrations (1.25-20 µg/mL) and at different irradiation intensities of near-infrared (NIR) broadband and NIR laser irradiation is evaluated. Results show that for a concentration of 20.0 µg/mL, 40 nm gold nanospheres, 25 × 47 nm gold nanorods …