Graphene@metal sulfide/oxide nanocomposites as novel photo‐Fenton‐like catalysts for 4‐nitrophenol degradation

2021 ◽  
Author(s):  
Renata Matos ◽  
Marta Nunes ◽  
Iwona Kuźniarska-Biernacka ◽  
Mariana Rocha ◽  
Alexandra Guedes ◽  
...  
Keyword(s):  
Metal Sulfide ◽  
Nitrophenol Degradation

Native Metal Sulfide Mineralization of Perga Ore Knot (the Ukrainian Shield)

2017 ◽  
Vol 39 (4) ◽  
pp. 77-88
Author(s):  
B. SLOBODYAN ◽  
V. PAVLYSHYN ◽  
S. BONDARENKO ◽  
L. STEPANYUK ◽  
V. SYOMKA ◽  
...  
Keyword(s):  
Metal Sulfide ◽  
Ukrainian Shield ◽  
Sulfide Mineralization ◽  
Native Metal

scholarly journals Preparation and photocatalytic performance of metallic Nb0.9Ta0.1S2/2D-C3N4 composite

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Hanxiang Chen ◽  
Jianjian Yi ◽  
Zhao Mo ◽  
Yanhua Song ◽  
Wenshu Yang ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Low Cost ◽  
Metal Sulfide ◽  
Electron Hole ◽  
Practical Applications ◽  
Energy And Environment ◽  
Photocatalytic Application ◽  
Light Utilization ◽  
Ternary Metal ◽  
Key Issues

Abstract Photocatalysis technology has potential application in the field of energy and environment. How to expand visible light utilization and promote the separation efficiency of the carriers are the key issues for the high active photocatalysts preparation and future practical applications. In this work, a ternary metal sulfide Nb0.9Ta0.1S2 was prepared and used as an electron collector in the photocatalytic application. As a result, the generated electrons are quickly transferred to the surface of the composite to participate in the reaction. It was demonstrated that the photocatalytic activity of 2D-C3N4 was enhanced after the modification of Nb0.9Ta0.1S2. The Nb0.9Ta0.1S2/2D-C3N4 composite material was synthesized by solvothermal method. The composition of 5% Nb0.9Ta0.1S2/2D-C3N4 showed the highest H2 evolution rate of 1961.6 μmolg−1h−1, which was 6.6 times that of 2D-C3N4. The 15% Nb0.9Ta0.1S2/2D-C3N4 exhibited the best activity in Rhodamine B degradation rate of 97% in 2 h, which is 50% higher than that of 2D-C3N4. Nb0.9Ta0.1S2/2D-C3N4 can be used as electron trap to promote the effective separation of electron–hole pairs. This work provides benchmarks in exploring low-cost and efficient cocatalyst.

Facile Seed-Mediated Growth of Ultrathin AuCu Shells on Pd Nanocubes and Their Enhanced Nitrophenol Degradation Reactions

2021 ◽  
Author(s):  
Siva Kumar Krishnan ◽  
Rodrigo Esparza ◽  
Daniel Bahena Uribe ◽  
Sundeep Mukherjee ◽  
Umapada Pal
Keyword(s):  
Degradation Reactions ◽  
Seed Mediated ◽  
Nitrophenol Degradation

scholarly journals UV/Vis-Based Persulphate Activation for p-Nitrophenol Degradation

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 480
Author(s):  
Valentin Dubois ◽  
Carmen S. D. Rodrigues ◽  
Ana S. P. Alves ◽  
Luis M. Madeira
Keyword(s):  
Reaction Time ◽  
Oxidation Process ◽  
Activation Process ◽  
Direct Photolysis ◽  
Simulated Solar Light ◽  
Uv Visible ◽  
Oxidation Efficiency ◽  
Nitrophenol Degradation ◽  
Persulphate Oxidation ◽  
Radiation Type

In the present work, the degradation of p-nitrophenol (PNP) and its mineralization by a UV/Vis-based persulphate activation process was investigated. Firstly, a screening of processes as direct photolysis, persulphate alone and persulphate activated by radiation was performed. The incidence of radiation demonstrated to have an important role in the oxidant activation, allowing to achieve the highest PNP and total organic carbon (TOC) removals. The maximum PNP oxidation (100%) and mineralization (61.6%)—both after 2 h of reaction time—were reached when using T = 70 °C, (S2O82−) = 6.4 g/L and I = 500 W/m2. The influence of radiation type (ultraviolet/visible, visible or simulated solar light) was also evaluated, being found that the source with the highest emission of ultraviolet radiation (UV/visible) allowed to achieve the best oxidation efficiency; however, solar radiation also reached very-good performance. According to quenching experiments, the sulphate radical is key in the activated persulphate oxidation process, but the hydroxyl radical also plays an important role.

scholarly journals Selective Growth of Metal Sulfide, Metal, and Metal-Alloy on 2D CdS Nanoplates

2020 ◽  
Vol 6 ◽  
Author(s):  
Helena Fridman ◽  
Liang Tian ◽  
Karam Shreteh ◽  
Michael Volokh ◽  
Taleb Mokari
Keyword(s):  
Metal Sulfide ◽  
Selective Growth ◽  
Metal Alloy

Safe all-solid-state potassium batteries with three dimentional, flexible and binder-free metal sulfide array electrode

2019 ◽  
Vol 433 ◽  
pp. 226697 ◽  
Author(s):  
Huifang Fei ◽  
Yining Liu ◽  
Yongling An ◽  
Xiaoyan Xu ◽  
Jinyang Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Metal Sulfide ◽  
Array Electrode ◽  
Binder Free ◽  
Free Metal

ZnO nanorods decorated with metal sulfides as stable and efficient counter-electrode materials for high-efficiency quantum dot-sensitized solar cells

2016 ◽  
Vol 4 (21) ◽  
pp. 8161-8171 ◽  
Author(s):  
Chandu V. V. M. Gopi ◽  
Mallineni Venkata-Haritha ◽  
Young-Seok Lee ◽  
Hee-Je Kim
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Counter Electrode ◽  
Electrode Materials ◽  
High Efficiency ◽  
Zno Nanorods ◽  
Metal Sulfide ◽  
Metal Sulfides ◽  
Sensitized Solar Cells

Metal sulfide decorated with ZnO NRs (ZnO/CoS, ZnO/NiS, ZnO/CuS and ZnO/PbS) were fabricated and used as efficient CEs for QDSSCs.

scholarly journals Atomic Layer Deposition of Metal Sulfide Materials

2015 ◽  
Vol 48 (2) ◽  
pp. 341-348 ◽  
Author(s):  
Neil P. Dasgupta ◽  
Xiangbo Meng ◽  
Jeffrey W. Elam ◽  
Alex B. F. Martinson
Keyword(s):  
Atomic Layer Deposition ◽  
Metal Sulfide ◽  
Atomic Layer ◽  
Layer Deposition
Sign in / Sign up

Export Citation Format

Share Document