Recent advances and rational design strategies of carbon dots towards highly efficient solar evaporation

Nanoscale ◽  
2021 ◽  
Author(s):  
Indriyati . ◽  
Indah Primadona ◽  
Fitri Aulia Aulia Permatasari ◽  
Muhammad Alief Irham ◽  
Dr. Eng. Muhamad nasir ◽  
...  
Keyword(s):  
Energy Source ◽  
Solar Energy ◽  
Water Scarcity ◽  
Carbon Dots ◽  
Rational Design ◽  
Feasible Solution ◽  
Environmentally Friendly ◽  
Design Strategies ◽  
Highly Efficient ◽  
Key Points

Solar evaporation using photothermal materials is an environmentally friendly and feasible solution to overcome the water scarcity issue by utilizing the abundant solar energy source. Some key points for efficient...

scholarly journals Rational design of photocatalysts for ammonia production from water and nitrogen gas

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Seokwoo Choe ◽  
Sung Min Kim ◽  
Yeji Lee ◽  
Jin Seok ◽  
Jiyong Jung ◽  
...  
Keyword(s):  
Energy Source ◽  
Rational Design ◽  
Future Research ◽  
Ammonia Production ◽  
Significant Progress ◽  
Nitrogen Gas ◽  
Research Directions ◽  
Effective Strategies ◽  
Future Research Directions ◽  
Made In

AbstractPhotocatalytic N2 reduction has emerged as one of the most attractive routes to produce NH3 as a useful commodity for chemicals used in industries and as a carbon-free energy source. Recently, significant progress has been made in understanding, exploring, and designing efficient photocatalyst. In this review, we outline the important mechanistic and experimental procedures for photocatalytic NH3 production. In addition, we review effective strategies on development of photocatalysts. Finally, our analyses on the characteristics and modifications of photocatalysts have been summarized, based on which we discuss the possible future research directions, particularly on preparing more efficient catalysts. Overall, this review provides insights on improving photocatalytic NH3 production and designing solar-driven chemical conversions.

Catalytic asymmetric hydrogenation reaction by in situ formed ultra-fine metal nanoparticles in live thermophilic hydrogen-producing bacteria

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Bing ◽  
Faming Wang ◽  
Yuhuan Sun ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Hydrogenation ◽  
Asymmetric Hydrogenation ◽  
Environmentally Friendly ◽  
Hydrogenation Reaction ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Live Bacteria ◽  
Catalytic Asymmetric Hydrogenation

An environmentally friendly biomimetic strategy has been presented and validated for the catalytic hydrogenation reaction in live bacteria. In situ formed ultra-fine metal nanoparticles can realize highly efficient asymmetric hydrogenation reactions.

scholarly journals Highly efficient reusable superhydrophobic sponge prepared by a facile, simple and cost effective biomimetic bonding method for oil absorption

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiaqi Wang ◽  
Yan Chen ◽  
Qinyao Xu ◽  
Miaomiao Cai ◽  
Qian Shi ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Absorption Capacity ◽  
Oil Absorption ◽  
Water Contact ◽  
Water Separation ◽  
Highly Efficient ◽  
Study Results ◽  
Different Types ◽  
Modification Method ◽  
Bonding Method

AbstractSuperhydrophobic sponges have considerable potential for oil/water separation. Most of the methods used for superhydrophobic modification of sponges require toxic or harmful solvents, which have the drawbacks of hazardous to environment, expensive, and complex to utilize. Moreover, the hydrophobic layer on the surface of sponge is often easily destroyed. In this paper, a highly efficient superhydrophobic sponge with excellent reusability was developed by using a facile, simple and environmentally friendly dopamine biomimetic bonding method. Different types of sponges, such as melamine, polyethylene or polyurethane sponge wastes, were used as raw materials to prepare superhydrophobic sponges, which possess the advantages of inexpensive and abundant. The effects of different dopamine polymerization time and different hydrophobic agent dosage on the hydrophobicity and oil absorption capacity of melamine sponges were optimized. The study results showed that the water contact angle of the superhydrophobic sponge could reach 153° with excellent organic solvent absorption capacity of 165.9 g/g. Furthermore, the superhydrophobic sponge retained approximately 92.1% of its initial absorption capacity after 35 reutilization cycles. More importantly, the dopamine biomimetic bonding superhydrophobic modification method can be used for different types of sponges. Therefore, a universally applicable, facile, simple and environmentally friendly superhydrophobic modification method for sponges was developed.

scholarly journals Burkholderia thailandensis E264 as a promising safe rhamnolipids’ producer towards a sustainable valorization of grape marcs and olive mill pomace

2021 ◽  
Author(s):  
Alif Chebbi ◽  
Massimiliano Tazzari ◽  
Cristiana Rizzi ◽  
Franco Hernan Gomez Tovar ◽  
Sara Villa ◽  
...  
Keyword(s):  
Energy Source ◽  
Olive Oil ◽  
Low Cost ◽  
Carbon Sources ◽  
Burkholderia Thailandensis ◽  
Rhamnolipid Production ◽  
Key Points ◽  
Wide Range ◽  
Long Chain ◽  
Olive Mill

Abstract Within the circular economy framework, our study aims to assess the rhamnolipid production from winery and olive oil residues as low-cost carbon sources by nonpathogenic strains. After evaluating various agricultural residues from those two sectors, Burkholderia thailandensis E264 was found to use the raw soluble fraction of nonfermented (white) grape marcs (NF), as the sole carbon and energy source, and simultaneously, reducing the surface tension to around 35 mN/m. Interestingly, this strain showed a rhamnolipid production up to 1070 mg/L (13.37 mg/g of NF), with a higher purity, on those grape marcs, predominately Rha-Rha C14-C14, in MSM medium. On olive oil residues, the rhamnolipid yield of using olive mill pomace (OMP) at 2% (w/v) was around 300 mg/L (15 mg/g of OMP) with a similar CMC of 500 mg/L. To the best of our knowledge, our study indicated for the first time that a nonpathogenic bacterium is able to produce long-chain rhamnolipids in MSM medium supplemented with winery residues, as sole carbon and energy source. Key points • Winery and olive oil residues are used for producing long-chain rhamnolipids (RLs). • Both higher RL yields and purity were obtained on nonfermented grape marcs as substrates. • Long-chain RLs revealed stabilities over a wide range of pH, temperatures, and salinities

scholarly journals Mo@GAA-Fe3O4 MNPs: a highly efficient and environmentally friendly heterogeneous magnetic nanocatalyst for the synthesis of polyhydroquinoline derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10497-10511
Author(s):  
Mehraneh Aghaei-Hashjin ◽  
Asieh Yahyazadeh ◽  
Esmayeel Abbaspour-Gilandeh
Keyword(s):  
Ethyl Acetoacetate ◽  
Ammonium Acetate ◽  
Environmentally Friendly ◽  
Magnetic Nanocatalyst ◽  
Methyl Acetoacetate ◽  
Highly Efficient ◽  
Fe3o4 Mnps

Polyhydroquinolines were obtained from a sequential four-component reaction between dimedone or 1,3-cyclohexandione, ethyl acetoacetate, or methyl acetoacetate as a β-ketoester, aldehydes, and ammonium acetate, with Mo@GAA-Fe3O4 MNPs as a green nanocatalyst.

scholarly journals Lanthanide doped two dimensional heterostructure nanosheets with highly efficient harvest towards solar energy

2021 ◽  
pp. 110023
Author(s):  
Youqiang Huang ◽  
Yingjie Zhao ◽  
Yuan Liu ◽  
Beibei Xu ◽  
Shiqing Xu ◽  
...  
Keyword(s):  
Solar Energy ◽  
Two Dimensional ◽  
Highly Efficient

Rational Design of Reversible Redox Shuttle for Highly Efficient Light-Driven Microswimmer

ACS Nano ◽  
2020 ◽  
Vol 14 (3) ◽  
pp. 3272-3280 ◽  
Author(s):  
Jizhuang Wang ◽  
Ze Xiong ◽  
Ming Liu ◽  
Xiao-meng Li ◽  
Jing Zheng ◽  
...  
Keyword(s):  
Rational Design ◽  
Highly Efficient ◽  
Reversible Redox ◽  
Redox Shuttle
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