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•AuNPs decorated rGO-ZnCo2O4 nanohybrid prepared by a hydrothermal process.•Au@rGO-ZnCo2O4 cauliflower electrode shows a specific capacity of 288.5 mAh g−1.•Au@rGO-ZnCo2O4//AC hybrid ...cell delivered a power density of 2121 W kg−1.•Fabricated hybrid supercapacitor retained about 97.1% capacity over 5000 cycles.
Herein, we have engineered gold nanoparticles decorated reduced graphene oxide-ZnCo2O4 hybrid material by a hydrothermal process. With exercising benefit of a synergistic influence of reduced graphene oxide and gold nanoparticles, the nanohybrid ensures that internal microstructure is altered from ZnCo2O4 microflower to Au@rGO-ZnCo2O4 cauliflower. The prepared Au@rGO-ZnCo2O4 cauliflower electrode shows a high specific capacity of 288.5 mAh g−1 at 2 mV s−1 scan rate. The more detailed electrochemical interpretation is carried out to understand the charge storage abilities of the electrodes occurred from the capacitive- and diffusion-controlled kinetics processes. These excellent electrochemical performances can be assigned to the incorporation of gold nanoparticles and reduced graphene oxide nanosheets that alleviate electrons exchange and transmit through electrochemical active sites, which create an electronic and structural heterogeneity of the electro-active material. Further, Au@rGO-ZnCo2O4//AC hybrid solid-state supercapacitor cell is designed with polymeric gel electrolyte that delivered a good power density of 2121 W kg−1 at an energy density of 31 Wh kg−1 with excellent capacitance retention over 5000 cycles highlights convenience of the utility of mixing high capacity with high electronic transport. The experimental results reveal that the noble metal nanoparticles incorporated hybrid nanostructures are promising electrode materials for energy storage applications.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
2.
The cauliflower Crozier, A. A. (Arthur Alger), 1856-1899 Book
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•A cauliflower-like super-hydrophobic SERS substrate by two-step laser processing.•The enhancement factor of the SERS substrate reaches 5.9 × 109 for R6G.•The detection limit of the ...SERS substrates for acetamiprid is as low as 10-5 g/L.
Residues of organic pesticides continue to accumulate in the human body through the food chain, posing a serious threat to health. Therefore, the efficient and sensitive detection of pesticide residues is crucial. Surface-enhanced Raman scattering (SERS), as a powerful spectroscopic technique, holds great potential for the trace detection of pesticides. In this study, a cauliflower-like SERS substrate fabricated via a two-step laser processing is proposed for highly sensitive detection of acetamiprid. The cauliflower-like structure features a large surface area, providing numerous hotspots and abundant adsorption sites for the target molecules. Furthermore, the rich micro/nano structures on the surface confer super-hydrophobicity properties to the substrate, effectively enriching the analyte and greatly enhancing the SERS performance. As a result, the cauliflower-like super-hydrophobic substrate demonstrates a detection limit as 10-15 M for the typical dye analyte (R6G), with an enhancement factor of 2.6 × 108. Additionally, the substrate exhibits excellent signal reproducibility with a relative standard deviation of 8.33 %. In practical pesticide detection, the detection limit for acetamiprid on orange is 10-4 g/L, significantly surpassing the national standard. In conclusion, the cauliflower-like super-hydrophobic substrate enhances the sensitivity, uniformity, reproducibility, and reliability of SERS signals in detection process, showing tremendous potential in the field of food safety.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
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In this paper, we report for the first time the fabrication of cauliflower-like Ni(OH)2 particles–coated fabrics with inverse special wettability via a facile hydrothermal method. The ...coated fabric is superhydrophilic in air and superoleophobic underwater, which can be changed into superhydrophobicity after being modified by long-chain fatty acid. After the superhydrophilic fabric is wetted by water in advance, hot alkaline water can be removed from the light oil/water mixture driven by gravity. Also, heavy oil can be removed from the heavy oil/hot alkaline water mixture under the action of gravity using superhydrophobic fabric. The separation efficiencies of the two fabrics for different mixtures of hot alkaline water and light or heavy oil are more than 95.8%. Furthermore, a two-way separation device was designed via integrating a pair of fabrics with opposite wettability. The device can continuously separate oil and water at the same time from oil/hot alkaline water mixture via one-step route with high separation efficiency without consideration of the density of the oil. Moreover, the superhydrophilic fabric is capable of separating various oil-in-water emulsions. We believe that the as-prepared fabrics and the designed device may find wide application in separating oil from alkaline water.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Cauliflower is one of horticulture vegetable which has potential to be cultivated by farmer, because of it’s price is higher than other vegetables on the market. This study aims to analyze the ...efficiency of cabbage farm in Sumber Bening village Selupu Rejang Lebong Regency. This study used census method by using all 22 cauliflower farmers as respondent. Data used in this study is primary and secondary. Data analyzed using quantitative and qualitative method. This study result shows that revenue of cauliflower farmer is Rp 1.675,628,75 per season. Efficiency value or R/C ratio is 1.36, BEP 769,82 kg and Rp 4.402,78
Superhydrophobic materials are currently undergoing rapid development in various industries, with increasing attention being paid to their service life. Herein, we report an all-weather self-healing ...superhydrophobic cotton fabric based on photothermal and Joule-heating effects, which can be used for efficient oil-water separation. With the assistance of Safranine T, unique cauliflower-like polypyrrole (PPy) was prepared. Subsequently, titanium nitride (TiN) was loaded to enhance the photothermal performance of the fabric, and polydimethylsiloxane (PDMS) was grafted onto surface to improve the water repellency of PPy@TiN/PDMS fabric. The fabric not only has strong light absorption in visible-near infrared region, but also has good Joule-heating effect, up to 116.3 °C (light intensity of 5 sun) and 128.5 °C (voltage of 8 V). Due to unique all-weather heating performance, the migration of low surface energy PDMS chains is accelerated, so that the PPy@TiN/PDMS fabric after air plasma etching and oxydation can quickly heal its water contact angle (WCA) to 156° under light or low voltage conditions. Additionally, the fabric demonstrates an outstanding performance for the separation of various oil-water mixtures and in multiple cycle separation experiments. This study presents a novel approach for extending the longevity of superhydrophobicity and addressing the issue of waste oil treatment.
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•Cauliflower-like PPy was grown in situ on cotton fabric using Safranine T as a template.•Synergistic effect of cauliflower-like PPy and TiN enhances the photothermal conversion performance.•PPy@TiN/PDMS fabric can be heated all-weather to heal the superhydrophobic layer.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
It is wondered whether vermicompost can be an alternative to peat in seedling production. Therefore, this study investigated the effects of different vermicompost rates on the growth, quality ...characteristics and macro and micro mineral concentrations of pepper and cauliflower seedlings. There were 4 treatments consisting of different mixtures in the study. T1: 70% peat + 27% perlite + 3% vermiculite; T2: 70% vermicompost + 27% perlite + 3% vermiculite; T3: 35% peat + 35% vermicompost + 27% perlite + 3% vermiculite; T4: 100% vermicompost. ‘Sivrillo’ F1 (Capsicum annuum var. longum) pepper and ‘Casper’ F1 (Brassica oleraceae var. botrytis) cauliflower varieties were used as the plant material. Vermicompost mixtures had a significant impact on pepper and cauliflower seedlings. The emergence and growth characteristics of pepper seedlings were similar in T1, T2 and T3 treatments. However, the T3 mixture provided the highest emergence rate and seedling height in cauliflower seedlings. T3 also increased the leaf area both pepper and cauliflower seedlings more than the other treatments. Although T2 medium showed the highest N, K, and Mg contents in pepper seedlings, vermicompost mixtures had the highest P, K, Ca, and Mg concentrations in cauliflower. Vermicompost mixtures had higher microelement contents in cauliflower, whereas similar results were obtained from T2 and T1 treatments in pepper seedlings. In conclusion, it was determined that the 35% peat and 35% vermicompost mixture was appropriate for pepper and cauliflower seedlings in terms of many criteria. Additionally, noteworthy results were obtained when 70% peat was substituted with vermicompost.
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IZUM, KILJ, NUK, ODKLJ, PILJ, PNG, SAZU, UL, UM, UPUK
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