Article
Biochemistry & Molecular Biology
Di Liu, Jinu Song, Jin Suk Chung, Seung Hyun Hur, Won Mook Choi
Summary: In this study, ZnO/BNQD nanocomposites with excellent photocatalytic performance and stability for organic dye degradation were successfully synthesized. The photocatalytic mechanism was proposed and discussed based on the obtained results. The ZnO/BNQD nanocomposites demonstrate potential as an efficient low-cost photocatalyst for environmental remediation.
Article
Chemistry, Multidisciplinary
Xin Zhang, Bo Tang, Yansong Li, Chengbin Liu, Pengfei Jiao, Yuping Wei
Summary: A new strategy for designing molecularly imprinted magnetic fluorescent nanocomposites for selective fluorescence detection of target proteins has been proposed. The multifunctional nanocomposite with optics, magnetism, and biocompatibility has shown promising results in the detection of lysozyme in biological samples.
Article
Engineering, Electrical & Electronic
S. Asaithambi, P. Sakthivel, M. Karuppaiah, V Balaji, R. Yuvakkumar, G. Ravi
Summary: In this study, Mn-doped SnO2@ZnO nanocomposites were synthesized for the degradation of Methylene blue and Rhodamine B dyes under visible light irradiation. The analytical results identified the crystal structure, optical properties, and purity of the synthesized samples, and evaluated the photocatalytic degradation efficiency under visible light irradiation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
P. Gnanamozhi, A. Monamary, S. David Jereil, J. Evangeline Pauline, J. Andrew Oswin Ratnam, A. Ganeshkumar, V. Pandiyan, Asma A. Alothman, Razan A. Alshgari, Mani Govindasamy
Summary: The study aims to eliminate toxic dyes in industrial wastewater by using aluminum-substituted zinc oxide nanoparticles before they enter water bodies. The substitution of aluminum modifies the crystal structure and enhances the optical absorption, thereby improving the photocatalytic activity of zinc oxide nanoparticles.
SURFACES AND INTERFACES
(2023)
Article
Environmental Sciences
Sucheewan Krobthong, Tipawan Rungsawang, Sutthipoj Wongrerkdee
Summary: ZnO nanoparticles were synthesized using precipitation and combustion techniques. The precipitation method resulted in larger crystal sizes compared to the combustion method, while the particle sizes were similar. The functional analysis revealed surface defects in the ZnO structures. In the photocatalytic degradation of methylene blue, ZnO precipitation exhibited better degradation performance due to its larger crystal sizes, which facilitated carrier movement and reduced electron-hole recombination. The crystallinity of ZnO nanoparticles is thus an important factor in photocatalytic activity. Furthermore, precipitation is an interesting method for synthesizing ZnO nanoparticles with large crystal sizes.
Article
Environmental Sciences
Sutthipoj Wongrerkdee, Sawitree Wongrerkdee, Chatdanai Boonruang, Supphadate Sujinnapram
Summary: ZnO and Ti-ZnO nanoparticles were synthesized using rapid combustion. The Ti-ZnO exhibited a specific surface area two times higher than that of ZnO, leading to a significant improvement in the photocatalytic degradation of methylene blue.
Article
Engineering, Environmental
Mahboubeh Rabbani, Javad Shokrayian, Rahmatollah Rahimi, Rezvaneh Amrollahi
Summary: Zinc oxide and doped zinc oxide nanorods were successfully synthesized using a simple template-free precipitation technique, with meso-tetrakis (4-sulfonatophenyl) porphyrin immobilized on the zinc oxide nanorods. The photocatalytic activity of TPPS/ZnO was found to be higher than that of pure zinc oxide and doped zinc oxide under visible light irradiation, as revealed by various characterization techniques and degradation studies of methylene blue.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ji Xu, Lixi Wang, Xueliang Zhao, Yutong Shi, Yongjiao Shi, Ting Liu
Summary: In this study, high-performance blue quantum dots light-emitting diodes using ZnO nanoparticles as the electron transport layer were reported. Experimental results showed that the properties of solvents used for ZnO NPs play a crucial role in modulating electron injection across the QDs/ETL interface. Blue QLEDs with ZnO NPs dispersed in butanol exhibited significantly improved current efficiency and external quantum efficiency compared to other solvents.
Article
Materials Science, Multidisciplinary
Duygu Akyuz
Summary: Metal oxides are commonly used catalysts for removing dyes and toxins. The synthesized catalyst showed excellent degradation rate and efficiency, as well as high photocurrent density, stability, and recyclability under UV light irradiation.
Article
Engineering, Environmental
Afsaneh Mozdbar, Amideddin Nouralishahi, Shohreh Fatemi, Fatemeh Sadat Talatori
Summary: This study investigated the impact of carbon quantum dots (CQDs) on the photocatalytic performance of TiO2 under UV and visible light. CQDs were synthesized through solvothermal procedure and their optical properties were optimized. CQDs/TiO2 nanocomposites were prepared using CQDs450 and CQDs550. The nanocomposite sample with CQDs550 showed superior performance in the photocatalytic removal of methylene blue under visible light.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Salma Ahmed Al-Zahrani, Khalid Umar, Saleh Ali Tweib, Jebrel Abdeljawad M. Rashd, Saima Khan Afridi, Showkat Ahmad Bhawani, Ahmed Al Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, Manikandan Ayyar
Summary: In this study, zinc oxide (ZnO) and zinc oxide/graphene oxide (ZnO/GO) were successfully synthesized using Carica papaya leaf extract and oil palm empty fruit bunch biomass. The samples were characterized to understand their morphology, size, structural phase purity, functional groups and optical properties. The results showed the presence of various peaks and a red shift in the case of ZnO/GO. The synthesized materials exhibited nanosized particles and showed high decolorization efficiency for methylene blue.
Article
Chemistry, Physical
Bugra Akman, Omur Aras
Summary: In this study, a microreactor coated with different silver content ZnO photocatalyst was used for the treatment of aqueous methylene blue solution under UV-A irradiation. The experiments revealed that 91% of methylene blue degradation was achieved with 1% Ag doped ZnO coated microreactor for a residence time of 2.5 minutes, and 96% removal was attained with the addition of 10% hydrogen peroxide. The study also showed the impact of morphological structures of ZnO-coated surfaces with and without silver on water treatment efficiency.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Inorganic & Nuclear
Shubhangi N. Kotkar, Subedar Prasad, Gunwant P. Gadekar, Suresh B. Rewatkar
Summary: Natural sunlight active zinc oxide nanoparticles were synthesized using a simple solution auto combustion method. The structural and optical characteristics of the nanoparticles were studied, and it was found that they exhibited excellent photodegradation activity and antimicrobial properties.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Dinda Gusti Ayu, Saharman Gea, Dewi Junita Andriayani, Dewi Junita Telaumbanua, Averroes Fazlur Rahman Piliang, Mahyuni Harahap, Zhihao Yen, Ronn Goei, Alfred Iing Yoong Tok
Summary: This study successfully synthesized carbon dots (CDs), nitrogen-doped zinc oxide (N-ZnO), and N-ZnO/CD nanocomposites as photo catalysts for degradation of methylene blue (MB). The CDs were synthesized using a hydrothermal method, with soybean and ethylenediamine as dopants. N-ZnO was synthesized by calcination with urea as the nitrogen dopant. The N-ZnO/CD nanocomposites showed the highest photodegradation efficiency, making them ideal for organic compound decolorization in wastewater treatment.
Article
Physics, Condensed Matter
Dilip K. L. Harijan, Sakshi Gupta, Sachin Kumar Ben, Amit Srivastava, Jai Singh, Vimlesh Chandra
Summary: The report demonstrates the photocatalytic degradation of methylene blue dye under solar energy using alpha-Fe2O3-ZnO composite, synthesized by a simple chemical method. The composite shows superior degradation capacity compared to bare hematite and zinc oxide nanoparticles, with the 1:2 composite exhibiting the best performance. UV light plays a crucial role in the catalytic degradation of methylene blue, while visible light has no effect.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Environmental Sciences
Muqiu Hu, Xin Zhao, Jinghan Gu, Lulu Qian, Zhiqing Wang, Yuanyuan Nie, Xiaoyu Han, Long An, Haiqiang Jiang
Summary: Due to its simple process, environmental friendliness, and low operating costs, biometallurgy has become a popular technology for metals recovering from low-grade ores and tailings. An optimized agar was used to isolate and grow functional bacteria, resulting in the successful isolation of six functional stains. These strains were further tested for their ability to leach metals from polymetallic sulfide tailings, with significant improvements observed when the strains were mixed together. The selection of leaching process should be based on tailings composition and target metals.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Saqib Hassan, Aswin Thacharodi, Anshu Priya, R. Meenatchi, Thanushree A. Hegde, R. Thangamani, Ht Nguyen, Arivalagan Pugazhendhi
Summary: An Endocrine Disrupting Chemical (EDC) is a compound that disrupts the function of the endocrine system and is found in the environment. EDCs, such as Bisphenol A and pesticides, have been shown to have negative effects on the female reproductive system. Understanding the relationship between EDCs and women's health is crucial for developing strategies to protect reproductive health and informing public policy decisions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Lichang Zhou, Zhaoling Li, Boyi Cheng, Jinqi Jiang, Xinqi Bi, Zongping Wang, Guanghao Chen, Gang Guo
Summary: Thiosulfate can promote sulfur-mediated bacterial activity, inhibit glycogen accumulating organisms, and enhance denitrification efficiency. After the carbon source is reduced, the competitive ability of glycogen accumulating organisms increases, resulting in reduced sulfate reduction.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Claire E. Campbell, Devyn L. Cotter, Katherine L. Bottenhorn, Elisabeth Burnor, Hedyeh Ahmadi, W. James Gauderman, Carlos Cardenas-Iniguez, Daniel Hackman, Rob McConnell, Kiros Berhane, Joel Schwartz, Jiu-Chiuan Chen, Megan M. Herting
Summary: Recent studies have found a connection between air pollution and increased risk for behavioral problems during development. However, more longitudinal studies are needed to investigate how exposure during the transition to adolescence may affect emotional behaviors.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jing-hong Liang, Ru-yu Yang, Mei-ling Liu, Ying-qi Pu, Wen-wen Bao, Yu Zhao, Li-xin Hu, Yu-shan Zhang, Shan Huang, Nan Jiang, Xue-ya Pu, Shao-yi Huang, Guang-hui Dong, Ya-jun Chen
Summary: This study examines the association between urban Green and blue spaces (GBS) exposure and Emotion and behavior problems (EBP) in youth populations. The findings suggest that higher exposure to GBS, particularly green spaces (GS) and blue spaces (BS), is associated with a decrease in the risk of developing total difficulties in young individuals. The joint effect of GS and BS may also contribute to the decrease in EBPs.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Diego Ruiz-Sobremazas, Mario Ruiz Coca, Miguel Morales-Navas, Rocio Rodulfo-Cardenas, Caridad Lopez-Granero, Maria Teresa Colomina, Cristian Perez-Fernandez, Fernando Sanchez-Santed
Summary: Air pollution is associated with a range of health issues and gestational exposure to environmental pollutants may be linked to neurodevelopmental disorders. This study investigated the effects of oral gestational exposure to particulate matter (PM) on ultrasonic vocalizations (USV). The findings suggest that this exposure may lead to social deficits and abnormal gene expression related to neurotransmitter systems. Further research is needed to better understand the effects of air pollution on neurodevelopmental disorders and the neurotransmission systems involved.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Chuanwu Zhao, Yaozhong Pan, Hanyi Wu, Yu Zhu
Summary: This study analyzed the impact of industrial zones on urban heat islands using remote sensing images and a novel spectral index. The research found that the contraction or expansion of industrial zones has a significant effect on land surface temperature. The results are valuable for environmental assessment and fine management of industrial cities.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Bang Du, Zhongzhong Wang, Piet N. L. Lens, Xinmin Zhan, Guangxue Wu
Summary: This study investigated the performance, syntrophic relationships, microbial communities, and metabolic pathways of ethanol-fed reactors with different operational modes and solids retention times. The results showed that different microorganisms were enriched under different SRT conditions, and syntrophic bacteria related to methane production could be enriched under low SRT conditions.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Gokulan Ravindiran, Sivarethinamohan Rajamanickam, Muralikrishnan Ramalingam, Gasim Hayder, Balamurugan Karupaiya Sathaiah, Madhava Krishna Reddy Gaddam, Senthil Kumar Muniasamy, Priya Arunkumar
Summary: The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The biochar produced by the marine algae Ulva reticulata was used to remove chromium, nickel, and zinc from aqueous solutions. The study examined the adsorbents' properties and stability using SEM/EDX, FTIR, and XRD. The results showed that the biochar had high removal efficiency for the toxic metals, and the packed bed column effectively removed the heavy metal ions. The Thomas and Adams-Bohart models were found to best fit the regression values, and desorption studies were conducted to understand the sorption and elution processes.
ENVIRONMENTAL RESEARCH
(2024)
Review
Environmental Sciences
Vignesh Vinayagam, Kavitha Nagarasampatti Palani, Sudha Ganesh, Siddharth Rajesh, Vedha Varshini Akula, Ramapriyan Avoodaiappan, Omkar Singh Kushwaha, Arivalagan Pugazhendhi
Summary: The presence of pollutants in water contributes to global pollution and poses significant threats to humans and wildlife. Finding effective wastewater treatment techniques is crucial for reducing pollutant accumulation in the environment. This paper highlights recent advances in the electrochemical advanced oxidation method and other processes for treating pharmaceuticals, dyes, and pesticide-polluted effluents.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
M. M. M. Ahmed, Kai-Yue Chen, Fang-Yu Tsao, Yi-Cheng Hsieh, Yu-Ting Liu, Min Tzou
Summary: This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP. The results showed that citric acid could increase P availability and have an impact on P sorption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Xibo Xu, Zeqiang Wang, Xiaoning Song, Wenjie Zhan, Shuting Yang
Summary: The selection of predictor variables is crucial in building a digital mapping model for potentially toxic elements (PTEs) in soil. Traditionally, spatial and spectral parameters have been used as predictor variables, but the temporal dimension is often overlooked. This study demonstrates the value of incorporating temporal indices in the model, leading to significant performance improvements. The temporal-spatial-spectral covariate combinations used in a random forest (RF) algorithm achieve satisfactory mapping accuracy and outperform other methods.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Yan Pei, Xun Liu, Mengbo Cao, Zijun Wang, Hongbing Yang
Summary: Heteroatom doping can reconfigure the electronic structure of heterogeneous catalysts, leading to the development of advanced oxidation water purification materials with superior performance and stability. In this study, a series of catalysts with different elemental doping were prepared using a simple and environmentally friendly method. The S-doped NiCo2O4 catalyst showed excellent catalytic performance for the removal of Tetracycline, with significantly increased kinetic constant and high oxidation and mineralization efficiency in a wide pH range. The degradation process was dominated by non-radical oxidation pathway after S doping, and the overall process moved towards low toxicity.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Srivalli Thimmarayan, Harshavardhan Mohan, Gaddapara Manasa, Karthi Natesan, Shanmugam Mahendran, Pavithra Muthukumar Sathya, Byung-Taek Oh, R. Ravi Kumar, Rangasamy Sigamani Gandhimathi, Arul Jayaprakash, Kamala-Kannan Seralathan
Summary: This study investigated the bacterial degradation of naphthalene (NPT) isolated from crude oil-contaminated soil. Bacillus sp. GN 3.4, a potential bacteria for NPT biodegradation, was isolated and the optimal conditions for NPT degradation were determined. The study suggests that Bacillus sp. GN 3.4 could potentially aid in bioremediation by eliminating NPT from the soil.
ENVIRONMENTAL RESEARCH
(2024)