Article
Environmental Sciences
Dingxiang Wang, Honglong Zhang, Yongqiang Yu, Jing Zhang
Summary: The study proposed an effective strategy using Co3O4 nanoparticles as a catalyst in permanganate oxidation to reduce pharmaceuticals, revealing the degradation pathways of drugs and observing the decay of drug toxicity during the process based on liquid chromatography-tandem mass spectrometry results and Gaussian calculation.
Article
Engineering, Environmental
Jinbin Lin, Yuye Hu, Junyang Xiao, Yixin Huang, Mengyun Wang, Haoyu Yang, Jing Zou, Baoling Yuan, Jun Ma
Summary: Introduced ABTS as an electron shuttle in Fe(II)/PAA process significantly enhanced the oxidation capacity and efficiency for diclofenac elimination. ABTS(.+) was identified as the primary reactive species responsible for diclofenac degradation in the presence of Fe(II) and PAA, although other reactive species like (FeO2+)-O-IV and R-O-. also existed. The study proposed two possible degradation pathways of diclofenac and demonstrated the potential application of ABTS/Fe(II)/PAA process in water treatment for micropollutant removal.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Biotechnology & Applied Microbiology
Lingjun Tong, Sitong Zhang, Rong Huang, Huaxi Yi, Jiong-Wei Wang
Summary: Photodynamic therapy (PDT) is a promising non-invasive treatment that uses photosensitizers to generate reactive oxygen species for targeted cell removal. However, the effectiveness of PDT is limited due to non-specific delivery of photosensitizers. Extracellular vesicles (EVs) are emerging as natural drug delivery systems with potential advantages.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Environmental Sciences
Jiaxin Xu, Jing Zou, Jianying Wu, Huiping Zeng, Yixin Huang, Jingxin Yang, Chunming Gong, Siying Chen, Jun Ma
Summary: This study discovered that ABTS possesses outstanding activation property to enhance the oxidative capacity of chlorination towards organic contaminants under neutral pH conditions. The degradation mechanism and pathways of diclofenac were proposed in the ABTS/FAC system. The ABTS/FAC system showed superior toxicity reduction and anti-interference capacity compared to sole chlorination.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Environmental
Tingting You, Shaofeng Wang, Yimei Xi, Shuhua Yao, Zelong Yan, Yu Ding, Yongbin Li, Xiangfeng Zeng, Yongfeng Jia
Summary: The persistent and photo-induced free radicals of biochar play significant roles in the transformation or degradation of inorganic and organic pollutants. This study discovered that solar radiation primarily expedited the oxidation of As(III) by biochar by augmenting the production of reactive oxygen species (ROS). The pH conditions had a strong influence on the photooxidation of As(III) by biochar.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Agricultural Engineering
Shuai Zhang, Junfeng Su, Amjad Ali, Zhijie Zheng, Yi Sun
Summary: This study investigated the facilitation of different molecular weight humic acid fractions on denitrification by strain YSF15 under low carbon-nitrogen ratio and nitrate conditions. The <3 kDa fraction was found to be the most effective in promoting denitrification, leading to more stable oxidation-reduction potential and compact protein structure.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Shanshan Sun, Manping Zhang, Xushun Gu, Pan Yan, Shengbing He, Azharuddin Chachar
Summary: This review summarizes the discovery process, electron transfer mechanism, influencing factors and driven microorganisms of the newly discovered iron-nitrogen cycle process of microbial catalyzed NH4+ oxidation coupled with iron reduction (Feammox), and expounds the possibility and potential mechanism of Electron shuttles (ESs) to enhance Feammox efficiency. It highlights the current research situation of Feammox for nitrogen removal and future research directions, including how to apply ESs enhanced Feammox to promote nitrogen removal in practical wastewater treatment. This review provides new ideas for the engineering application research of Feammox and strong theoretical support for its development.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Xinru Yang, Xueming Qin, Jiayin Xie, Xiaoyu Li, Huichao Xu, Yongsheng Zhao
Summary: Molasses have a significant effect on the bioremediation of Cr(VI) contaminated groundwater, stimulating its reduction and reducing toxicity on bacteria. Molasses has a higher removal efficiency compared to glucose or emulsified vegetable oil, with a higher remediation concentration and faster removal rate.
Review
Microbiology
Yuepeng Deng, Kaoming Zhang, Jie Zou, Xiuying Li, Zhu Wang, Chun Hu
Summary: This paper reviewed the application of electron shuttle technology for the removal of antibiotics and antibiotic resistance genes in wastewater and organic solid waste. By enhancing extracellular electron transfer, electron shuttles can efficiently remove these pollutants and have great potential for future development.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Jie Li, Yi Li, Pengli Chen, Kuppusamy Sathishkumar, Yumiao Lu, Saraschandra Naraginti, Yunbo Wu, Haisuo Wu
Summary: This study investigated the facilitated biological nitrate removal using ecofriendly green synthesized reduced graphene oxide (rGO) as an electron shuttle. The addition of rGO significantly enhanced the nitrate removal by donating electrons, and the rGO-biofilm showed increased photocurrent response. The study also identified several dominant genera involved in the denitrification process. Overall, the findings suggest that green synthesized rGO can be used as an ecofriendly electron shuttle for facilitated biological denitrification.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Yizhi Sheng, Hailiang Dong, Ravi K. Kukkadapu, Shuisong Ni, Qiang Zeng, Jinglong Hu, Ethan Coffin, Simin Zhao, Andre J. Sommer, Robert M. McCarrick, Gary A. Lorigan
Summary: This study reveals the role of lignin in promoting interactions between minerals and microbes, playing an important role in the reduction process of structural Fe(III) in nontronite. Lignin can act as an electron shuttle and electron donor, positively affecting the reduction of Fe(III).
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Cell Biology
Giulia Greco, Luca Ulfo, Eleonora Turrini, Alessia Marconi, Paolo Emidio Costantini, Tainah Dorina Marforio, Edoardo Jun Mattioli, Matteo Di Giosia, Alberto Danielli, Carmela Fimognari, Matteo Calvaresi
Summary: Combining photodynamic therapy with chemotherapy can enhance the anticancer effects of the drug and reduce its dose-related adverse effects. Doxorubicin, a successful chemotherapy drug, has intrinsic photosensitizing properties that can be exploited to enhance its anticancer activity.
Article
Chemistry, Multidisciplinary
Christopher G. Bailey, Mitchell D. Nothling, Lucy L. Fillbrook, Yen Vo, Jonathon E. Beves, Dane R. McCamey, Martina H. Stenzel
Summary: Polydopamine (PDA) is a synthetic model for melanin and exhibits photo-responsive free radical properties under visible light. This discovery allows PDA to serve as a photo-redox catalyst and sensitizes exogenous species through photoinduced electron transfer. The utility of PDA nanoparticles as a photosensitizer is demonstrated by initiating free-radical polymerization of vinylic monomers. This study provides crucial insights into the photoactive free radical properties of melanin-like materials and highlights a promising application for PDA as a photosensitizer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Mingwan Shi, Wei Pan, Peng Gao, Yuanyuan Chen, Kaiye Wang, Na Li, Bo Tang
Summary: A protein-conjugated photosensitizer with mitochondrial targeting ability was synthesized to enhance the effectiveness of photodynamic therapy. The reactive oxygen species generated by the photosensitizer can effectively destroy key intracellular proteins, disrupt mitochondrial redox homeostasis, leading to mitochondrial dysfunction and irreversible cell death.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yiming Bai, Fei Han, Rongkang Shi, Fuzhi Wang, Jun Wang
Summary: This study presents a facile method to fabricate Al(acac)(3) film as an electron collection layer in organic solar cells (OSCs), achieving higher efficiency and improved operational stability. The results suggest that the enhanced performance is attributed to the high transparency of Al(acac)(3) ECL, optimized interfacial contact, and enhanced exciton dissociation ratio. Further investigations on interface resistances during internal charge transfer indicate the enhancement of stability, highlighting the promising prospect of Al(acac)(3) ECL in high efficiency OSCs.
ORGANIC ELECTRONICS
(2021)
Article
Environmental Sciences
Shuai-Wen Zou, Kok Yuen Koh, Zhihao Chen, Yu-Yang Wang, J. Paul Chen, Yu-Ming Zheng
Summary: In this study, a Fe-Mn-Zr ternary magnetic sorbent was synthesized for efficient removal of both inorganic and organic arsenic species. The optimized sorbent showed higher adsorption capacity and the adsorption performance was affected by pH, contact time, and the presence of other anions in water. The mechanism study indicated that ion exchange and complexation were key processes in arsenic removal.
Article
Nanoscience & Nanotechnology
Li Zhang, Hongcen Zheng, Yonghai Gan, Bingdang Wu, Zhihao Chen, Shuangshuang Wei, Guoyang Zhang, Shujuan Zhang, Bingcai Pan, Chuncheng Chen
Summary: This article introduces a novel method for the synthesis and functionalization of gold nanoparticles using acetylacetone. The size of the nanoparticles can be controlled by adjusting light intensity and acetylacetone dosage. The capping role of acetylacetone allows for stable dispersion in water without changes in morphology and photochemical properties. Additionally, the nanoparticles can be used as imaging probes through reactions with other substances.
Article
Environmental Sciences
Zhihao Chen, Meiqing Chen, Kok Yuen Koh, Wenyang Neo, Choon Nam Ong, J. Paul Chen
Summary: This study developed a CaO2-functionalized wet alginate bead for simultaneous removal of phosphorus and inhibition of algae growth, demonstrating promising potential for the management of harmful algal blooms. The bead showed stable H2O2 release and efficient removal of phosphorus in water, as well as long-lasting inhibition of algae growth, outperforming other traditional methods. This functionalized material also proved effective in removing algae in realistic water samples.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Sujie Shan, Zhihao Chen, Kok Yuen Koh, Wei Wang, Jiayu Wu, J. Paul Chen, Fuyi Cui
Summary: In this study, a new nano-sized lanthanum peroxide composite (LPC) was developed for the simultaneous oxidation and adsorption of arsenite. The LPC demonstrated rapid oxidation and adsorption kinetics, high selectivity, and superior adsorption capacity for arsenite, outperforming many reported adsorbents. Both arsenite and arsenate in simulated arsenic-polluted reservoir waters were effectively removed.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Min Xie, Chengyang Zhang, Hongcen Zheng, Guoyang Zhang, Shujuan Zhang
Summary: This study investigated the effects of diketones (AcAc and BD) on the photochemical conversion of CBZ, compared with H2O2. The results showed that adding diketones enhanced the degradation of CBZ, particularly under simulated solar irradiation. Organic peroxyl radicals were found to play a dominant role in CBZ photodegradation. Furthermore, mutagenic acridine was identified as a major cumulative intermediate in the presence of diketones.
Article
Environmental Sciences
Kok Yuen Koh, Zhihao Chen, Shihan Lin, Kishan Chandra Mohan, Xiaohong Luo, J. Paul Chen
Summary: This study evaluated the characteristics of microplastics in different water sources and oxidation processes and studied the leaching of dissolved organic carbon (DOC) and the formation of chloroform. The results showed that the leached DOC and chloroform formation were related to the degree of surface structural damage on the plastic. This study provides useful information for the risk assessment of microplastics in fresh water and drinking water.
Article
Chemistry, Multidisciplinary
Jianghua Yang, Wenguang Huang, Wentao Zhang, Kunrui Wei, Bingcai Pan, Shujuan Zhang
Summary: Immobilization of enzymes within metal-organic frameworks can enhance their long-term usability, but it often leads to a trade-off between stability and activity. This study shows that the trade-off can be solved by controlling defects through competitive coordination. The biocomposites collected before recrystallization exhibit increased activity and enhanced stability.
Article
Engineering, Environmental
Chengyang Zhang, Guoyang Zhang, Jiyuan Jin, Hongcen Zheng, Zhiwei Zhou, Shujuan Zhang
Summary: The coexistence of selenite (Se(IV)) and acetylacetone (AA) have a synergistic effect on the growth inhibition of Microcystis aeruginosa, which is significant in the control of harmful algal blooms. Se(IV) acts as a catalyst in the reactions between AA and quinones, leading to accelerated reactions. This finding sheds light on the regulation of electron transport chains and redox balances in various processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Li Gong, Jingting Chen, Yao Hu, Kai He, Eric J. Bylaska, Paul G. Tratnyek, Feng He
Summary: This study developed a method of simultaneous sulfidation and nitridation of zerovalent iron (ZVI) through mechanochemical ball milling, which improved the degradation of chloroform (CF). The composite material (S-N(C)-ZVI) exhibited synergistic effects of nitridation and sulfidation on CF degradation. Material characterizations showed that sulfidation and nitridation promoted the formation of Fe3O4 on the S-N(C)-ZVI particles.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jianghua Yang, Zewen Ji, Shujuan Zhang
Summary: Defects were introduced in carbon nitride (CN) by adjusting the ratio of acetylacetone (AcAc) and urea. The resulting modified CNs (AxCN) with dual defects (C doping and surface -OH modification) exhibited higher photocatalytic production rate and selectivity of H2O2, attributed to the synergistic roles of the dual defects in oxygen reduction reactions. This finding provides insights into defect engineering for environmentally friendly generation of H2O2.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Environmental Sciences
Hongcen Zheng, Bingdang Wu, Guoyang Zhang, Tianyu Xie, Zhihao Chen, Shujuan Zhang
Summary: Redox transformation is a useful strategy for reducing metal oxysalts toxicity and facilitating their removal from water. The synergistic effect in the redox transformation of coexisting oxyanions was evaluated using different processes, and the UV/AcAc process was found to be highly effective in oxidizing As(III) and reducing Cr(VI) without the need for additional treatment. This UV/AcAc process consumed significantly less electric energy compared to the sum of UV/H2O2 and UV/sulfite, making it a promising advanced oxidation and reduction process (AORP).
Review
Chemistry, Inorganic & Nuclear
Wentao Zhang, Wenguang Huang, Bingdang Wu, Jianghua Yang, Jiyuan Jin, Shujuan Zhang
Summary: Metal-organic frameworks (MOFs)-mediated photocatalysis is a promising solution to address energy shortage and environmental pollution. Significant progress has been made in the modification strategies for improving the photocatalytic performance of MOFs, as well as in understanding the mechanisms, such as the excitonic effect. This work critically reviews the excitonic effects in charge transfer and energy transfer processes, summarizes common techniques for characterizing excitonic effects, discusses strategies for regulating excitonic behaviors, and provides insights into the current challenges and future perspectives of MOFs-mediated photocatalysis for energy conversion and environmental remediation.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Analytical
Han Cao, Ania S. Pavitt, Jeffrey M. Hudson, Paul G. Tratnyek, Wenqing Xu
Summary: This study uses square-wave voltammetry (SWV) and mediated chronoamperometry (MCA) to determine the electron-exchange capacity (EEC) of pyrogenic dissolved organic matter (pyDOM). SWV gives larger EEC values than MCA, making it suitable for measuring the EEC of natural organic matter and pyDOM.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)