CATALYSIS TODAY
·
2018
·
IF 4.667
Luyao Ren,Liangzhong Li,Shuai Chen,Hui Li,Yongdi Liu,Liyang Zhou,Su Guo,YunJiang Yu
In this study, Fe/FeS@SiO 2 yolk-shell particles (Fe/FeS@SiO 2 YSPs) were synthesized, characterized, and applied to tetrabromobisphenol A (TBBPA) removal in simulated groundwater. The X-ray photoelectron spectroscopy, X-ray diffraction, Scanning electron microscopy, transmission electron microscopy and Brunauer Emmett Teller results revealed that Fe/FeS@SiO 2 YSPs possess special structures, including active cores, mesoporous networks, shells, hollow cavities and a large surface area (85 m 2 /g vs. 8 m 2 /g) compared to Fe/FeS. The mobility of the synthesized particles in porous media was simulated with sand column experiments. Fe/FeS@SiO 2 YSPs showed a much better transportability (83.02% of particles successfully transported through the column) than Fe/FeS particles (only 1.68%), related to the better suspension stability and much lower particle surface charge (−22.7 mV vs. −7.6 mV) at neutral pH. Improved TBBPA reduction performance in synthetic solution was observed for Fe/FeS@SiO 2 YSPs over bare Fe/FeS. The transformation pathway of TBBPA was studied in detail, revealing the formation of tri-BBPA, di-BBPA, mono-BBPA and BPA as the main products. In brief, thanks to the hollow mesoporous silica spheres (HMSS) coated on the surface of Fe/FeS particles, Fe/FeS@SiO 2 YSPs showed an enhanced dispersibility, transportability and degradation of TBBPA in simulated groundwater. The results in this study proved that Fe/FeS@SiO 2 YSPs are a promising material for in situ remediation of TBBPA in soil and groundwater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Yaoyi Li,Kexin Chen,Xi Wang,Zijun Xiao,Gaozu Liao,Jing Wang,Xukai Li,Yiming Tang,Chun He,Laisheng Li
In this study, reduced graphene oxide (rGO) was used to fabricate a Z-scheme BiVO 4 -(rGO-Cu 2 O) photocatalyst for the degradation of Tetrabromobisphenol A (TBBPA) under sunlight irradiation. The photocatalyst was synthesized using a three-step method BiVO 4 -(rGO-Cu 2 O) photocatalyst with an rGO loading of 1% and (rGO-Cu 2 O) to BiVO 4 ratio of 50% achieved the best degradation effect for TBBPA removal. Electron paramagnetic resonance spectroscopy (EPR) confirmed that the charge transfer path of BiVO 4 -(rGO-Cu 2 O) follows that of Z-scheme photocatalysts. Moreover, the addition of rGO increases the charge transfer efficiency. High performance liquid chromatography-mass spectrometry (HPLC-MS) was used to detect and analyze intermediate products, allowing the proposal of the main degradation pathway of TBBPA. Photogenerated electrons of BiVO 4 -(rGO-Cu 2 O) were then transferred into the conduction band of Cu 2 O. Cu 2 O is located in the surface layer, which has the most effective contact area with pollutants, and therefore has a good outcome for the photocatalytic reduction of TBBPA. Photogenerated electrons (e − ) and hydroxyl radicals (∙OH) are the main factors affecting TBBPA degradation. The degradation process of TBBPA includes electron reduction debromination , hydroxylation , and β-cleavage. In our work, BiVO 4 -(rGO-Cu 2 O) was successfully synthesized to degrade TBBPA; this study brings forth a novel approach for the degradation of halogenated organic pollutants using a Z-scheme photocatalytic composite.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Rengui Weng,Feng Tian,Zhendong Yu,Jiachen Ma,Yuancai Lv,Beidou Xi
Currently, Tetrabromobisphenol A (TBBPA) has been regarded as an emerging organic pollutant and efficient TBBPA elimination technology has been attracting increasing attention. In this work, a novel photocatalyst, MoS 2 /SnIn 4 S 8 , was synthesized through hydrothermal method by introducing few-layer MoS 2 nanosheets and then employed to establish an integrated photocatalytic reduction/oxidation system for the remediation of TBBPA under visible light. The characterization results demonstrated that the few-layer MoS 2 nanosheets were well combined with SnIn 4 S 8 and significantly lowered the recombination rate of the photo-induced electron and holes, leading to outstanding photocatalytic performance of MoS 2 /SnIn 4 S 8 composite. Besides, the MoS 2 /SnIn 4 S 8 composite also exhibited excellent reusability (over 10 runs) and stability. The TBBPA degradation experiments showed that the integrated photocatalytic reduction/oxidation system was able to completely degrade TBBPA and mineralize its byproducts (60.2 ± 2.9%). In the photocatalytic reduction, due to the cleavage of C–Br bonds by photo-induced electrons, TBBPA underwent stepwise debromination and finally transferred into BPA in 6 h. In the following photocatalytic oxidation, under the attack of reactive oxygen species ( 1 O 2 , h + , OH and O 2 − ), BPA was first decomposed into aromatic products (such as phenol, benzoic acid , p -hydroxybenzyl alcohol and so on) via C–C bond cracking and hydroxylation, and then further oxidized into organic acids like maleic acid and muconic acid through ring-opening, and finally mineralized into CO 2 and H 2 O. What was noteworthy was that the final effluent from the photocatalytic reduction/oxidation system showed no toxicity to the luminescent bacteria.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Zhansheng Li,Baocheng Qu,Jingqiu Jiang,Tadiyose Girma Bekele,Hongxia Zhao
The photoactivity of dissolved organic matter (DOM) has a great impact on the photodegradation of organic pollutants in natural waters. In this study, the photodegradation of TBBPA was investigated under simulated sunlight irradiation in the presence of copper ion (Cu 2+ ), dissolved organic matter (DOM) and Cu-DOM complexation (Cu-DOM) to illustrate the effect of Cu 2+ on photoactivity of DOM. The rate of photodegradation of TBBPA in the presence of Cu-DOM complex was 3.2 times higher than that in pure water. The effects of Cu 2+ , DOM and Cu-DOM on the photodegradation of TBBPA were highly pH dependent and hydroxyl radical(·OH) responded for the acceleration effect. Spectral and radical experiments indicated that Cu 2+ had high affinity to fluorescence components of DOM, and acted as both the cation bridge and electron shuttle, resulting the aggregation of DOM and increasing of steady-state concentration of ·OH (·OH ss ). Simultaneously, Cu 2+ also inhibited intramolecular energy transfer leading to the decrease of steady-state concentration singlet oxygen ( 1 O 2ss ) and triplet of DOM ( 3 DOM ⁎ ss ). The interaction between Cu 2+ and DOM followed the order of conjugated carbonyl C O, COO − or C O stretching in phenolic groups and carbohydrate or alcoholic C O groups. With these results, a comprehensive investigation on the photodegradation of TBBPA in the presence of Cu-DOM was conducted, and the effect of Cu 2+ on the photoactivity of DOM was illustrated. These findings helped to understanding the potential mechanism of interaction among metal cation, DOM and organic pollutants in sunlit surface water, especially for the DOM-induced photodegradation of organic pollutants.
研究领域:
环境科学
·
水污染治理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2022
·
IF 9.988
Xiuying Jia,Ruopeng Yan,Huikang Lin,Zhiquan Liu,Lilai Shen,Hongmei Yang,Haoying Wu,Xiaodong Shan,Hangjun Zhang
Tetrabromobisphenol A (TBBPA), which is the most widely employed brominated flame retardant , and its alternative tetrachlorobisphenol A (TCBPA) are widely distributed in aquatic environments. In the present study, the hepatotoxicity induced by TBBPA and TCBPA was investigated in Rana nigromaculata , and the potential mechanisms were investigated with a particular focus on ROS (reactive oxygen species) -dependent mitochondria-mediated apoptosis. Healthy adult frogs were exposed to 0, 0.001, 0.01, 0.1, and 1 mg/L waterborne TBBPA and TCBPA for 14 days. The results showed that liver weight was significantly increased by 51.52%–98.99% in the 0.01, 0.1, and 1 mg/L TBBPA and TCBPA groups relative to the control. Histological examination revealed that the structure of the liver, to some extent, was influenced by TBBPA and TCBPA with nuclear shrinkage and mitochondrial swelling. Meanwhile, TBBPA and TCBPA have significantly increased the alanine transaminase level in serum and the content of ROS, while inhibiting the activity of superoxide dismutase in the liver. In addition, DNA fragments were observed in the TBBPA and TCBPA groups relative to the control. Expression of Cytochrome C was significantly increased by 1.13-, 1.38-, 1.60-, and 2.46-fold in 0.001, 0.01, 0.1, and 1 mg/L TBBPA, and by 1.26-, 1.51-, 2.14-, and 2.98- fold in 0.001, 0.01, 0.1, and 1 mg/L TCBPA, respectively, which indicated that TCBPA may be more toxic than TBBPA. Similarly, the ratio of Bax/Bcl-2 was increased in a dose-dependent manner. These results indicated that apoptosis in the ROS-dependent mitochondrial pathway mediates hepatotoxicity caused by TBBPA and TCBPA. The present study will facilitate an understanding of the toxicity mechanism of flame retardants.
研究领域:
环境毒理学
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水生生物学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2019
·
IF 3.206
Fang Tan,Bin Lu,Zengze Liu,Guangyu Chen,Yanqun Liu,Feifei Cheng,Yikai Zhou
Tetrabromobisphenol A (TBBPA) is extensively used as brominated flame retardant. TBBPA and some of its metabolites had been identified as endocrine disrupter with potential health risk. Understanding the distribution characters of TBBPA and its metabolites in fish is essential to evaluate the potential impacts of TBBPA on aqueous ecosystem. This study developed a simple method to identify and quantify TBBPA and its metabolites simultaneously in tissues of alult zebrafish by ultra-high performance liquid chromatography couple with Orbitrap high resolution mass spectrometry(UHPLC-Orbitrap-HRMS). Six TBBPA metabolites were identified in liver, kidney, gill and muscle of adult zebrafish exposed to water containing different TBBPA levels, two of them, 1,3-dibromo-2‑methoxy‑5-vinylbenzene and 2,6-dibromo-4-nitrophenol were first detected. TBBPA and its metabolites were mainly distributed in the livers and kidneys of zebrafish. The levels of TBBPA and metabolites reached maximum on exposed day 3, then decreased gradually in liver and kidney. TBBPA oxidative cleavage products and TBBPA-monosulfate were the dominant metabolites. UHPLC-Orbitrap-HRMS provided an effective solution to study the distribution and metabolite characters of TBBPA in aquatic organisms.
研究领域:
环境科学
·
分析化学
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
npj Biofilms and Microbiomes
·
2025
·Vol. 11
·期 1
·1-12
·
IF 9.2
Wu Tong,Guo Sheng-Zhi,Zhang Yi,Zhao Xi-Ze,Ran Cong-Guo,Liu Feng-Lan,Wang Run-Hua,Li De-Feng,Zhu Hai-Zhen,Jiang Cheng-Ying,Shen Xi-Hui,Liu Shuang-Jiang
The capability to understand and construct synthetic microbiomes is crucial in biotechnological innovation and application. Tetrabromobisphenol A (TBBPA) is an emerging pollutant, and the understanding of its biodegradation is very limited. Here, a top-down approach was applied for the enrichment of TBBPA-degrading microbiomes from natural microbiomes. Ten keystone taxa correlated to TBBPA degradation and their co-occurrence interactions were identified by the dissection of the degrading microbiomes. Those keystone taxa were targeted and cultivated, and the genomic information was obtained by genome sequencing of strains and metagenomic binning. The keystone bacterial strains showed efficient degradation of TBBPA, and L -amino acids were important co-metabolic substrates to promote the degradation. Guided by this knowledge, a bottom-up approach was applied to design and construct a simplified synthetic consortium SynCon2, that consisted of four strains. The SynCon2 demonstrated efficient TBBPA degradation activity and soil bioremediation. Our study demonstrates the importance of the application of multiple tools in understanding the functions of microbiomes and provides an integrated top-down and bottom-up strategy for the construction of synthetic microbiomes with various applications.
研究领域:
环境生物技术
·
合成生物学
·
微生物生态学
·
生物修复技术
·
基因组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Toxics
·
2025
·Vol. 13
·期 8
·686
·
IF 4.1
Qi Wang,Aiguo Gu,Hongzhen Lian,Jie Zou
Understanding the differences in the adsorption behaviors of tetrabromobisphenol A (TBBPA) and tetrabromobisphenol S (TBBPS) on soils is critical for assessing their environmental mobility and risks. This study investigated the adsorption characteristics and patterns of TBBPA/S across various soil types. Adsorption kinetics analysis indicated that the adsorption of TBBPA/S on soils followed pseudo-secondary-order kinetics. Isotherm results revealed that the Langmuir model described TBBPA adsorption more accurately, while the Freundlich model was a better fit for TBBPS adsorption, suggesting distinct adsorption mechanisms due to their differing properties. Correlation analysis and principal component analysis (PCA) were performed to identify the key soil physicochemical properties influencing TBBPA/S adsorption. The results showed that TBBPA adsorption was inversely correlated with soil pH and positively correlated with clay content. In contrast, TBBPS adsorption displayed negative correlations with soil pH and sand content, and positive correlations with amorphous iron, amorphous aluminum, and free iron content. Further analysis of different treated soil fractions demonstrated that soil organic matter dominated the adsorption of TBBPA/S, with humic acid playing a more significant role than humin. The adsorption behavior characteristics of TBBPA/S on different soils provide fundamental data for understanding their environmental fate in soil systems.
研究领域:
环境科学
·
土壤化学
·
污染物吸附
·
环境风险评估
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2018
·
IF 4.358
Hangjun Zhang,Wenli Liu,Bin Chen,Jianbo He,Feifei Chen,Xiaodong Shan,Qiongxia Du,Ning Li,Xiuying Jia,Juan Tang
Tetrabromobisphenol A (TBBPA) and tetrachlorobisphenol A (TCBPA) are persistent toxic environmental pollutants that cause severe reproductive toxicity in animals. The goal of this study was to compare the reproductive toxic effects of TBBPA and TCBPA on male Rana nigromaculata and to expound on the mechanisms leading to these effects. Healthy adult frogs were exposed to 0, 0.001, 0.01, 0.1, and 1 mg/L of TBBPA and TCBPA for 14 days. Sperm numbers were counted by erythrometry. Sperm mobility and deformities were observed under a light microscope (400 × ). We used commercial ELISA kits to determine the serum content of testosterone (T), estradiol (E2), luteinizing hormone (LH) and follicle stimulating hormone (FSH). Expression of androgen receptor (AR) mRNA was detected using real-time qPCR. Sperm numbers and sperm mobility were significantly decreased and sperm deformity was significantly increased in a concentration dependent manner following exposure to TBBPA and TCBPA. Sperm deformity was significantly greater in the 1 mg/L TCBPA (0.549) treatment group than in the 1 mg/L TBBPA (0.397) treatment group. Serum T content was significantly greater in the 0.01, 0.1 and 1 mg/L TBBPA and TCBPA experimental groups compared with controls, while E2 content was significantly greater in only the 1 mg/L TBBPA and TCBPA experimental groups. Expression levels of LH and FSH significantly decreased in the 1 mg/L TBBPA and TCBPA treatment groups. AR mRNA expression decreased markedly in all the treated groups. Our results indicated that TBBPA and TCBPA induced reproductive toxicity in a dose-dependent manner, with TCBPA having greater toxicity than TBBPA. Furthermore, changes in T, E2, LH, and FSH levels induced by TBBPA and TCBPA exposure, which led to endocrine disorders, also caused disturbance of spermatogenesis through abnormal gene expressions of AR in the testes .
研究领域:
环境毒理学
·
内分泌学
·
生殖生物学
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Yang Wang,Liweng Ma,Feng Xu,Rongkai Ren,Jianzhi Wang,Chen Hou
The novel photocatalytic advanced oxidation catalyst, ZIF-67@MXene-TA-CNF (ZIF-67@MTC) aerogels , was prepared via introducing tannic acid-coated cellulose nanofibril (TA-CNF), two-dimensional layered MXene, and ZIF-67 into a composite aerogel network. Specially, TA assisted the crosslinking of CNF through hydrogen bonds to construct the flexible aerogel skeleton, accompanied by assembly of MXene and ZIF-67. MXene not only provided sufficient attachment sites for the anchoring of ZIF-67, but also can be used as a repository for electron transfer to facilitate the separation of photogenerated electrons and holes. In the peroxymonosulfate (PMS)/aerogels/visible light system, the SO 4 - , OH and 1 O 2 were generated, and 1 O 2 was the main reactive species. As a result, 99.9 % of Tetrabromobisphenol A (TBBPA) can be degraded and the total organic carbon (TOC) removal efficiency reached 81.8 % within 40 min in this system. The results might provide a new concept for the design of biomass aerogels for applications in organic pollutant removal.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Yang Wang,Shuaishuai Li,Chen Hou,Liming Jing,Rongkai Ren,Liweng Ma,Xu Wang,Jianzhi Wang
A biomass-based carbon fiber/metal–organic frameworks (MOFs/CF) electrode, with excellent electro-catalytic activity, was used for design the electro-Fenton (EF) process. The carbon fiber membrane (CF) was prepared from regenerated cotton fiber membrane through carbonization, and the MOFs were successfully introduced on the surface of the CF by the solvothermal method to obtain MOFs/CF electrode. Through the oxygen reduction reaction (ORR), the continuous on-site generation of H 2 O 2 was achieved over the MOFs/CF electrode. Moreover, the MOFs could efficiently catalyse H 2 O 2 to form hydroxyl radicals (•OH), which can degrade organic pollutants in the EF process. Excellent electrocatalytic performance was exhibited when the electrode was applied to degrade tetrabromobisphenol A (TBBPA). The total organic carbon removal efficiency for TBBPA reached 80% in 240 min, which demonstrated TBBPA was also rapidly mineralized by the constructed EF system.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2022
·
IF 8.91
Youru Yao,Li Yin,Cheng He,Jing Li,Chaloemporn Ponprasit,Yong Zhang,Xinying Cheng,Huan He,Shaogui Yang,Shiyin Li
The colloid of ferrous sulfide modified by humic acid (HA-n-FeS) shows good reduction and immobilization efficiency for variable-valence heavy metals in wastewater. The removal efficiency of HA-n-FeS for halogenated organic pollutants, however, remains unclear, especially in the absence and presence of oxygen. This study addressed this issue by exploring the effect and mechanism of dissolved oxygen on the degradation of tetrabromobisphenol A (TBBPA) by the HA-n-FeS colloid in water. The results showed that the removal efficiency of different concentrations of TBBPA (5,10, and 20 μm) by the HA-n-FeS colloid was 33.16%, 20.48%, and 22.37% in the absence of oxygen, respectively. When TBBPA reacted with the HA-n-FeS colloid, the concentration of Fe(II) and S(-II) remained stable. The adsorption of HA-n-FeS was the main mechanism of removing TBBPA in the absence of oxygen. In the presence of oxygen, the removal efficiency of TBBPA by the HA-n-FeS colloid was 82.37%, 56.80%, and 43.78% (for the above-mentioned TBBPA concentrations), respectively. In addition, the removal capacity of TBBPA by HA-n-FeS was 39.63, 52.21, and 89.75 mg/g, respectively. The concentration of Fe(II) and S(-II) decreased rapidly in time. Among them, the HA-n-FeS colloid removed part of the TBBPA through chemical adsorption . The main way of chemical adsorption was pore adsorption and functional group (olefin C C, phenolic hydroxyl group O–H, alcohol group C–O) combination. Besides, the HA-n-FeS colloid degraded part of the TBBPA into BPA through reduction, in which 17.72% of TBBPA was removed by the reduction of HA-n-FeS colloid. Fe(II) was the main contributor to the reductive degradation of TBBPA. Furthermore, active species ( 1 O 2 and •O 2 − ) played a minor role in the removal of TBBPA by the HA-n-FeS colloids with oxygen, where 13% of TBBPA was removed by 1 O 2 and •O 2 − . Therefore, in practical applications, the aeration method can be used to significantly improve the removal efficiency of TBBPA by HA-n-FeS colloids in water.
研究领域:
环境科学
·
水处理
·
污染物去除
·
胶体化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）