Boron vacancies of mesoporous MnO2 with strong acid sites, free Mn3+ species and macropore decoration for efficiently decontaminating organic and heavy metal pollutants in black-odorous waterbodies
文献类型： 外文期刊
作者： Liu, Yang 1 ; Niu, Ming-Shuang 1 ; Yi, Xianliang 1 ; Li, Geng 2 ; Zhou, Hao 1 ; Gao, Wei 1 ;
作者机构： 1.Dalian Univ Technol, Sch Ocean Sci & Technol, Minist Educ, Key Lab Ind Ecol & Environm Engn, Panjin 124221, Peoples R China
2.Chinese Acad Fishery Sci, Yingkou Enhancement & Expt Stn, Yingkou 115004, Peoples R China
关键词： Defect engineering; Boron vacancy; Manganese dioxide; Organic pollutant; Heavy metal
期刊名称：APPLIED SURFACE SCIENCE （ 影响因子：6.707； 五年影响因子：5.905 ）
ISSN： 0169-4332
年卷期： 2021 年 561 卷
页码：
收录情况： SCI
摘要： Oxygen vacancy (OV), one frequently designed structural anion defect, can transport active oxygen species towards multi-phase pollutant oxidation by activating oxygen molecules or chemical oxidants. However, dissolved oxygen (DO), a desirable oxidant source for water organics degradation, is very difficult to be directly utilized by OV-abundant metal oxides without extra heat or light input. To solve this problem, in this study another anion defect, i.e., boron vacancy (BV), was successfully incorporated into alpha-MnO2 via a two-step method, i.e., thermal NaBH4 treatment for boron doping followed by in situ wash-away of boron during organic dye elimination process. The NaBH4-modified alpha-MnO2 exhibited much higher Rhodamine B (RhB) elimination than the original one. BV is capable of transforming DO into O-1(2), center dot OH and O-2(center dot-) radicals at 30 degrees C and without extra energy input, completely mineralizing RhB into inorganic carbon. Besides, NaBH4-induced strong acid sites, free Mn3+ species and large pore size contributed to adsorptive RhB removal. For the original alpha-MnO2, surface lattice oxygen was the key oxidant for dye degradation. Malachite Green, Congo Red, Orange I and Methyl Blue were further tested as target substrates. The NaBH4-treated alpha-MnO2 presented superiority over the pristine sample in adsorptive Pb2+ removal as well.
- 相关文献
作者其他论文 更多>>
-
Structure dependence of the enhanced sulfur tolerance of core-shell CoMn oxides for benzene oxidation: Discrepant sulfur species and less affected reactant activation
作者：Liu, Yang;Cheng, Lin;Zhang, Di;Zhan, Jingjing;Shan, Jiajia;Zhou, Hao;Yi, Xianliang;Li, Zhonghong;Shen, Xudong
关键词：VOCs; Catalytic oxidation; Manganese oxide; Cobalt decoration; Sulfur resistance
-
Copy Number Variations in Short Tandem Repeats Modulate Growth Traits in Penaeid Shrimp Through Neighboring Gene Regulation
作者：Zhou, Hao;Qiang, Guangfeng;Xia, Yan;Tan, Jian;Fu, Qiang;Luo, Kun;Meng, Xianhong;Chen, Baolong;Chen, Meijia;Sui, Juan;Dai, Ping;Li, Xupeng;Liu, Mianyu;Kong, Jie;Luan, Sheng;Zhou, Hao;Qiang, Guangfeng;Xia, Yan;Tan, Jian;Fu, Qiang;Luo, Kun;Meng, Xianhong;Chen, Baolong;Chen, Meijia;Sui, Juan;Dai, Ping;Li, Xupeng;Liu, Mianyu;Kong, Jie;Luan, Sheng;Xing, Qun
关键词：short tandem repeats; STR; growth trait; penaeid shrimp; molecular breeding
-
Single atom Z-scheme heterostructure catalysts of photosensitive metal-organic nanorings and graphite-C3N4 for visible light-driven hydrogen production
作者：Hou, Chao-Ping;Liu, Yang;Liu, Jia-Xin;Li, Xin-Ao;Liang, Zi-Zhan;Liu, Jun-Min;Hou, Chao-Ping;Tan, Li-Lin
关键词：Metal-organic nanoring; Z-scheme heterojunction; Single-atom catalyst; Photocatalytic hydrogen evolution
-
Spatial-temporal distribution of phytoplankton HAB species and contamination status of oyster toxins under intensive oyster farming in Jiangmen coasts, the South China Sea
作者：Zou, Jian;Xiao, Yayuan;Su, Jiaqi;Wu, Peng;Wang, Teng;Lin, Lin;Li, Chunhou;Liu, Yu;Liu, Yong;Zou, Jian;Xiao, Yayuan;Wu, Peng;Wang, Teng;Liu, Yong;Liu, Yang;Wang, Teng;Liu, Yu;Liu, Yong
关键词：HAB species of phytoplankton; Alexandrium pacificum; Paralytic shellfish poisoning; Diarrhetic shellfish poisoning; Jiangmen oyster farming area
-
Increases in forest carbon stocks of up to 32% by 2100 across the subalpine forests of the Tibetan Plateau
作者：Li, Ting;Wang, Huan;Wang, Jicheng;Li, Xiaorui;Wang, Qi;Wang, Qi;Liao, Zhanmang;Luo, Peng;Luo, Peng;Lai, Changhong;Liu, Yang;Jian, Yi
关键词：Climate velocity; Forest recovery; Growth; Mortality; Mountain forests; Stand age
-
Chromosome-level genome assembly of flathead asp (Pseudaspius leptocephalus)
作者：Gong, Xiong;Geng, Longwu;Gong, Xiong;Geng, Longwu;Gong, Xiong;Ding, Zufa;Wang, Cheng;Qian, Yuting;Chen, Wenjun;Yu, Dan;Liu, Yang;Zheng, Lingling;Yang, Liandong;Gong, Xiong;Chen, Wenjun;Liu, Yang;Zheng, Lingling;Ding, Zufa;Jiang, Haifeng
关键词：
-
Osmoregulation and Physiological Response of Largemouth Bass (Micropterus salmoides) Juvenile to Different Salinity Stresses
作者：Liu, Yang;Tian, Jing;Song, Hongmei;Zhu, Tao;Lei, Caixia;Du, Jinxing;Li, Shengjie;Liu, Yang
关键词：largemouth bass; salinity; osmoregulation; antioxidant enzymes; tissue damage
