Morphology-tunable tellurium nanomaterials produced by the tellurite-reducing bacterium Lysinibacillus sp ZYM-1

Wang, Zhiwei1; Bu, Yibin2; Zhao, Yonghe1; Zhang, Zuotai2; Liu, Lifen1; Zhou, Hao1

2018-07

10.1007/s11356-018-2257-y

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH   影响因子和分区

0944-1344

1614-7499

Although tellurite is highly toxic to organisms, elemental tellurium nanomaterials (TeNMs) have many uses. The microbe-mediated reduction of tellurite to Te(0) has been shown to be a green and cost-effective approach for turning waste into wealth. However, it is difficult to tune the morphology of biogenic nanomaterials. In this study, a series of experiments was conducted to investigate the factors influencing tellurite reduction by the tellurite-reducing bacterium Lysinibacillus sp. ZYM-1, including pH, tellurite concentration, temperature, and heavy metal ions. The optimal removal efficiency of tellurite was respectively achieved at pH 8, 0.5 mM tellurite, and 40 A degrees C. All of the tested metal ions retarded the reduction of tellurite, especially Cd2+ and Co2+, which completely inhibited its reduction. Further characterization of the biogenic TeNMs indicated that their morphology could be tuned by the tellurite concentration, pH, temperature, and organic solvents used. Regular Te nanosheets were produced using 5 mM tellurite. The TeNMs were primarily synthesized in the cell membrane. Hexagonal Te nanoplates, nanorods, nanoflowers, and nanobranches were synthesized when combining membrane fractions with tellurite and NADH. The diverse morphologies are assumed to be induced by the synergy between the reduction kinetics and the protein structure. Therefore, this study confirmed that the bacterium can tune the morphology of TeNMs, broadening the potential application of biogenic TeNMs.

Bacterial tellurite reduction Lysinibacillus sp. Biogenic tellurium nanoparticles Biogenically tailored nanomaterials Tellurite reductases

SCI

英语

其他

Fundamental Research Funds for the Central Universities[DUT17JC46]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000438830900047

SPRINGER HEIDELBERG

ENVIRONMENT/ECOLOGY

Web of Science

1.Dalian Univ Technol, Sch Food & Environm, Minist Educ, Key Lab Ind Ecol & Environm Engn, Panjin, Peoples R China
2.Southern Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Wang, Zhiwei,Bu, Yibin,Zhao, Yonghe,et al. Morphology-tunable tellurium nanomaterials produced by the tellurite-reducing bacterium Lysinibacillus sp ZYM-1[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(21):20756-20768.

Wang, Zhiwei,Bu, Yibin,Zhao, Yonghe,Zhang, Zuotai,Liu, Lifen,&Zhou, Hao.(2018).Morphology-tunable tellurium nanomaterials produced by the tellurite-reducing bacterium Lysinibacillus sp ZYM-1.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(21),20756-20768.

Wang, Zhiwei,et al."Morphology-tunable tellurium nanomaterials produced by the tellurite-reducing bacterium Lysinibacillus sp ZYM-1".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.21(2018):20756-20768.